Choke shotgun markings

Factory Choke Identification Codes. AMERICAN TACTICAL IMPORTS. BERETTA. BENELLI/FRANCHI/STOEGER. REMINGTON SPARTAN (SPR) NOTCH CODES. BROWNING INVECTOR/INVECTOR PLUS NOTCH CODES. BERNADELLI FLUSH NOTCH CODES. LANBER FLUSH NOTCH CODES. MOSSBERG SILVER AND ONYX RESERVE (INTERNATIONAL) FLUSH NOTCH CODES.

Choke shotgun markings. Choke sizesare classified by both their measurement (to a thousandth of an inch) and by a special naming system. Choke measurements range from open chokes of around 0.725″ to 0.770″, to more restrictive chokes of around 0.600″ to 0.680″.

Aug 30, 2008 ... Choke, Notches. Cylinder, /////. Skeet, /////. Improved Cylinder, ////. Modified, ///. Improved Modified, //. Full, /. Then there's the ...

Location: Northwest PA. I know that Ithaca flues were marked as follows. '0' is cylinder bore. '1' is improved cylinder. '2' is modified. '3' is improved modified. '4' is full choke." One of my barrels is definitely a 4 (Full). I'm not certain of the other.Mark’s Work Warehouse is a popular destination for individuals in search of high-quality workwear and accessories. With a wide range of products available, it can sometimes be over...1. Shotgun Choke Comparison. 2. Why listen to us? 3. Shotgun Choke Reviews. 4. Shotgun Chokes Through The Years. 5. Why Use a Shotgun Choke? 6. Shotgun Choke Chart. 7. Choke Types. 8. Benefits. 9. Essential Considerations. 10. Impact of Chokes on Patterning. 11.Deciphering Auto 5 metric choke markings. I recently acquired a 16 ga. pre-War Auto 5 with a serial number in the 51,000 range. It does not appear to have the asterisk-style choke markings, but on the underside of the barrel it is marked as shown. I am assuming that this might represent a choke with a 0.1 mm constriction (16.9/17.0 mm).Hello, i came to this forum to get some help determining the type of chokes on my shotgun, its a Acciao Breda B4 oxu, old shotgun, the markings on my Left (upper) barrel is 18.4 and on the Right (lower) is 18.3, im pretty lost on how to calculate the choke type, if anyone could help me know more about my shotgun not only choke type if full, improved cylinder, modified, etc.Regular cleaning and inspection of your choke tubes are crucial for optimal performance and longevity. Here are the steps to follow: Clean and grease your choke tube at least twice annually using a soft cloth and a light lubricant, such as gun oil. Inspect the choke tube for any signs of wear or damage.

There are several ways to find out more information about your Winchester rifle or shotgun. All Winchester firearms, including commemoratives, are collectible. Read on to find out ...ATA shotguns typically use interchangeable chokes with varying degrees of constriction to effectively control the spread of the shot pattern. These chokes include but are not limited to full, improved modified, modified, improved cylinder, and cylinder. Contents [ show] To do this, you need a large piece of paper or cardboard placed at 40 yards. Draw a central aiming point and shoot at it from that distance. Find the center of the pattern on the target and draw a 30 inch circle. I do this by attaching a 15” string to a sharpie and holding the other end in the center of the pattern. These choke diagrams compare similar choke systems for different brands and highlight key features in order to identify which choke you have. Choke design, thread location, thread count, and other key identifying features are all listed to make for rapid identification. Standard Invector vs Invector Plus. Invector Plus vs Invector DS. 1. Gauge. The gauge marking on a Tristar choke tube indicates the shotgun gauge for which it is designed. Tristar choke tubes are available for various gauges, including 12, 20, 28, and .410 bore. It is essential to match the gauge of your shotgun with the corresponding choke tube for proper fit and function. 2.

Apr 19, 2017 ... Brownells Gun Tech Steve Ostrem fills us in on some of the very basics of Shotgun Choke tubes. He covers the applications of different chokes ...Gunsmithing. Briley Showroom. Mattarelli USA. Briley 3Gun. Premium European to American Markings Choke Charts which are manufactured to be the best in market with the highest quality shotgun, firearm, and rifle standards. Shop now for European to American Markings at Briley, A Legacy of Shooting Innovation.The choke tube table above shows the diameters and constrictions you can expect for choke tubes and shotgun barrels for Stoeger 12-gauge shotguns compared to common fixed choke shotgun gauges. Stoeger shotguns have two different choke systems. Some models are compatible with Beretta/Benelli Mobil style threads, while …A Benelli choke tube with 3 lines (III) is a modified choke. Beretta shotguns that use Mobil chokes will also show 3 lines to indicate modified. Browning choke tube markings are slightly different, and 3 lines means Improved Cylinder Lead or Modified Steel. The line markings on a choke tube can be found etched into the top edge of the …

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The Europeans, just to be different, have a system of using asterisks or punch marks, starting with * for full choke, ** for ¾, *** for ½, **** for ¼ and CL for cylinder.A small batch, high-end shotgun. Hand polished receiver with custom engraving and 24k gold inlays and exhibition walnut. Available in 12 and 20ga., 3" chambering. ... Choke Tube Identification. Choke tubes can be identified by the number and placement of small notches found on their muzzle (non- threaded) ends. O: Extra Full: I: Full: II:Choke tubes help sharpen your shotgun’s accuracy when hunting game and offer a myriad of benefits for hunters. Among the top remains the fact that chokes give you the ability to turn a single shotgun into a tool capable of specializing in many types of game hunting.Sep 21, 2009 · Choke markings; 15.7 is the metric bore size. The 15.3 and 15.1 are the muzzle measurements. 15.7 divided by 254=.618 which is very close to normal bore size for a 20. 15.3 divided by 254=602: difference of .015=mod. choke. 15.1 divided by 254=.594: difference to bore; .024=full choke. over the hill and picking up speed. I've found that some of the choke markings are not always accurate on my Uggie. Do yourself a favor and get a $40 gauge measuring tool from Midway or Brownels. I have a 12 gauge that was supposed to be IC / M. But when i measured it was more like M /M . Well, you might be surprised when you pattern it. Choke markings on Spanish guns …Degree of choke, in this case 0.7mm constriction CHOKE 17.0 1924-> Liege Choke constriction, together with barrel dimension this can give a brief view of the choke. 1898 - 1924 Liege Mark for optional superior provisional proof. The mark was seldom requested 1892-1924 Liege Chamber dimensions in millimeters shotguns undergoing …

Here we present a brief introduction to Beretta Choke Tubes Families and markings. Every shotgun has a different type (Family) of barrels, and every barrel is only compatible with chokes made specifically for its Family. The main Families are four: Mobilechoke, Optima-Choke, Optima-Choke Plus, or Optima-Choke HP.barrels. Choke designation indicates the dispersion pattern characteristics of the shotgun bore. The chart on the following page provides identification for choke and a pattern percentage within a 30 inch circle at specified ranges. Identification Description Percentage Distance 1/1 Full Choke 7 0 - 75 3 5mWe would like to show you a description here but the site won’t allow us.ATA shotguns typically use interchangeable chokes with varying degrees of constriction to effectively control the spread of the shot pattern. These chokes include but are not limited to full, improved modified, modified, improved cylinder, and cylinder. Contents [ …larryvaughn Discussion starter. 3 posts · Joined 2013. #1 · Jan 29, 2013. My new A71 came with 5 chokes and nary a word about how to identify them. Are the notches the same as Beretta; ie, 1notch=Full, 2=Improved modified, 3= Modified, 4=Improved cylinder, and 5= Cylinder? Old dog trying to learn new tricks.Shotgun choke markings can be identified using 5 simple methods. They include referencing a sizing chart to find the correct choke, counting the lines or notches, observing dots or circles on the choke, locating writing on the side wall, and using bore sizing tools to measure the diameter.Choke. The choke is the constriction of. Identifying Ithaca Double Barrel Shotguns by Manufacturer’s Markings. Ithaca double barrel shotguns are manufactured by Ithaca Gun Company, a company that has been in business since 1883. Ithaca shotguns are known for their quality construction and dependability. ... How to read Ithaca double barrel ... A shotgun barrel’s choke will be located at the muzzle end of the barrel and you will encounter them in two different designs. The oldest way is called a “fixed choke.”. Many side-by-side and older single barrels will have fixed chokes, meaning that their barrels have the choke constriction built-in to the end of the barrel at the muzzle end. Choke tube markings are a series of lines, notches, letters, ... Modified diameters differ based on shotgun brand and choke system. Below is a chart showing the diameter of M chokes by brand. Type: M Diameter (inch) Beretta/Benelli Mobil: 0.701: Benelli Crio: 0.702: Beretta Optima Plus:Hopkins & Allen Manufacturing Co. was in business 1868-1898 and produced falling block single barrel shotguns. The enterprise became Hopkins & Allen Arms Co. 1898-1914 and introduced "tip-up" single barrel shotguns in 1902 after acquiring Forehand Arms; with a distinctive barrel take down lever and drop point receiver.The easiest way to differentiate between Benelli choke tubes is by looking at the markings on the tube itself. The markings will indicate the constriction of the tube, with different markings denoting different choke sizes. ... Most Benelli shotguns come with at least one choke tube included, but it is best to check with the specific model and ...Tristar chokes can be identified by the unique markings or engravings on the choke tubes themselves, which often include the brand name or logo, as well as the constriction size or designation. Some Tristar chokes may also have color-coded bands for easy identification. See 3,000+ New Gun Deals HERE. 1. What markings should I look for on ...

I can find no other markings on the gun other than a "G" and "35" stamped on the bottom of the barrel where it is covered by the receiver when the gun is assembled, and also a "G" and "35" stamped on the inside of the receiver where it is covered by the barrel when the gun is assembled. There is no other serial number or choke marking on the gun.

The fixed-choke barrel on this old Winchester shotgun is clearly marked as having a Full constriction. Most modern shotguns of all styles now come with what are known as “interchangeable chokes.” These are short tubes of metal tighter in diameter than the shotgun’s barrel.A Benelli choke tube with 3 lines (III) is a modified choke. Beretta shotguns that use Mobil chokes will also show 3 lines to indicate modified. Browning choke tube markings are slightly different, and 3 lines means Improved Cylinder Lead or Modified Steel. The line markings on a choke tube can be found etched into the top edge of the …While the focus of shotgunning falls on the firearm itself, without a basic understanding of chokes, shooters and hunters can end up sorely disappointed. Wha...Virginian. 14840 posts · Joined 2008. #2 · Oct 6, 2018. The choke is normally stamped on the left outside of the barrel a short distance in front of the receiver. You used to be able to special order any combination of regular features for very little cost. Of course you can always measure the bore and the constriction as well.A shotgun choke modifies how shot leaves the barrel, and therefore how it travels through the air. By picking the right choke, you can increase your chances of hitting a target. For a close proximity target a wider spread of shot is ideal, whereas at distance a tighter shot pattern is preferable. Close, moving targets require a more rapid response.Browning BSS 20ga chote markings. I have a 20 ga 26" tubes,fixed chokes, where are the choke markings on the barrel. I am use to the old system of stars and dashes. This is a BSS and the only thing I see under the forearm is a 3 on one barrel and a 5 on the other. Any help would be appreciated.A shotgun barrel’s choke will be located at the muzzle end of the barrel and you will encounter them in two different designs. The oldest way is called a “fixed choke.”. Many side-by-side and older single barrels will have fixed chokes, meaning that their barrels have the choke constriction built-in to the end of the barrel at the muzzle end.The three major parts of a shotgun are the stock, action and barrel. Other parts that may be found on a shotgun include the trigger guard, safety mechanism, magazine, sight and for...

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Members. 201. Posted October 8, 2008. birdhunter48 said: Does anybody know how to tell what choke tubes I would have for my Stoeger Condor Field Combo 12 & 20 gauge. I can't find any markings or writing on them in order to figure it out. All I can assume is that it came with all Modified Tubes ????????????????????Choke tube markings are a series of lines, notches, letters, ... Skeet diameters differ based on shotgun brand and choke system. Below is a chart showing the diameter of SK chokes by brand. Type: SK Diameter (inch) Beretta/Benelli Mobil: 0.721: Benelli Crio: 0.722: Beretta Optima Plus:6534 posts · Joined 2013. #9 · Jan 5, 2021. And just to note, before someone states the above specs are SAAMI and "do not apply" to a gun manufactured in either Belgium or Japan, where CIP reigns, the CIP specs for a 12-gauge barrel are 18.2mm+0.7mm, so 18.2-18.9mm. Which, math says are 0.71653" to 0.7440944".To easily identify Beretta choke tubes, look for the distinctive “PB” or “Steel Proof” markings on the tubes. These markings indicate that the choke tubes are manufactured by Beretta. See 3,000+ New Gun Deals HERE.How to identify the right Choke Tube for your gun: Identification Methods. 1) Visual Method. 2) Choke Measurement Method. 3) Barrel Markings Method. 4) Serial Number Method. Choke Tube Constrictions chart. How can I identify which screw in choke tubes I should use in my Beretta shotgun: Mobilechoke, Optima-Choke, Optima-Choke Plus, or Optima ...Choke markings for sxs Ithaca. Need my memory refreshed. over the hill and picking up speed. "I ask sir, what is the militia? It is the whole people...to disarm the people is the best and most effectual way to enslave them.".. founding father George Mason.Check the barrel markings: The easiest way to tell what choke is in your shotgun is to check the barrel markings. The choke markings are usually located on the side of the barrel near the muzzle. The markings will indicate what type of choke is in the barrel, such as “CYL” for cylinder, “IC” for improved cylinder, “M” for modified ...A choke tube wrench can be used to identify Stoeger chokes by removing the choke tube and inspecting the markings on the tube itself. 10. Do all Stoeger shotguns come with choke tubes? Some Stoeger shotguns come with choke tubes included, while others may require the purchase of compatible choke tubes separately. 11.Jan 23, 2023 · Arikara. Correct. For a while in the Flues era Ithaca marked the chokes as a fraction -- 1/4. 2/4, 3/4 & 4/4. Mine is marked 2 on the right tube and 4 on the left. Pretty much standard choke selections for general hunting purposes. Thanks for the photo. your gun is apparently older than mine. My sn begins with 372XXX. Mar 31, 2019 ... Hello, I need some help with a Savage 720 U.S. Military shotgun. I have a 720 Aerial training shotgun and it has **** asterisks on the ...Invector choke tubes are a standard for early model Browning shotguns, but they also fit certain Winchester and Mossbergshotguns. Invector threads are located at the bottom of the choke and are 1.5-inches long. Standard Invector chokes fit the following shotguns: Winchester Invector. Fits Winchester 1200, 1300, 1400, 1500, & Ranger … ….

The purpose of a choke in a shotgun is to change the pattern of the shot, making it either more open or more tight. This allows a shooter to adjust the spread of the shot to better suit the specific hunting or shooting situation. A tighter choke will produce a smaller, denser pattern of shot, making it ideal for long-range shots at small ...May 18, 2019 ... ... choke and shot shell might be a little confusing. In this episode of Backcountry College, Clay Hayes explains how different shotgun chokes ...The purpose of a choke in a shotgun is to change the pattern of the shot, making it either more open or more tight. This allows a shooter to adjust the spread of the shot to better suit the specific hunting or shooting situation. A tighter choke will produce a smaller, denser pattern of shot, making it ideal for long-range shots at small ...In today’s fast-paced digital world, live streaming has become a popular and effective way for individuals and businesses to connect with their audience in real-time. One such live...Feb 20, 2024 · A choke tube wrench can be used to identify Stoeger chokes by removing the choke tube and inspecting the markings on the tube itself. 10. Do all Stoeger shotguns come with choke tubes? Some Stoeger shotguns come with choke tubes included, while others may require the purchase of compatible choke tubes separately. 11. A Benelli choke tube with 3 lines (III) is a modified choke. Beretta shotguns that use Mobil chokes will also show 3 lines to indicate modified. Browning choke tube markings are slightly different, and 3 lines means Improved Cylinder Lead or Modified Steel. The line markings on a choke tube can be found etched into the top edge of the …Choke markings; 15.7 is the metric bore size. The 15.3 and 15.1 are the muzzle measurements. 15.7 divided by 254=.618 which is very close to normal bore size for a 20. 15.3 divided by 254=602: difference of .015=mod. choke. 15.1 divided by 254=.594: difference to bore; .024=full choke. over the hill and picking up speed.Home. Shotgun choke chart by type, use and distance. Shotgun Choke Chart. From novice shooters to seasoned hunters, chokes are a critical component to getting the best out of your shotgun. Shotgun chokes are interchangeable tubes, installed at the end of a shotgun’s barrel that shape or narrow the shot pattern. Choke shotgun markings, The practical range is from 10 to 25 yards for lead and 15 to 30 yards for steel. Depending on things like manufacturer and age, an IC shotgun choke for a 12-gauge can range from 0.009 to 0.010 inches. This variation happens in three chokes related to the 12-gauge, as you will see in the skeet II and modified chokes., February 17, 2024 by Wayne Fletcher. Mossberg choke tubes are identifiable by their unique color-coded bands on the tube end. Each color signifies a different choke constriction, which determines the spread and pattern of the shot. The wide range of colors makes it easier for shooters to select the right choke for their needs., That is what the old Charles Daly I used to have was marked and that is what it was. You lie to the Government, it's a Felony, they lie to you, it's Politics! You are right. I have a Daly Miroku and it was choked Imp Mod (+-) and Mod (++) before Mike Orlen added tubes. I suspect that ++- is light modified., Feb 18, 2010 · 14040 posts · Joined 2009. #3 · Feb 22, 2010. When I figured out the markings, I wrapped the end of each extended tape with masking tape and wrote on the tape with a magic marker the choke size. Works for me, and I don't have to wear my reading glasses in the field. "We pulled the trigger, the safety went forward, both barrels fired almost ... , May 30, 2023 · The second shotgun choke that worked really well in the field – in that it was effective and forgiving in use – was a standard Beretta Improved Cylinder Mobilchoke tube. This is a conventional shotgun choke with about five thou of constriction. With the duffer’s gun, I once accounted for 18 average pheasants for 17 shots. , Anyway, the "Record" shotguns shown in the catalogs were made by the company Scholberg & Delheid, owner of the trademark "Record" and owner of the trademark "S & D". ... Have yet to get SxS's down. Chokes are per barrel markings, .025" and .040", when I did manage to get on the birds, they dusted. I'll probably open them …, Factory Choke Identification Codes. AMERICAN TACTICAL IMPORTS. BERETTA. BENELLI/FRANCHI/STOEGER. REMINGTON SPARTAN (SPR) NOTCH CODES. BROWNING …, To do this, shoot off a rest at a center mark in a 30-inch circle at 40 yards. Full choke should put 70 percent of the shot in the circle, modified 60 percent, improved cylinder 45 percent. Cylinder, or no choke at all, should shoot from 25 to 35 percent. With interchangeable choke tubes, a hunter can use the., Sep 16, 2012 · Huglu fixed choke markings. Looking at an older fixed choke TR Import gun for my wife at a local shop. Choke markings are 1 circle and 2 circles. Just wondering what they constriction that relates too? Wish I could help you, you will have to wait for 2few, or Riflemeister to help you out. , Purchasing a shotgun in California does not require any special license or permit in most cases. The person purchasing the gun must be at least 18 years of age and not have a felon..., Here we present a brief introduction to Beretta Choke Tubes Families and markings. Every shotgun has a different type (Family) of barrels, and every barrel is only compatible with chokes made specifically for its Family. The main Families are four: Mobilechoke, Optima-Choke, Optima-Choke Plus, or Optima-Choke HP., The fractions represent the degree of choke with respect to Full. For example, Full choke is the same in both worlds. That which we call Improved Modified is 3/4 choke. Modified is 1/2 choke and IC is 1/4 choke. Going back a few decades, a Full choke for a 12 ga was .040 inch, IM was .030, M was .020 and IC was .010. So, 40/40 = 1 or full., (RTTNews) - Today's Daily Dose brings you news about FDA's refusal to approve Aradigm's Linhaliq in its present form; Abeona's progress in its cli... (RTTNews) - Today's Daily Dose..., Aug 7, 2008 · The chokes in an L.C. Smith run parrallel for 1" and then taper 1 9/16" to bore size of .729-.732 in 12 ga. Also your gun was made in 1908, and after 1913 the 0 grade became Ideal Grade. The markings on the barrels are probably the barrel makers mark as the 0 grade had London Steel barrels or Damascus steel, I think Chain Damascus. , Neither open nor tight. This is the do-all choke. Improved Cylinder (IC): This moves to the more open end of patterns. It can be used for closer range clays, bird hunting at close range, and is ..., 14040 posts · Joined 2009. #3 · Feb 22, 2010. When I figured out the markings, I wrapped the end of each extended tape with masking tape and wrote on the tape with a magic marker the choke size. Works for me, and I don't have to wear my reading glasses in the field. "We pulled the trigger, the safety went forward, both barrels fired almost ..., If you’re a fan of Christian comedy and music, then you won’t want to miss the opportunity to see Mark Lowry live. With his unique blend of humor, storytelling, and heartfelt songs..., S. soreshoulder. 328 posts · Joined 2003. #2 · Nov 11, 2003. My Fox Model B had neither choke markings or a serial number, for that matter. Your gun is probably choked Modified-Full, although it could be Improved Cylinder-Modified. Take it to a smith...he'll have the gauges to make the determination., The tighter the choke the heavier the radial forces, the tighter the pellets are squeezed together so the pattern holds tighter over a longer distance. Conversely, the less restriction you have in the shotgun choke the more loosely the pellets are held together and the faster the pattern opens up. There you have it! , A choke is simply a tapered constriction of the gun barrel’s bore at the muzzle end. The exit end of the choke is smaller by some dimension than the actual bore of the barrel. This difference is the amount of constriction. For example if the bore of the barrel is .730 and the exit dia of the choke is .710 you have a constriction of .020., Choke tubes help sharpen your shotgun’s accuracy when hunting game and offer a myriad of benefits for hunters. Among the top remains the fact that chokes give you the ability to turn a single shotgun into a tool capable of specializing in many types of game hunting., While the focus of shotgunning falls on the firearm itself, without a basic understanding of chokes, shooters and hunters can end up sorely disappointed. Wha..., 8968 posts · Joined 2005. #1 · Mar 28, 2006. Beretta currently uses (or recently has used) 3 different choke tube types on different models of shotguns. They can be identified by the image below. Note that all the tubes pictured here are flush tubes. There are several styles of extended tubes with different styles of extension, but the part ..., There are a variety of choke sizes that restrict a shotgun’s bore to a greater or lesser degree. “Cylinder” chokes don’t constrict the bore diameter at all. “Full” chokes constrict the bore by about .035 inches. Between cylinder and full, “improved cylinder” chokes constrict the bore about .010 inches, “modified” constrict ..., Most TriStar Shotguns use the Beretta®/Benelli® Mobil Style choke tubes. You can purchase extra choke tubes through our Service Department by calling (816) 421-1400 . Can I shoot both 2 3/4 and 3 shells if my barrel is stamped 3?, Sep 21, 2009 · Choke markings; 15.7 is the metric bore size. The 15.3 and 15.1 are the muzzle measurements. 15.7 divided by 254=.618 which is very close to normal bore size for a 20. 15.3 divided by 254=602: difference of .015=mod. choke. 15.1 divided by 254=.594: difference to bore; .024=full choke. over the hill and picking up speed. , May 30, 2023. 0 shares. Shotgun choke can be a daunting subject, but can make all the difference to your shooting, so it's well worth following The Field's definitive guide. Learn exactly what shotgun choke is, what it does, how it affects your shooting and which you should be using., Fountain. Those markings, in connection with Model 21s, have nothing whatsoever to do with screw in chokes. Winchester Model 21s were never built with screw in chokes. The WS-1/WS-2 fixed choke designation refers to "Skeet1" and Skeet 2," which are constrictions designed to produce optimum patterns at ranges of 20 yards and 30 …, R. robert146 Discussion starter. 1114 posts · Joined 2009. #1 · Aug 29, 2009. Just acquired a well used Lefever Nitro special made in 1929 according to serial number. 12 ga., 30" barrels. Don't know how it is choked. Right barrel stamped with number "2" and left barrel "4". I figure it is probably modified and full, but wondering if anyone ..., Feb 20, 2024 · Tristar chokes can be identified by the unique markings or engravings on the choke tubes themselves, which often include the brand name or logo, as well as the constriction size or designation. Some Tristar chokes may also have color-coded bands for easy identification. See 3,000+ New Gun Deals HERE. 1. What markings should I look for on ... , Jun 26, 2014 · Browning BSS 20ga chote markings. I have a 20 ga 26" tubes,fixed chokes, where are the choke markings on the barrel. I am use to the old system of stars and dashes. This is a BSS and the only thing I see under the forearm is a 3 on one barrel and a 5 on the other. Any help would be appreciated. , That is what the old Charles Daly I used to have was marked and that is what it was. You lie to the Government, it's a Felony, they lie to you, it's Politics! You are right. I have a Daly Miroku and it was choked Imp Mod (+-) and Mod (++) before Mike Orlen added tubes. I suspect that ++- is light modified., Key Takeaways: Patterning the shotgun is the most accurate method to measure shotgun choke size. Markings on the barrels or choke tubes may provide some information but may not be as precise. By analyzing the spread of the shot on a pattern plate, you can determine the level of choke constriction.