A lot of new gun owners get confused when deciding whether or not to use an improved cylinder choke or a regular cylinder choke in their shotgun bore. What is police cylinder on smith and wesson model 3000. If you want a universal short barrel, send it to carlsons and have them cut it to 18 or 20 and add interchangable choke tubes. Cylinder choke is going to be way too wide open for clays waterfowl. Before i go load up on a bunch of turkey loads and try to pattern them, am i. If the the pattern spread either the 75% spread figure from shotguninsight or the traditional pattern efficiency of the gun and shell combination is known at the break distance, then this combined with the shooters average can be used to estimate just how much variation the shooter exhibits when placing the shot.
Now, with the 18 inch cylinder bore the 00 buckshot spread is 15. Shotgun analyzer will perform a pattern analysis when used with turbotargets. Sep 21, 2015 shotgun patterning and pattern analysis. Obviously some sighting systems work better than others. The other way to tighten choke would be to just use a larger shot load. Made of premium steel, maximize the cylinder honing tool with. How much effective range for a true cylinder bore shotgun. As i understand it, choke constriction is something measured relative to bore diameter.
The bore sizes of other common shotgun gauges are as follows. A full choke will have a tighterdenser pattern at 30yrds than a cylinder bore will. As the pellets travel farther from the firearms muzzle, the pattern widens. Experts notwithstanding, i find it to be effective and useful within its limitations. Firstly, although in general terms, all chokes above cylinder give a pattern percentage greater than cylinder, increasing choke thereafter frequently does not give burrards closer or more concentrated pattern, as we have seen. Feb 26, 2010 i am thinking about trying turkey hunting this year, but i dont have a hunting shotgun. Again, not much difference in pattern size, but interestingly enough, the tighter choke in the 870 actually had a larger pattern than the open choke gun on top. A shotgunshooters guide to interchangeable choke tubes.
My current 590 patterns at 45 yards with buck and 100 with a slug. Shotgun barrels have a choke to control the spread or shot pattern. Apr 20, 2010 best choke for tactical shotgun, best tactical shotgun choke, best tactical shotgun chokes, get tight patterns from cylinder bore shotgun, how tight is birdshot in a remington 870 tactical shoot, rem choke tactical versus improved cylinder, remington 870 tactical choke, tactical choke tube for 870 express, tactical choke vs improved, tactical. Richard atkins gets to grips with the unsung hero of modern shotgun design. To get results that are accurate and shareable, you need a couple of basic things. Understanding shotgun chokes nssf lets go shooting.
The only way to answer your question with certainty about a 60% cylinder pattern versus a 60% modified pattern would be to do a bunch of patterns and have concentric 10 and 20 circles inside. I keep hearing differing opinions online so i wanted a familiar communities take on this. May, 20 turkey hunting with a cyinder bore, improved cylinder 18. After purchasing the software you will recieve an email with the necessary password for your application. Although i have several shotguns, im not a shotgun person. Shotgun chokes explained cylinder, improved cylinder. Of course its safety depends on the operator using his brain and not putting his hand in front of the bore while adjusting it midhunt. Shotgun sports pattern analysis for busy sportsmen by. Not restricted at the muzzle it has a cylinder bore because the mossberg 18 shotgun was designed to be for defense. The single best way to see shotshell patterns other than shooting them yourself this pattern app is based off actual winchester factory.
Choke constrictions in thousandths of an inch smaller than the saami bore of. A shotgun barrel with cylinder choke actually has no constriction at all. A 30 cylinder bore would pattern just about the same as an 18 cylinder bore. May 25, 2008 the choke determines the diameter of the shot pattern at a given distance. Most le and tacticaldefense oriented shotguns are smooth bore with a cylinder or improved cylinder choke. The internets best resource for shotgun information. The question i am going to try to answer in this article is what the. That turns out to be 35 yards for a modified choke, 30 yards for an improved cylinder ic, and 25 yards for a skeetcylinder choke. Patterning is a simple process, but time consuming due to all the counting required. I shoot clays and quail with an 18 barrel cylinder bore 12 ga. Technically, a cylinder bore will put 40 percent of its pattern in a 30inch circle at 40 yards.
This is a photo found on the net of a shotgun like mine, a mossberg 385 with adjustable choke, 20 ga. Federal flite control wads are great for this since they keep patterns from forming a donut shape. Luckily mossberg 500 barrels with replaceable chokes are available and relatively cheap. A lot of choke is built into the wads and loads of a shotgun these days, such as the federal flitecontrol wad. Shotgun patterns are measured at 40 yards for all gauges, except. I am thinking about getting a mossberg 590 14 inch 5 shot pump shotgun. How much will a fixed cylinder bore choke limit me. An improved cylinder is most effective from 20 to 35 yards. Patterning at this shorter distance, most shooters will be using the choke that theyll be using for target shooting or hunting. And in many tactical shotgun classes it is pretty standard you shoot out to 50100 yards with slugs. What shotguns pattern the worst out of the box, what shotguns pattern the best, and how much of a difference is there, really. As a very rough rule of thumb, the following all produce exactly the same pattern and pattern size at the particular distance.
I do have a tactical shotgun that i can plug to meet the 3 rounds requirement in georgia. If you generally use one ounce and raise that 25% to 114 oz, its the same as increasing your choke from cylinder bores 40% to improved cylinders 50% as far as pattern density goes. It has a 22 rifle on top and a 20 gauge cylinder bore on bottom and is a short barrel. Clay shotgun chokes everything you need to know clay shooting. Shot spreaders or diffusion chokes work opposite of normal chokesthey are designed to spread the shot more than a cylinder bore, generating wider patterns for. Chokes for steel shot are not the same as for lead shot, a modified choke for lead shot would be a full choke for steel. Improved cylinder gun and game the friendliest gun. A modified cylinder bore is a further constriction with a tighter pattern for use at ranges beyond what the improved cylinder handles. In many le shotgun qualifications you qualify out to 50 yards with slugs. However, the weapon you have i control several is buttersmooth and reliable. Choosing shotgun chokes for home defense shooting illustrated. A very convenient table in that book arrived at by shooting thousands of shotgun patterns at varying distances gives pattern. All other normal chokes fit in between cylinder bore and full, or performance between 20 to 40 yards.
A full choke would leave you with a hole with fur around it on a close in shot. The only way to answer your question with certainty about a 60% cylinder pattern versus a 60% modified pattern would be to do a bunch of patterns and have concentric 10 and 20 circles inside the 30 circles and do a heck of a lot of counting. Idea for remove burrs and properly roughen the cylinder walls to produce an oil holding cross hatch pattern and provide an adequate seal. The choke of a shotgun acts like the nozzle of a garden hose.
Shotgun chokes and patterns how often do we hear from a fellow gun, or read in shooting magazines about the importance of. Pattern spread diameter is shown shaded within cylinder spread. The choke determines the diameter of the shot pattern at a given distance. If thats true, the cylinder bore 55% 30 yard patterns would degrade to 47% at 40 yards, 39% at 50 yards, and 31% at 60 yards, and mere 23% at 70 yards. The cylinder bore wont tighten your pattern, but if youre familiar with your ammo and know how it will pattern over a distance, you can still use it effectively. Well for game where smaller 78 shot fills out the pattern better is appropriate such a quail,grouse or even preserve ringnecks over a pointer where 90% of the shots are less than 30 yds. Unfollow cylinder bore gauge to stop getting updates on your ebay feed. As you already know, the cylinder choke is known for not giving users any restriction in their shooting. In an attempt to clarify during the period of shotgun development cannons were firing rounds distinguished by their weight 1,4 or 8 pounders for example, balls and the most common units of measure was a dozen 12 therefore the logic of dividing a one. I am thinking about trying turkey hunting this year, but i dont have a hunting shotgun. The shotgun analyzer program allows you to average as many targets as you. If the the pattern spread either the 75% spread figure from shotgun insight or the traditional pattern efficiency of the gun and shell combination is known at the break distance, then this combined with the shooters average can be used to estimate just how much variation the shooter exhibits when placing the shot. This is usually anything from cylinder bore to improved cylinder. The final refinement of my pattern analysis system was arrived at when i obtained a copy of oberfell and thompsons book the mysteries of shotgun patterns oklahoma state university press, stillwater 1957.
I hunted deer with hounds then, using buckshot, and the cylinder bore made since to pattern the buckshot factory loads better than a choked gun. The selfaligning and flexible shaft ensures a smooth movement to get you a nice even hatch pattern bore. If you want a universal short barrel, send it to carlsons and have them cut. Simply shoot, photograph, upload, and analyze to get detailed information about your shotguns performance. Apr 27, 2011 cylinder choke is the same as cylinder bore. Secondly, pattern alone is not sufficient, as patterns themselves do not kill. Shotgun patterning with target telemetrics youtube. Set a big piece of blank paper on a frame 40 yards from the muzzle. After extra full sizes are no longer listed in smaller than your bore, they are listed as the measurement of the bore. Shotgun patterning, handgun and rifle scoring and analysis using turbo targets are the first truly automatic software applications for capturing rifle handgun group data and shotgun pattern data on your iphone, ipad, mac or pc from camera images. Shotgun sports pattern analysis for busy sportsmen by ron jones. As the nozzle is opened, similar to the cylinder choke on a shotgun, water shoots out in a wider spray. As an example, a 70% 30 circle 40 yard full choke pattern becomes a 62% 50 yard pattern and a 44% 60 yard pattern and a 36% 70 yard pattern. So what is the best tightest group choke when using 00 buckshot.
If you are using a smart phone or tablet app you should gauge your results by. However, at 40yds or more, with any 2 34 12 ga load available, the patterns were all over a 4x4 target board. The muzzle is the same dimension as the bore of the shotgun. A modified cylinder bore is a further constriction with a tighter pattern for use at. A modified cylinder would leave a treetop squirrel laughing at you. You can use any load that matches the guage of the barrel, although with no choke the pattern will be good for close range only. As the nozzle is tightened, water shoots out in a long, narrow stream, similar to the full choke on a shotgun.
Depending on the person, a shorter barrel may not be a detriment. If you want to shoot all your patterns at 30 yards as i frequently do, just evaluate the results expecting 96% patterns for full, 83% patterns for modified, 71% patterns for ic and 59% patterns for skeet. Please read this manual thoroughly before use for proper operation. Fits 2 to 7 diameter brake caliper bores, engine cylinders of automotive, motorcycle and industrial equipment. I have had good luck shooting clays with a 14 entry gun. Cylinder bore means the barrel is the same inside diameter all the way to the end.
The cylinder bore of a shotgun is the diameter of the opening at the end of the barrel. Apr 01, 2016 the other way to tighten choke would be to just use a larger shot load. Information on shotgun bore size, the history of and how. Cylinder bore throws about the same pattern at 20 yards that full choke throws at 40 yards. From a graphic comparison of shot pattern diameters using 118 oz. Ar15 1911 remington 870 ammunition reloading gunsmithing tools. I wouldnt recommend a cylinder choke for turkeys, but for decoying ducks, quail, prairie chickens and sharptails on a calm day, or pheasants pointed by dogs, you would be better served with a cylinder choke than a full choke. The board, paper with dot, shooting bench, and sight picture are all the same. Turkey hunting with a cyinder bore, improved cylinder 18.
The weapon is open cylinder and if like all of ours, will have a high pattern. This pattern widens as the group of shot pellets gets further away from the muzzle. Every expert on shotguns declares it is as a poor choice, suitable only for poachers, experts, cripplers, taxidermists and so on down the line. What kind of pattern at 7, 15, 25, and 50 yards can i expect with a 14 inch cylinder bore mossberg. A greater number of ballistically superior round pellets in a shot charge gives you exceptionally uniform patterns delivering more shot pellets in the effective part of your pattern.