Friday, September 4, 2009

Patterning and Zones of Effectiveness

Okay, in this segment, we are going to talk about two related concepts. Patterning your tactical shotgun and the selection of ammunition for use in the self-defense shotgun. Patterning your shotgun provides you with valuable information on the performance of your gun and ammunition combination. This information will allow you to make informed choices on your load selection to match your particular shooting situation.

First it helps to consider the difference between fact and fiction. Thanks again to our friends in Hollywood, the average uninformed citizen sees a shotgun as a weapon that blasts an impenetrable wall of destruction from the muzzle to infinity, mowing down everything in its path. This is a dangerous misconception.

The shot load exits from the barrel of the shotgun at the same diameter as the bore it just left. It cannot do anything else. A shot load is then going to disperse from a cylinder bore barrel roughly at a rate of approximately 1” for every yard it travels. So, it will give you a pattern approximately 11’ in diameter at a range of 10 yards. I say approximately because, of course, this is going to vary, depending up on the type of barrel you are using and the type of shot charge that is being fired.

This is important when you consider the fact that a shotgun is a pattern weapon. In other words, it delivers its projectile (a shot charge) to the intended target in a pattern. Understanding the effect of distance on that pattern is very important.

The effective range of a shotgun can be thought of in terms of zones. In the first zone (call it “A”) which is from the muzzle to a distance of approximately 6 yards, you must consider the charge as a single projectile. In other words, despite what you see in the movies, you must aim your shot, or you can miss, just as with the case of the handgun or the rifle. Simply throwing the gun up and blasting away, confident that you will destroy anything in its path like you would with a Klingon death ray will not be effective and can get you killed.

In the second zone (“B” – what else?), the shotgun reigns supreme. From approximately 7 yards to 20 yards, it excels as a stopper. The shot charge begins to transition into a dispersed pattern and can deliver an extremely hard-hitting impact to the target.

Past 20 yards, we move into Zone “C”. The pattern continues to transition, but it is spreading wider and as it does, it raises the question of whether you are going to be able to put enough pellets on target to deliver a telling blow. This means you are back to aiming, and at some point, you will be considering moving from the shot charge to a single projectile slug charge, which can be effective out past 100 yards, based upon your ability to fire the weapon accurately at that range.

Since FBI statistics demonstrate that most law enforcement shootouts involving use of the rifle are at ranges that don’t exceed 75 yards, this shows that the shotgun can be an effective tool at that range if you are selecting the right load and are skilled at placing accurate fire under those circumstances.

So, how do you pattern your shotgun? Patterning for the tactical shotgun is done at 10 yards, or within the “B” zone. You should use a variety of shot loads and brands of ammunition at that range to see what the combination of your barrel and those loads will produce. In addition to everybody’s perceived favorite of 00 buckshot (“double-ought”), you should also consider using No. 4 buckshot as well as No.2 shot.





Many self-defense experts recommend sticking with No. 4 buck as a self-defense load (more shot that is still a large projectile and knowledgeable trainers will counsel you to stay away from the magnum 3” shells. Standard 2 ¾ inch shells pack a very hard wallop, more than sufficient for self-defense, without the heavy recoil that can interfere with your ability to put multiple shots, rapid fire accurately on a target or group of targets.

Take a look at your pattern. Is it concentrating shot in the center of your target, or are you experiencing a “donut effect” where there is a noticeable absence of shot in the center and more peripheral hits?






If so, you may want to try a different brand of ammunition, this often will correct the problem, and no, I do not know exactly why, other than to say the combination of barrel and ammo has a decided effect on where it throws the shot charge.

Knowing where your shotgun is sending its shot charge is critical to your ability to know and understand the value of your tactical shotgun in a self-defense encounter. The tactical shotgun is a very combat effective weapon, if you maximize its effectiveness by focusing its shot charge in the center of your intended target. It is capable of doing more things than any other weapon system and uses its energy very quickly on the target medium. For these reasons, it is a very efficient home defense tool.

Next I will be discussing some aspects of the tactical use of the shotgun as a self-defense tool.

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