What will m855 penetrate

This led to the current group of APDS with depleted uranium and other material to provide the Mass to go down range. The older AP rounds in the rifle caliber. The 5.

While there are a few sabot rifle caliber rounds out there, they aren't real common. There are a lot of factors in pnentration besides velocity and mass such as at what angle the hardend target is hit.

In closing all of the U. Troops were generally surprised at the ease in which the Iragi T72's were killed in Gulf War one. As stated they were export models missing the armor and other options on the Russian versions. Common knowledge was that reliable penetration of the front slope of a T was always questionable with a M60 series tank. Quoted: What 5. Quoted: Quoted: Try shooting from farther away. If velocity is high enough the round will fragment before its momentum permits it much penetration.

You can see this easily. Drop an egg into thick batter from 10 feet then hurl it with all your might at the same batter. Which penetrated better? Basic physics, folks. Water is water at fps. It is concrete at fps. Quoted: Quoted: Quoted: Try shooting from farther away. Which penetrated batter? Fixed it for you. Quoted: Quoted: What 5. Shoot for the driver's sight block. I agree. After more thought, it does make sense that in softer mediums there would be a point of diminishing returns as you increased velocity.

At some point more velocity will decrease penetration. But this is obviously not the case on material that is harder than the bullet. At least for realistically achievable velocities. I don't think anyone really thinks that penetration on hard armor would increase at meters, do they? After all, this is how this whole discussion got started. By backing my gongs out another yards I can surely not expect to improve penetration on hardened steel. Can I? Quoted: Shoot for the driver's sight block.

I was trying to keep it loose for scientific purposes! Why blue They are baby blue. This is Tactical Blue. Perhaps I could drag you out for this! I can just see me hitting these gongs at with irons! I might not want to post the pics. I have a few rounds of. Would be fun to try them on something hard at night.

There appears to be confusion in the use of the term penetration. In this regard, penetration will only get worse with distance, since with 5.

Mcantu and others are speaking of penetration INTO a material softer than the bullet itself, such as ballistic gellatin, wood, sand, etc. In this case, higher velocity actually inhibits penetration INTO these media all other factors being equal , as Tatiajana's example points out. Quoted: I don't think anyone really thinks that penetration on hard armor would increase at meters, do they?

Quoted: There appears to be confusion in the use of the term penetration. At ranges beyond that, were velocity of either M or M have dropped, the harder material of the penetrator does enhance penetration compared to a similar bullet without the penetrator. It was improving penetration performance at ranges from m that the designers were concentrating on when they designed the round, and M does indeed increase THAT performance.

Unfortunately, it does so at the price of reducing performance in several other areas that are much more important to the average civilian who would likely be shooting it from a semi-auto rifle at a much closer threat. Echoing PAEBR's comments about mcantu's post: When you are trying to penetrate metal armor, the most important thing is high velocity which means high energy and a small frontal area.

So, in this situation, you'll get the best penetration at point-blank range where velocity is the highest. When you're trying to penetrate softer mediums like sand, wood, cement, dirt, etc. The lesson is that terminal ballistics isn't simple, and you can't reduce the rules down to a buzzword or phrase.

There are a lot of factors that have to be considered before you can accurately predict what a bullet's performance will be like. One of the biggest challenges is finding a bullet that performs well across a wide range of scenarios. Often people are tempted to use a design that is very good at a particular scenario, but fail to consider how rare that scenario is, and how badly compared to other bullet designs that bullet will perform in more common scenarios. Witness the debates over the LaMas ammo I hate Troy.

He's always so rational and right! I got the gong for you! This hunk is very heavy. I probably just lean it against a rock or something. Markm, As requested and as promised close ups of the Fire Extinguisher pic 1 XM 55gr distance yds pic 2 M 62gr distance yds.

Are those both "exit wounds"? I would have thought the M would keep up with M a little better. It penetrates glass, thin metals, thick clothing, and brush rather well. Because M ammo penetrates so well, it can wreak havoc on steel targets and protective backdrops.

Some ranges restrict its use, so be sure to check the rules at your local gun club before you use it. When it comes to performance on soft targets, M leaves a lot to be desired. The M does a better job here, although its performance in soft tissue is anything but predictable.

It is even longer than some 69 grain FMJs. This extra length requires a faster twist rate for proper in-flight stabilization. For this reason, M performs well in barrels with a or twist. Calculating the optimal spin rate of a specific projectile is well beyond my mathematical capabilities. It does have a slight edge over M at longer ranges thanks to its improved ballistic coefficient.

Civilians are not as restricted as the military when it comes to what type of projectiles we can use. While it will work in a pinch, an FMJ with or without a green penetrator tip is not the best choice for self-defense. Neither M nor M is going to provide solid gold performance. However, both of these cartridges are affordable, readily available, and consistent enough to make most shooters happy.

If you simply consider them a general purpose load, you can understand why these 5. Let your fellow shooters know — share this article using the Facebook, Twitter and other social media icons below. The more we all know, the better organized and stronger the shooting and hunting community will be. The Lodge AmmoToGo. Look for tips for the range here. About Us Contact Us. Skip to content Firearms 2. The Ammo we will be testing. Proper Carry Etiquette March 2, Craig says:. October 28, at pm.

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