What is 5.56 caliber

Caliber is actually the groove diameter of the bore. Shop in stock 5. When they say. While the casing for the rounds are not the same and the bullets may look wildly different, they measure the same diameter of.

Well, your buddy is right. The largest difference in the. The biggest thing you need to be concerned about with this is the chamber pressures. With the introduction of. The 5. But a. The biggest takeaway is that the amount of powder is the biggest difference in the. After all, the. I know, I know. We have to address yet another part of a bullet. The grain of a bullet literally refers to its weight. Again, the grain refers to the weight of the bullet only.

It does not include the case, powder, or primer. So we are just talking about the part that flys through the barrel and strikes the target.

Bullets come in various grain weights, which is what gives a bullet different flight trajectories, thermal ballistics, and velocity. After you ask yourself some of the above questions, researching what grain bullet to buy becomes a much easier task. If you only care about sending your rounds through paper targets for fun then cost is gonna be the most important factor. Differences between the two are small but can have a large impact on performance, safety and weapon function.

The first difference is the higher pressure level of the 5. A Remington is loaded to approximately 55, psi. The second and most important difference between the two is the fact that a 5. This allows approximately one more grain of powder to be loaded into a 5. There always seems to be a lot of confusion over the difference between a.

Maybe, maybe what? Alan, A. However, the 5. So, the 5. Today, most ARs are built to handle the 5. But I do not see any sense in why I would want to use the 5. As such it is always good to know that if I run out of. I served 12 years in the U. Army infantry. Three combat tours in two different combat zones. The AR15 utilizes the 5. Just saying. That explanation would be helpful. All Bushmaster rifles are chambered to accept 5. While it is safe to fire both 5.

This is possibly the most helpful and informative report I have ever read when trying to understand something from the Internet. Thanks a bunch. Want all the facts and answers to the 5. I just bought a Ruger Mini It is listed as. I went to a reputable sporting goods shop that sell both gun and ammo and asked the same question. But if the barrel only says.

The rounds appear to be the same, however the pressure is much higher on the 5. As one mentioned above you can shoot and 38 into a. Wonderful amount of info!

Troubling to us technophobes! THAT I can understand. It is the chamber and barrel that matter, not the lower receiver. If your upper says that it can shoot 5. Have fun shooting your AR! It is an HBAR match.

Can I shoot 5. I would think so, if the barrel,and rifle has. There should be a mod on it somewhere, be quit sure, its dangerous using 5. I would say yes you can. Just my thought. The lower receiver can have a number of different types of barrels attached to the upper which is then attached to the lower receiver.

In your case the Barrel says 5. Hope that helps and be safe! We may have to wait on someone to say they are an expert…then they can take the liability from their claim —lol. I just went through this with my new Colt AR It has. I found out that what is stamped on the barrel is what should be used. Mine has 5. However, if it were stamped with the. Thanks, Doug! Appreciate the info! Larry Viegas. Your rifle will be fine to fire that M ammo that you bought.

And I live in a densely populated urban environment in Baltimore, Maryland , and I think that M is too penetrating for civilian defense use here. So I use the Vietnam-era M, for riot defense.

I have purchased several hundred rounds of M Ammo for the weapon. Thanks, Larry from Arlington, TX.