actually i was wrong too with the 200fps per inch. but i just saw a guy cut a 24" barrel to 16.5" at every inch. the 24" was the fastest. like Hilters V-3 cannon you do get the fastest rounds out of the longest barrel. im sure a 5.56 will eventually slow but i dont think we'd know when, when most only go to 24". i believe him since most 24" barrels like the tester guy shot, was almost 3500fps out of a reminton 700 with a normal 5.56 55gr round. the guy that shot through the ar500 had a "bull something" barrel that was chrome lined or something, adding to the speed he said. he seemed to know his stuff so id guess he did 3700fps with a chronograph at some point.
regardless of m.v., at 50 yards he punched straight through it while none of us could.
Quote:
Originally Posted by Ghostvette
Interesting. Since most of my 5.56 platform guns are 16", muzzle velocity doesn't matter much to me. While the 5.56 will shoot to 600 yards, I don't see much need to shoot that range with that small of round. For 600 to 1000 yards, I prefer a .308 or .30-06 (again, personal opinion/preference). While muzzle velocity will increase to a point over a 10" barrel, there is a barrel length that you get max velocity, anything over that will actually cause a decrease. So maybe I was a little out of line saying 'BS' on the m.v. claim. Unless you were shooting over a chronograph to get an accurate reading on velocity, someone saying his muzzle velocity is xxxx, I tend to be a little skeptical. That's just me. I'm more of an accuracy guy, I load to what gives me the best performance out of my gun at the range I want to use it for. For what it's worth, I just looked at Federal's website for their ammunition. It shows that a 55 grain boat tail is driven at 3240 fps. They show 3700 fps with a 40 grain Nosler Ballistic Tip.
I definitely don't want to get into a disagreement over m.v. on a 5.56, or what it does to body armor. I've been around firearms for a long time, and I tend to be skeptical when someone claims a m.v. that sounds outrageous to me. It's great that there are Z owners that enjoy firearms and shooting, so on that note, I'll say no more about 5.56 m.v.  |