Who has chrono'd various ammo out of a 16in ar?

[Cupcake]

I've been buying Rem UMC, and I'm curious how it stacks up (velocity-wise) against other plinking/stockpile rounds of the 55gr FMJ variety.

[DefensiveCarry.com]

[airslot]

Remington list the 55gr UMC at 3240fps muzzle velocity.
What they don't list is the length of the test barrel.

[Cupcake]

Exactly the problem I have with most reloading recipes too; they list a velocity but don't say out of what. I'll probably be getting a chronograph in the next month or so, but I just blew $350 on shooting and loading stuff so I have to let the wife forget about that first.

[farronwolf]

My alpha chrony is some of the best money I have spent. It will measure pellets, arrows, as well as the bullets. Right now Midway has them for 90 bucks. I think I paid 100 for mine a few years ago.

I don't use it too often, but when developing loads, I feel it is just about necessary.

Maybe you can find someone close to you that has one to borrow.

[stoprilshoot]

im gonna say the rem spec are out of a 20" barrel. the NATO stuff will do a little over 3000fps from a 14.5" carbine with standard loads your looking @ 2700-2900fps.