Anyone using AR-COMP in .223

[jaholder]

Picked up a pound of it Friday, is anyone using it for 69-77 grain bullets? It also looks like it'd be a great powder to get 5.56 velocity with .223 pressures out of 55 grain bullets, how's the temperature stability?

Thanks in advance!

[markm]

Is this one of RELOADER's powders? I've not tried it... but I think it's supposed to be a "temp stable" attempt by RELOADER. Which isn't saying much because of how horribly unstable there other RE powders are. I'd never push 5.56 velocities with any RE powders.

[Kansaswoodguy]

Never tried AR-Comp. I like Reloader 15 and Reloader 17 and a buddy runs a lot of Reloader 33 in different calipers. I don't think their bad powders. For 75-77gr bullets 8208 is a great powder in 223 and in 55gr I've been playing around with CFE 223 some and liking it so far I just picked up 8lbs to play with. I'd be interested in what others that have used AR-Comp have to say about it also.

[themonk]

I got a bunch of it after Sandy Hook as it was the only thing around. Not my favorite but it works. I keep it stashed away if needed for a rainy day.

[308sako]

I had extremely good luck with the first 1o pounds of AR Comp, then I hit a different lot and nearly blew my rifle up! This was using 55 grain bullets in an 11.5" SBR.

See my thread on this occurance.

https://www.m4carbine.net/showthread.php?169552-why-you-must-rework-when-changing-components-or-lots&highlight=

[markm]

I had extremely good luck with the first 1o pounds of AR Comp, then I hit a different lot and nearly blew my rifle up! This was using 55 grain bullets in an 11.5" SBR.


I've had a few powder lot/pressure change experiences. XBR 8208 started popping primers after a lot change, then Varget lost 60 fps in .308 after a lot change. It's a real issue.