Primer selection

[Davecoff13]

Has anyone used the CCi 400 small rifle primers in ammo that was used in an A.R. platform? I know they want you to use the number 41 military primers as they have a harder cup to prevent slam fires. I used them when I first started reloading but not in any volume. Never had issues but wanted to know peoples thoughts . Thanks 

[MadBomber]

Yes, I have used thousands of those in AR's over the past few decades.  Not once have I ever had a slam fire.  Hope that helps out.

[Davecoff13]

Yep thank you 

[dtuns]

I use CCI 450

Edited February 16, 2023 by dtuns

[frankge]

400s never a problem, they leave a dimple on the last round in but never a slam fire

Edited February 17, 2023 by frankge

[rifleman777]

I’ve used many thousand CCI’s and Federal’s (I know they’re softer) in the last several decades (mostly on prairie dogs and coyotes) and never had a slam fire.  Like frankge said above, a there’s a very slight dimple on last unfired round in the chamber.  Just make sure you don’t have any high primers.

[Davecoff13]

Thanks for the replies 

[usmc1974]

CCI small rifle primers is about all I use for everything rifles and pistols