New Ruger American won't fire

[257wbymagkiller]

I had a problem a while back when the first released the Ruger American ranch in 300 BLK. They sent me a new bolt as well. But from what I've read the 300 BLK had a mess of problems

[257wbymagkiller]

Dang shark bait. You killed it on that post.  lots of good info. 

[Duckslayer89]

Ok, so maybe something to clear the air here. I am pretty sure the COMBLOC ammunition is meant for semi auto rifles or at least they are covering thier bases.

The harder primers are sometimes needed in semi auto weapons. Many semi auto rifles use a floating firing pin and there is a chance, however slight that firing pin inertia could ignite the primer. There are also concerns with crew served weapons that fire from an open bolt.

I use BR-2 primers in my M1a. They are known as a soft primer, but I've never had one slam  fire. I've cleared that rifle and had the chambered but unfired round show a light primer strike. I would never use this ammunition in my FAL, Ar10 or some AKM based rifles.

As far as shooting .556/7.62 in bolt rifles chambered in .223/.308? I've done it for decades and never had a single problem.

Last... As long as I'm at it. You only need small base sizing dies if you suspect that the brass has been fired in a belt fed open bolt weapon such as a FN 249 or 240. The chambers and headspace can vary widely and can deform the brass making small base dies necessary. NOTE... Do NOT fire commercial ammunition in a wiped out beltfed machine gun.

         *********Google was not used or abused in this post*****

I have a ruger mini 30. Is that a floating firing pin? That's crazy about slam firing I've never even heard of that before!