Primer Strikes

[eddiememphis]

I had a chance to clean and inspect my new .450 upper.

I cycled five rounds through it a couple times without firing because I had heard of feeding problem with this caliber.

I looked at the rounds and there is evidence of the firing pin hitting the primer.



I understand the free play in the firing pin caused this.
Is this excessive? Was this thing close the the dreaded "slam fire"?

I will not do this again in my home.

[eddiememphis]

Sorry for the giant pictures if it's a problem.

[Tim K]

Those look pretty normal for a free floating firing pin.

[DenverGP]

suspect thats part of the recommendations I've seen to use the CCI #41 primers in AR loads, because they are thicker and harder to ignite.

[whitewalrus]

Looks like the normal from chambering in an AR. Do the same with your 556 to put you at ease.

[izzy]

That would not put me at ease at all.

[beast556]

Completely normal

[izzy]

Normal or not I won't do that in the house again. Also, experiments, for science, have confirmed this does happen in a typical AR.

[VDW]

My brother had a .450 upper slam fire in our hunting tent while trying to load a round without a mag. Commercial primers aren’t reliably safe for a free floating firing pin in a heavy bolt especially, imho.

[Not_A_Llama]

The army had a comic about this around 2005. Dimpled primer is normal. Rotate out the first round in your magazine was their recommendation.