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6gt primer cratering?

Ragin_cajun

Private
Full Member
Minuteman
Dec 31, 2011
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Ok guys need your advice. Just did a load work up on my 6gt and I’m getting a little primer cratering. The gold primer is Hornady factory ammo and the silver is cci450 I used for the reload. Both look very similar but I’m not wanting to wear out primer pockets early. Brass is Hornady. Load is
Berger 105
36.9 gr of h4350
Cci450
Hornady brass
2935fps
 

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I don’t see any other signs of pressure. Also the cratering is asymmetrical. From what we can see, I’d say either ignore it, or get your bolt bushed. If you’re experiencing any pierced primers, then definitely get the bolt bushed.
 
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I don’t see any other signs of pressure. Also the cratering is asymmetrical. From what we can see, I’d say either ignore it, or get your bolt bushed. If you’re experiencing any pierced primers, then definitely get the bolt bushed.
That’s what I was thinking, thank you
 
Ok guys need your advice. Just did a load work up on my 6gt and I’m getting a little primer cratering. The gold primer is Hornady factory ammo and the silver is cci450 I used for the reload. Both look very similar but I’m not wanting to wear out primer pockets early. Brass is Hornady. Load is
Berger 105
36.9 gr of h4350
Cci450
Hornady brass
2935fps
Primers look fine, except for the cratering. It's apparently the firing pin hole letting the primer material flow into the space around the firing pin. If you get the firing pin hole bushed, as mentioned before, that will solve that problem.