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6.5 Creedmoor Brass Questions #7158986 05/03/18 05:34 PM
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SenderoTaxi Offline OP
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I have about 300 pieces of Hornady Creedmoor brass that I've using.

I'm pushing 42.8 grains of H4350 down a 22" barrel and getting an average 2700 fps velocity(147 ELD Match).

These are in an AR-10, not a bolt gun, They are close to max, but not quite there yet.
Heavy ejector markings and flattened primers, but no blown primers.

After just two firings, many of them have loose primer pockets.

What other brands of 6.5 Brass is everyone using?
Can i expect to get better brass life from another brand or am i just running things to hot?

Last edited by SenderoTaxi; 05/03/18 05:39 PM.
Re: 6.5 Creedmoor Brass Questions [Re: SenderoTaxi] #7158994 05/03/18 05:39 PM
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Too hot.


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Re: 6.5 Creedmoor Brass Questions [Re: SenderoTaxi] #7158998 05/03/18 05:41 PM
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Re: 6.5 Creedmoor Brass Questions [Re: garyrapp55] #7159042 05/03/18 06:27 PM
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Originally Posted By: garyrapp55


Not when you're running them over-pressure, like the OP is.

Re: 6.5 Creedmoor Brass Questions [Re: SenderoTaxi] #7159063 05/03/18 06:42 PM
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42.8 of 4350 with a 147 grain! There's certainly high pressure there. AR-10's are rough on brass, and in combination of a max or over max load, it will wear the primer pockets out very quickly. The weak link on Hornady brass is the primer pocket. It generally tells you when your brass is done.


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Re: 6.5 Creedmoor Brass Questions [Re: SenderoTaxi] #7159090 05/03/18 06:56 PM
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Oh, and 2700 fps with a 147 is hailing the mail! That's certainly a stout load. I wouldn't run it that fast.


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Re: 6.5 Creedmoor Brass Questions [Re: SenderoTaxi] #7159109 05/03/18 07:14 PM
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Originally Posted By: SenderoTaxi
...22" barrel ...an average 2700 fps velocity(147 ELD Match).

Heavy ejector markings...

After just two firings, many of them have loose primer pockets...


Originally Posted By: FiremanJG
Too hot.


^^^ x2

Re: 6.5 Creedmoor Brass Questions [Re: SenderoTaxi] #7159663 05/04/18 03:58 AM
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Blowing primers is not max. That’s well beyond max.


"Anyone taking up handloading necessarily plays with unknown factors and takes chances. But so does anyone who drives a car,goes to a cocktail party,eats in a restaurant,or gets married."

Jack O'Connor 1963
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