Re: 223 powders
The 1950 .222 case head:
The .222 is registered with SAAMI at 50,000 psi.
The .222 can get long brass life with 75,000 psi.
The .223 is registered with SAAMI at 55,000 psi.
The .223 can get long brass life with 75,000 psi.
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The 1889 7.65x53mm Mauser case head with large Boxer primer pocket:
The .308 is registered at SAAMI with 62,000 psi.
The .308 can get long brass life at 65,000 psi
The 8mmMauser is registered at SAAMI with 35,000 psi.
The 8mmMauser can get long brass life at 65,000 psi
The .270 is registered at SAAMI with 65,000 psi.
The .270 can get long brass life at 65,000 psi
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What I do:
I run the .222 at 75,000 psi
I run the .223 at 75,000 psi
I run the .308 at 65,000 psi
I run the 8x57 at 65,000 psi
I run the .270 at 65,000 psi
What does it all mean?
Published load data for the .223 is wimpy, but it is not as bad as 8mm data.