The go to load for the M1A/M14 is 41.5 grns of 4895 in either LC or Winchester brass and either 168 or 175 SMKs, and Federal Match Primers. It's been the standard for high power for years.
Some rifles like the above load with Hornady 168s.
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Kraig Stuart
CPT USAR Ret
USAMU Sniper School
Distinguished Rifle Badge 1071
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