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300 ultra mag info.

mule

Silver $$ Contributor
Any info on 230gr Berger out of 300 U.M. 1 in 10 twist 29 " barrel . Thanks for any help


Michael
 
Berger loading manual has max loads at Retumbo 88.2; H1000 84.8; R-25 81.8. You should start under these and work up. Matt
 

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