Here's a post from another sight from an accomplished shooter, probably where I'd start my research if I build a 300 cal.
260 shooter,
Hey!
Getting ready to build a .300 Norma mag myself reamer is on the way. It will shoot and barrel life should be close to the Hulk at about 2000-3000 rounds of pin point accuracy. This cartridge will shoot out to one-mile no problem with 208's and or 240's.
Retumbo or H-1000 will do the trick with about 82-85 grs. with 240's and 88- 90 grns. with 208's - 210's. Velocitys will be around 3100-3200 with 208-210 and 2900 plus with 240's.
Barrel life is greatly misunderstood with most rifles. 1000 yard BR proves it a bunch.
Hope to see you and your daughter again soon!
Tom
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Tom Sarver
IBS 1000 Yard World Record Holder Group and Score
1.397" Group 50/5x Score
Thunder Valley Precision
07FFL/SOT2
15786 TR.118 Kimbolton, Ohio 43749
[email protected]
740-502-6530
20+ years experience as a long range precision shooter
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A man's got to know his limitatons, only then can he train to go beyond them.
I'd be willing to guess he has some 30 cal experience.
Ed