700 classic in 300wby
But, almost all of the .30 caliber Remington rifles have 1 in 10" twist (with the exception of one listing for a .308 Winchester). I can't imagine why it would be that much different from a .300 Win. Mag. They also announced in the catalog that the new ammunition they were producing for the .300 Wby. was a round nose 220 grain load.
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