I might have screwed up. I delt for a very nice CZ 550 varmint in 308 with H-S stock. I want to shoot cast in it. 1 bullet is .980 long want to shoot it 1200 to 1350fps. other bullet is 1.020 long want to shoot it 1700 to 1850fps. My Rem 308 does this fine. My Rem. is a 10 twist. CZ has a 12 twist. Is this going to be a problem?
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