18" minimum as you don't have much spare fps to play with, nore option of a semi any longer.
Think my JP 18" used to do around 2450 fps with 123 SST's.
18" minimum as you don't have much spare fps to play with, nore option of a semi any longer.
Think my JP 18" used to do around 2450 fps with 123 SST's.
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