I wonder if someone with a ballistics program could run some numbers for me. I'd like to know the approx. MV of a 140 gr. SMK over 46.0,48.0,and 50.0 grains of Re 22. 6.5-284 Lapua brass Fed 210 primers 26" barrel Any help would be appreciated Chris

Assuming your touching the lands, & bullet shank seated .26 into neck: 48gr= 2720fps (~47kpsi) 50gr= 2820fps (~51kpsi) 52gr= 2920fps (~57kpsi) This from QuickLoad. SAAMI max =59kpsi

Thanks Mikecr I'm actually .010 off the lands and quite a ways into the case neck. OAL is 2.965, 3.465 on a stoney point comparator. But at least I've got some ball park figures to start with. Thanks again Chris

The reduced starting pressure offsets the reduced case capacity w/regard to pressures, and velocities should remain very close.