Dakota;
I am looking at a target from 2 weeks ago, Rem. 788, .243. Gibson's el cheapo scope from '84, the Lyman, supposed to be 83gr, mine weigh 91gr with lube and gas check.
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14gr IMR4227, 1500fps, 3 in 1/2" at 50yd, 16gr Imr 4227,1650fps, 3 in 1/2 x3/4" ,50yd, 24gr IMR 4198, 2300fps, 2 touching 3rd ,1/2" to right, 50yd,26gr IMR 4198, 2550fps, all 3 missed the paper, 50yd.
I was using air cooled ww's with 2% Tin, am going to try again with water dropped bullets and see how much I can increase the velocity.
Air cooled, my alloy has a BHN of about 11-12, water dropped, it is about 17-18.
Using both liquid alox and LBT soft blue, latter applied in the hot sardine can method.
Don