250 Grain Boolit, Velocity & soft composition is not coming easily, 2" at 80yds SR-4759. Do I need to W-Quench 50/50 +2 to get 2000 fps. Tried many powders. Had a load 26 gr SR-4759 RCBS 35-200 Sellier & Bellot primers shot lights out accuracy, Then 30 GR 1.5" went through that Lot#
of primers & nothing has been easy since. I have gently tried W-748, IMR-4064, IMR-4350, W-760, AA-2015, WC-846, IMR-3031, & faster powders, I Need to pick a powder for this heavy bullet & stick to it til accuracy happens, would like to hear of your experience in comparison to load & rifle. I'm using BLR 358 & Ruger African 358 20" barrel. Hoping some input can lessen the usage of hard to come by loading material.