Home Forums Hunting & Shooting Express Rifles and Big Bores Only The great 458 Winchester. Everyone should own one at least once

Great suggestion on the Speer .458/300-gr, Sir Scotty.
Probably more accurate and way tougher than the Sierra HP.
The H4198 data would be good with the Speer.
My bad with the Sierra 300-gr Pro-Hunter hollow point exploding bullet:





So next I tried AA-1680 and only got to 76.0 grains where the bullets started vaporizing
one on the way to the 25-yard target at 2798 fps instrumental,
the second one killed the instrument at 5 yards.
I did not shoot the third one I had loaded with that charge.
76 grains of AA-1680 is about 95% LR/net fill, without use of drop tube, for 0.34" seating depth.