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

3.580" COL with the 500-gr TSX is nowhere near max for a .458 WM+ load in a Ruger No. 1 or CZ 550 Magnum, etc.
Could go to 3.780" in a SAAMI .458 WinMag chamber. The SAAMI .458 Lott chamber cannot do that.

Excellent 400-gr Swift loads at 3.262" COL. Remember to add at least 72 fps to correct the 20"-barrel velocity to 24"-barrel length.

AA-2230 is just too slow for the 350-gr TSX at 3.230" COL.
H4198 is where it is at with that bullet, and longer COL in a .458 WM+ load.