Sir Allen,
I have been wanting to find an accurate, single-ball, squib load for the .458 WM and .45-70.
We have all kinds of 3000 to 6000 ft-lbs loads with 250-gr to 600-gr bullets of all types for DGR us.
We use velocities from Mach 1 to near Mach 3.
The next frontier is to make some subsonic small game loads.
Stay tuned.
I am thinking maybe a single .36-caliber lead ball in a .45-caliber sabot.
Or a near-bore-diameter lead ball (.45") wrapped in paper or Teflon tape.
So, a slower twist .45-70 (1:20" or 1:18") might be better than the 1:14" .458 WM.
We'll see.

Also, using the Speer plastic shot capsules for .45 Long Colt:
Stack two of those filled with No. 9 shot, one seated deep and one seated shallow.
That will allow the .458 WM+ to compete with the .458 Lott as a garden gun.
Garden gun use is the only area of superiority of the .458 Lott at present.


Ron aka "Rip" for Riflecrank Internationale Permanente
NRA Life Benefactor and Beneficiary
.458 Winchester Magnum, Magnanimous in Victory
THE WALKING DEAD does so remind me of Democrap voters. Donkeypox.