Cayugad and I were PMing back and forth a bit about using MMP sabots and 405 grain .458" bullets.
I shot my T/C Hawken with the GM LRH barrel with this combo using 80 gr of Goex FFg.
At 50 yards, peep sight, all I can say is WOW! Swabbing between shots this charge put 3 bullets into a cloverleaf about 1" left of the bull at 9 O'clock. A tap left of the front sight about 1'16" put the next 2 in the 1' bull! I then began having some fun busting fist sized sandstone rocks that stick out like a sore thumb on the black coal bank where we shoot. After this shooting session I have determined that THIS will be the other rifle I will be taking on my hog/deer hunt in lieu of the .58.