Pete, my old Pedersoli .45 was one of the most accurate ML that I have had the pleasure of shooting. It had been a display gun for Pedersoli's American dealership, and I got it at at really nice price.
First time I took it to the range (old clay pit!), I loaded a .44 ball with some unknown patch material - didn't know at the time to mike the material. Used 75 gr Goex 3F. No bench there, so I took a prone position, and shot. The ball nicked the left side of the 1" bull. Two subsequent shots made a group just over 3/4". I put my "sight adjusting tool" (brass hammer) and left the sights where they were. Wish I still had it.
Building a .62 cal Jaeger now, 29 1/2" barrel, swamped, 1.25" ATF. Barrel is by Charlie, and he did a fine job. Got a lot of wood to remove from this chunk of pretty English Walnut, but it is coming along. Hope to inlet the lock later today, or at least get it started.
I have no problem holding it up, but really cannot walk very far before the hip joints start screaming at me. One of the VA orthopedic guys is going to check out my hip joints in two weeks, and we will find out if I get new ones. Hope not, as I live alone, and my trusty Service Dog, Sunny, refuses to even make coffee for me!
But, if and when they fix the hips, Iwould like to borrow your Lakota Sioux friend. He can have at least 75% of the meat. And like you I have been wondering about a short bullet for the Jaeger. The twist that Charlie put in is 1:57 - it may work or may not.
Been enjoying reading your posts, and want you to keep going with your .58 plan. My first ML was a .58 - 1863 Springfield! Good honest shooter, it was.
Take care, my friend.