"100 yards, 3 shot groups" 5/8" groups with a 385 grain great plains, 1" with either a 245, 295 or 348 grain powerbelt, Havnt shot the maxi hunters in almost 2 years but am really wanting to try them. 360 grain minnie conical 3" 100 yards, I hate those minnies due to the force that it takes to get them down the bore, .429 sabot with a home cast 240 grain all lead bullet, the best i did was 1 1/4", 250 grain SST i shot last year was 1 1/2" in 20mph wind. I cant use sabots in colorado, so i never really put much time or money into sabots. 385 grain Lyman mold Bull Shop conical,sized in .501" shot 2" groups @ 100 but i ran out before i could try different charges to fine tune the load. Havnt tried the maxi hunters due to poor performance i got on a deer i shot and had to track in for a 1/2 mile before shooting it again and then havig to track it another 1/4 mile. Talk about a fun hunting trip that year! My first year muzzleloading. After that year, i went and bought powerbelts when they came out, or i should say when the stores finally stocked them.
My last load i shot this week was a 410 grain great plains conical and again. ran out before i could add a little more powder but still averaged 1 1/2" group.
This is a Winchester X-150 with a free floated barrel.