i have a lyman gpr with a 1-32 twist barrel. ive been told that sabots load very hard. what bullet-sabot-powder charge works best for you...........i will be using 2f black powder.......# 11 mag caps.........thanks for any help...........DECKAPE

with our 50cal cva mountain stalker and 1:32twist we load 80gr pyrodex rs and a 295gr powerbelt aerotip. Last time i shot it at 100 yards i came up with a 1" group. Lots of stuff out there for you to play with.

Now you are talking. That's my favorite gun. I have 4 lymans. The GPR is actually a 1:60 twist. You have the GPH which is 1:32 twist. I took 3 deer this year with mine. I get less than 2" groups at 100 yards using 100 gr Triple 7 and a 425 gr Hornady great plains conical. Mine will shoot maxi balls , maxi hunters and modern sabots but shoots the Honady the best. I took a deer at 118 yards this year and it didn't go 15 yards when that conical slammed into her. You will love the gun. Have fun experimenting

I also have barnes expander mz's 325 gr, I have shot Scorpion Pt gold 300 gr, and 300 gr shockwaves by putting them in a 54 cal sabot for a .451-.452 bullet. They shot great and did not load hard. I have some powerbelts but do not shoot them as they actually are way to loose. They will move off the powder charge to easily plus I would have to back the powder down and my lyman prefers a 100 to 110 grains. At least in the 1:32. Now my 1:60 shoots great with 80 gr. Try the great plains conical I think you will find it deadly accurate.
I didn't ask what cal. Mine are all 54 cal. If yours is a 50 then I don't know what they prefer.

In the Marlin 50 caliber muzzle loader I used 295 grain Powerbelt hollow points and 2 50 gr Pyrodex pellets. So 100gr of Pyrodex in the form of pellets.

I plan to try the same bullets in the Genesis with 100gr of Tripple 7 pellets. I have shot 150 gr of Pyrodex pellets with the same bullet in the Genesis and want to cut down on the powder used.