PRB over 85 grains FFFg. When I settle down and take my time, 50 yd groups around 2", both on bench and off. Never tried 100 yds with it so can't speak past 50. With that load I did kill a groundhog a few years ago around 96 paces with about a three inch holdover.
A bad day hunting rabbits beats a good day of anything else!
I'm currently shooting 90gr of FFF pushing a .495 lead round ball. My patch is .010. I am getting accuracy out of my deerstalker, but the burn marks and holes around my patch indicate I'm having blow through. Since I am shooting accurately now and I am hunting with it I'll use it for now, but come warmer weather I plan on trying a thicker patch. Otherwise i was getting 1 inch MOA benched at 50yds provided I do my part. I'm still fairly new to the flintlock game.
I use 70 grain 2F Swiss, .490 round ball with a .020 patch. At 50 yards it gets under two inch groups off the bench. It broke an average size does' shoulder blade at 35-40 yards. The ball broke a rib and buried under the hide on the opposite side.
Experiment with it. That's the fun of shooting black powder. Start low on the powder charge and work up. If you go with the round ball patch it as tight as possible. If you try a sabot/ bullet or a conical of some type and get good results, go with it. Good luck!
Mine is a .54 flinter and I can't get real good accuracy after 60 grains of 2f. It is deadly accurate at that charge; like it could put them in the same darn hole at 50 yards. Move up to 70 grains and it starts to open up a lot; about 2.5" to 3.0" groups at 50 yards. It is ok up to 80 grains but the 1/48" twist barrel is just too fast for real good patched ball accuracy. It's just not predictable accuracy with hunting loads of 80-90 grains. With your .50 caliber you can probably charge it up a bit more and still hold good consistent groups.
My slow twist barrels will shoot 2" groups at 100 yards with hunting charges of 80-100 grains. My first 1/48" twist and my last. I like the stock and overall the rifle has good finish and balance. Lock and trigger is great but I was hoping for at least an 80 grains charge holding 2" but so far no luck.
My expectations are probably a bit different than most and a 3" group at 50 yards would still take deer but it's not tight enough for me. If I do hunt with it I will use the 60 grains charge and limit to 50 yards max.
80 grain goex 3f - .15 patch over .490 roundball in my 50 caliber lymans deerstalker - 2-3 inch groups @ 50 yards - 3-6 inch groups @ 75 yards - with practice. I've shot @ 100 yards at the range from the bench - no consistency to even think about a shot at this distance for me.
my gun shoots fine, it's my skill that's suspect. i can miss 'em at much closer distances than 50 and proved it again this year.
Last edited by MAK Hunting; 01-11-2017 at 10:18 AM.
Reason: missed caliber id