Hornady Great Plains bullets arent too bad, I shot them for a while. Personally couldnt get very good grouping past 100 yards, so I kept my shots under that.
But as with others on here I became a devout using of the harvester hardcast. I shoot 330 grain bullets on 90 grains of Tripple 7. But also as is said, i dont think they are Idaho compliant.
What I do have to say is try with less powder and work it up from there. I have met a few people who are adamant on using as much powder and magnum loading as they can get away with.
In my humble opinion, there is no need, and thats not what muzzleloaders are meant to be.
I started with 70 grains of powder and could group amazingly at 100 yards. Then I started taking it up 10 grains at a time after I felt like I was comfortable with how it shot.
When I went from 90 to 100 grains, my groups opened up a little, and then a little more when i went to 110 grains. So I settled on 90. And with those 330 grain harvesters have great results.
1 passthrough on a small bull at 155 yards, 1 passthrough on a big bodied bull at 135, both broadside.
Last years bull had a sharp quartering away shot, entered behind the rib cage on one side, and exited through the shoulder on the other side, he didnt go far and the shoulder still didnt stop the passthrough.
My point being with that is that it does not take a magnum load of powder to be powerfull against that size of an animal.
