I am shooting great plains bullets, they seem to fit loosely in barrel over the charge, if I hold gun down and shake the bullet actually comes off charge. I am not very comfortable hunting this way, any suggestions would be appreciated, also any suggestions for a different bullet that does not do this would be great. I am shooting a lyman .54 deerstalker. Thanks
I suppose you got the right size bullets, if so your barrel may be a little oversize. Try a round ball, they make a couple of different sizes for 54 cal and if it's loose you can just use a little thicker patch to tighten it up.
those investarm barrels are often belled at the bottom towards the breech. Theres a 2 thousandths difference in my dads starting from the muzzle at .500 and then once it hits 2" above the breech plug, it flares out to .502 making for lead conicals an impossible fit.
You may be much better off and safer with a powerbelt or as springfreak says, a patched round ball. I'd suggest .018" pillow ticking a .530" round ball.
Paper patch the conical. One wrap would be just right probably. I don't like dealing with conical bullets because un-wrapped they can move off the charge. I have never had a paper patched conical move though and they are just as accurate.
I have 1/28 twist that I shoot sabot xtp's in and I don't need the weight of a heavy conical for deer. No one offers a soft lead .452 bullet with a large flat point in the 300 grain weights or that's probably what I would shoot in a sabot.
My other rifles are ball guns and I don't think I need anything more than that for deer either. A .54 ball hits pretty hard and has a decent trajectory. The .50 is pretty darn flat and works well too. The .58 ball has a bit higher mid-range trajectory than I care for with a 100 grain charge. Of course all balls are subject to a bit of wind drift.
I always felt that there should be something that could be applied to the outside of a conical that would prevent slippage in loose bores. The heavy goop on the PA conical probably is as close to anything that might work well. Paper patch works wonderful though. The paper grips the barrel but the pure lead to steel doesn't.
Someone could make a real thin sabot to hold the heavy bullets used for paper patching and it would probably work great. At any rate try some paper patching. If you don't know how PM me.