.22 hornet

[angrybear]

Try using 13 grains of black powder a lubed cardboard wad and a 22 20
Grain gamo lead ball no case extraction sounds like a Winchester 300
Mag lots of smoke and a ball travelling at 4800 fps

But I doubt it's very accurate

Your cases are sticking because the loads you're using are deforming them, , unless you're trying for a Darwin award, use a lighter load.