I agree with @Pesty3782. Try the Altaros before writing off the whole project. Even if you don't want to use/buy Altaros, for whatever reason, at least you will know if the barrel was capable of accuracy from anything at all. I know that I had really wanted to use two different slug brands in a gun that hated all of both their offerings, and going outside of what I thought that I could make work, lead to quick success. So I might not have ended up using what I wanted to use, but got the accuracy I was really after anyway. At least you would be able to tell AoA, or the buyer of your gun, that the slug barrel can shoot accurately with something.






