...If you follow published loads it seems to work fine.
It's not the published loads of smokeless that are the problem, Dale, it's the use of a wad or other material that holds that smokeless powder away from the bullet base, creating an air gap.
No air gap, no problems. Thus the comments about Dacron filler, Floral Foam, Cream of Wheat, etc. They fully fill that gap between powder and bullet.
I have shot many round of .45-70 with smokeless powder (not in my Shiloh, though!) and more than a couple in .38-55 without any problems, either.
Ed
