303Guy, , a few years ago I was playing around with my SMLE trying to patch for it. I was using a 308 bullet and cigarette papers. I got interested in other things and left it. I'm not convinced I was using the right powder and I am certain the paper I was using wasn't the best choice either. If I get around to doing it again, I'm going to try some 9 lb. paper and see what happens. If you work out the right combination, post it here and I'll see if it shoots in mine. Two wraps of 15 lb. paper gives my about 0.008". I figure the 9 lb paper should take up just about the right amount of room to allow the 308 bullet.