1st the breech, I tapped the barrel (cut off a Colt 51'), and screwed a bolt in about 1 inch, then removed the head and brazed about 1/4 of brass over it. Then cleaned it off and soldered on the finial. Now, the shoot. 5 grains (fff Goex), at 5 yards. I tied the cannon down, which was good cause it tended to flip over when shot. Aimed 'er as good as I could while laying on my back in the gravel and lit her off. 1st shot skimmed the top of the log knocking off some bark. The next was on the paper and the last 2 were in the bull !!! TOO COOL