I shot the 1.025 round balls in my blunderbuss this Holiday. Over 140 grains of FFg. They worked well. I did not chrono the load but it seemed like they would definitely be lethal at under 40 yards. I was wearing a watchman's cloak (heavy wool cape) when I was shooting and the first shot pushed me pretty hard, hard enough I needed to take a step back, well I was in tall grass and somehow I ended up stepping onto the cape itself, which pulled me down, rather than damaging the cape I just sort of went with it and ended up falling down backwards which made it seem the recoil literally knocked me over. It was pretty funny. The audience seemed to like it. hahaha

We also shot 4 ounces of number 8 shot over 140 grains of black powder. At about 18 yards I would say any bird in a 6 foot diameter circle would be dead. The pattern was dense out to that distance.

This 4 gauge Blunderbuss is a bucket of fun. Everyone home should have one of these!