Yeah, I read 22 grains and went "GULP". The frame of the ROA IS beefier than a Blackhawk, but I don't know about "strength". No matter, I have absolutely NO plans to fire it with any smokeless power. A full charge of 3F 777 is enough to get my 220 grain RN to pull and start interfering with the forcing cone after 3 rounds. I really have little use for THAT charge. I generally shoot 30 grains of Pyrodex P under a RB with cornmeal filler. It's accurate and so long as it whacks my steel gong, I'm happy.