While reloading with a speed loader the cylinder refused to lock closed. I forced it to no avail and had to reload using different speed loader to finish the course. Afterwards I discovered one of the cartridges from the first loader was defective---no cannelure and the rim was deformed from being forced into the frame where it didn't want to go. I don't remember how noticeable the mating surfaces between the crane and frame were, but they are noticeable now although the surfaces mate precisely. I see no damage to the frame where the cartridge rim would have deformed, or the crane it's self. The cylinder still locks up tight as a drum. The revolver shoots fine, is accurate, and looks to be OK, but it worries me that I might have damaged something(you know how intense combat courses are!) How can I tell for sure if everything is on the up and up?