Webley revolvers are pretty great. But most of them are antiques. And antiques are expensive.
I just thought it would be humorous the recommend you get one of the biggest handguns ever produced when you were mostly talking about getting smaller caliber guns.
Also, lesson 3: holy fucking SHIT hammering a hem is easier when you use a rubber mallet as an anvil.
It's also much easier when you heat the metal prior to hammering it

. Take your time with the metal dragon. Gotta treat the metal like a Swedish lady. Forceful, yet gentle.