An amigo is trying to sell me a M357 lately and Im starting to warm up to the idea but. I don't know any thing about them. I need a quick course of pointers of what to look for on these guns. Good years bad years(probably in ser#s)changes or options ?Problamatic for handloading ? A must for me. Also just plain opinions on the gun as a whole. A slice of paradise or a pain in the YAHA kind of thing.