question about gun metals
ive been making lots of replacement parts for my guns lately, nothing to critical but stuff like beveled followers and so on. id like to start making things like breechplugs, caplock nipples, shotgun chokes, firing pins etc. but i dont exactly have the means (or experiance for that matter) to properly case harden or stress relieve. so, what kind of materials can i use that require no special hardening after turning/milling/cutting? i can basically get anything since im apprenticing in a tool and die shop. i have been using various alu alloys, high speed steel blanks, drill rod, 416 and 440 stainless with good results. also, what are some materials that i should avoid.