I have absolutely no experience with metallurgy, welding, etc so this question might be incredibly stupid. If so, pardon my ignorance.
I'm making a custom firearm that uses many off-the-shelf components including an AR10 barrel/barrel extension. The problem is, the way the bolt carrier is designed doesn't allow for a standard AR10 bolt. I need to rotate the cam slot by 90 degrees and move it back a smidge so it doesn't interfere with the extractor.
At first I was hoping to find a manufacturing who would sell me unfinished AR10 bolts (every operation except machining the cam pin hole), but so far I've had no luck on that end. I've been racking my brain trying to think of other solutions and thought of filling the existing hole with weld then machining the cam pin hole where it needs to be. This obviously would destroy the heat treatment.
Would I be able to get the bolt re-heat-treated while keeping dimensions within operational margins, or would the process screw up things like headspace?
I've put a lot of effort into this firearm, and it's going to kill me if I hit a dead end because of the bolt.