Okay, I'd like some honest opinions on some machine work that I'm going to performing in the near future. I didn't get a chance over the Christmas weekend to get any machine work done.
Basically I will be opening up an AK 7.62 bolt to fit a .45ACP case. The easiest method for this is to use a 0.500" end mill and just hog it out to the right depth. The bolt in the pic is screwed up because I trusted the marking on the plastic sleeve rather than measuring the actual tool. I grabbed an end mill that was marked 1/2" on the sleeve and turned out to be 17/32". Consequently, the bolt cup is 0.030" too big now. Nobody to blame but myself...
I'm looking for suggestions for reshaping the extractor to line up with the new bolt cup.
I have a dremel grinding stone that just happens to be 1/2" in diameter and thin enough to fit into the slot. Any suggestions on what other tooling would be available for this cut. Maybe a 1/2" x1/16" keyseat cutter? I can get them in carbide or TiN coated, so working on the heat treated part isn't an issue. It may be easier to anneal the extractor, machine the slot with a HS cutter (CHEAP!!!), and re-heat treat it.
This pic shows the cup milled to an incorrect depth. The cup is about 0.030" too deep.
For the firing pin, I'm just going to trim it down a bunch. Right now, without any intervention, the firing pin sticks through far enough to possibly slam fire a .45 cartridge. The pic shows the pin pushed all the way forward into the bolt. I will have to cut at least half of the exposed tip off to prevent it from punching through the primers.
BTW, the camera is a Nikon Coolpix 5200. I bought it as a gift for myself this afternoon. The pic was taken at just under 2 inches away from the part. Plan on seeing more pics like this as the machine work gets further along...