There was an old thread on rimfire central about dissassembly of the model 93 bolt and polishing of the cam faces.

Thread link here http://www.rimfirecentral.com/forums...ad.php?t=78552

Photo of polished bolt parts from that thread


I started working on my bolt this evening to make the notch for the cocking pin shallower to quiet it down some. Right now, I need to re-evaluate the accuracy since I replaced the one (too short) action screw and hopefully I can make the operation more stealthy.