I own and shoot 3 zastava mausers, one a whitworth, one a mark x and one a Remington 798, all have benefitted greatly from simply polishing the outside of the bolt with a dremel and a felt wheel with PRECIOUS METAL HIGH GLOSS polish, nothing more aggressive than that should be necessary, avoid the front and back of any lugs, but the sides (top and bottom) can be polished the same way. I will say that again to reiterate, DO NOT polish the locking surfaces of ANY lugs, this will affect your headspace to some extent, you are removing metal. you can polish the rails, both the underside to smooth cartridge feeding, and the top where the lugs ride, you can polish the shell follower in the magazine, this is a big one, if this is smooth and the bottom of your bolt are smooth, you will notice an immediate difference. people discount these guns as being rough and clunky, but they can be really slick and nice, all of mine are, especially that Whitworth!
Cheers
