Check out what Boyds offers for Mosin.
I got a stock from them for a 98k Mauser. Found an all numbers match...ALL, but some Bubba back in the 60s drilled scope mounts into it..thus ruining the collector value. Since it was ruined..I took the all intact original stock off, replaced it with a Boyds, bedded it, reblued the whole thing and installed a Timney.
After HOURS AND HOURS of work switching back and forth with Hoppes number 9 and Barnes CR-1...I finally got all the layers of copper and crud out of the bore (clearly, hadnt been cleaned in decades, Thank God they didnt shoot corrosive ammo out of it) to reveal a almost pristine shiny bore.
I put a Leupold VX3i and it...and its a tack driver!
I have an a orginal Mosin 91/30 with correct PU scope...its a tack driver too, but the trigger is just this side of horribad, and the comb of the stock leaves much to desired...but I refuse to be that Bubba and screw up a piece of history that no doubt mowed down a few nazis.
Good ammo is very hard to get...plenty of spam can stuff still to be found...all corrosive, and none Id call match grade.
PPU makes decent brass for these, but bullet selection is a little light. Mine is a 311 bore.