As stated ......setting the barrel back a few thousandths is the best thing to do but not required if ya don't roll your own. Bulk surplus 7.62x54R is pretty much same price as good .22 rimfire ammo these days when ya find a good source.
ATS makes a great drop in stock, easily glass bedded with accraglass from brownells and here is a link to build a better / best scope mount. I honeycombed / drilled my angle iron to reduce weight & mass but you'll get the idea at the site link below.......
http://www3.sympatico.ca/shooters/ScopeMount.htm
It won't be the NRA gun of the year unless they start a ugly division but it hits, it's cheap and it's a proven light recoiling rig that really can be assembled in a few days of garage work with common handtools.
Mines a black stock with rustolium gun metal grey finish on the metal and the old scope.....
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Hope that helps ya a bit...I really enjoy mine and have taken a mulie and some whitetails with it over the years.
Stay Safe !
$110 for a never fired 7.62 NATO rifle which came complete with a ten round mag and all the cosmoline you could want. I picked up a 'sporter' style stock from some outfit in Arkansas I think, dunked the whole mess in Simple Green, soaked it for a day or two, and then elbow greased the hell out of it.
It turned into a right nice shooter. I topped it off with a mount I found someplace else on the 'net and a crappy Tasco scope.
I can ring cast iron skillets out to 400 yards or so with it. Not bad for a total investment of less than $250.00. Not bad at all.
Like I said; wish I'd bought six of 'em.
L