I've mounted 3 scopes on Mosin's so far, all of 'em removeable receiver side mounts. One was a WWII era replica thumbscrew mount the other two modern SVD/AKM lever types. All three reqiuired some 'gunsmithing' (squaring-up, drilling, tapping, inleting the stock, etc) and custom turn down bolt bodies. Pricey. With the scope about 200-300 bucks. Stay away from the 40 dollar ATI 'kit'.. pure crud. Modern scopes and mounts here:
Kalinka Optics Another way to go is with the 'scout mount' setup. Works real well particularly on carbines like the M44 and M38. This puts the scope on the Mosin's rear sight leaf via a weaver rail replacement for the 'stock' rear sight leaf. No gunsmithing. Requires an 'EER' style scope. Better than the ATI crap, but not as versitle or dependable as the pricey receiver mounts especially like the long guns like your 91/30.
BTW, yer 91/30 will likely become a tack driver with a decent scope and a good recevier side mount... and you can still use the iorn sights as well as dismount and mount the scope in under 5 seconds.. and it holds zero, all without a single tool. Money well spent IMHO.
You can get lead core surplus heay ball Hungarian here for about 32 bucks per 440 round can:
Aim Surplus Shoot a bunch!!
