A GOOD 91/30 with GOOD ammo is more accurate in most cases than a Dragunov. By "good", I mean the bore is in great condition and the rifle itself is in great condition. The Dragunov itself was not meant to be pinpoint precise. Soviet doctrine in the "over the Berlin Wall" push that never came was to use snipers with front line units to take out machine gun crews, artllery spotters, officers, crew-served weapons crews, etc. That would help pave the advance of their infantry. For that, they wanted semi-auto fire and, so, sacrificed a bit of accuracy they could have had with a bolt action. Most of the "Dragunovs" on the market these days are not real Dragunovs. They're actually Romanian sniper rifles cobbled together on an RPK reciever. Dragunovs have their own receiver. The Romanians, I understand, have some problems with heavier grain weight ammo. Some, so I've read, beat themselves to death with heavy grain weights from Wolf (like 200 grain soft point) and some heavy match loads. A Mosin will fire any rifle-grade 7.62x54 ammo, though some tend to avoid the stuff called "heavy ball" (marked with yellow or silver-over-yellow tips.) Also avoid red tips like the plague (exploding ammo and very unstable) and belted machine gun ammo (loaded VERY hot.) Anyway, a good Mosin 91/30 will outshoot most Dragunovs. I can't speak for a M38 because it's a carbine and loses a bit of power that the longer barrel of the 91/30 would make use of. But the M38, from what I've read, is still an accurate rifle out to a few hundred meters.
Scoping it isn't easy. In fact, the only real option is a "scout mount" which clamps to the rear sight and uses a long eye relief (pistol) scope. If you're looking for a weapon to scope easy, this isn't it. I shoot my 91/30 with iron sights and it's dead on. I love iron sights, though. More fun. I keep my 91/30 original and that's the way I like it.
But look at it this way. A REAL Dragunov would run you a few thousand at least. The Romanian sniper rifle runs around $750 to $900. The Mosin is what, $100? The ammo is cheap and plentiful. And it's fun. But most, if not all of it, is corrosive, so be prepared to clean up after corrosive ammo. If not, your bore will be pitted in no time flat.
