My 7.62x39 Howa Mini in light weight barrel shoot around 2 MOA when I put in a Boyd's stock without bedding and it was load sensitive, with good load, it shrinks group by 1/2. Heavy barrel should do better. I know the stock is loose and bedding will help. Have it bedded this winter but I haven't shot it yet. I had a Zastava 7.62x39 Mini "Mauser" offered by Remington, in standard barrel, it shoots 1 MOA if I do my part with good ammo. The Remington factory stock is made by Boyds and factory bedding is some kind of RTV at barrel shank, it works! Zastava mini "Mauser" is not a real mauser action and extractor is weak. Chipped only after 50 or so rounds steel case, I had it fixed under warranty and sold the rifle. I also have a 7.62x39 that I built on a Turk mauser action, the issue is the extractor does not hold case tight while 7.62x39 base diameter is smaller. Shoot OK but not as well as my 308s. Honestly, since I reload now, there really isn't much reason to mess with a 7.62x39 bolt gun if looking for accuracy. 7.62x39 is fun and cheap if steel case, ignore the "flyers", "accuracy" is not too hateful with Bears or Golden Tiger!