While we're on the subject, what surplus ammo shoots well out of a 91/30?
7.62x54r.net has data that show that heavy ball (yellow tip) ammo works well for the 91/30's barrel length. I have a few hundred rounds of Bulgarian heavy ball and they seem to shoot OK but the recoil sucks. I haven't tried any of the better stuff like Czech light ball though.
Not that I really care about accuracy too much; I mostly got the Nagant because it was cheap and I wanted to make things asplode.
I actually like those WWB that I found in Colorado a while back. In fact I still have 2 boxes of it. Other than that, I load my own.