I do have a couple Mosin Nagants (currently a M91, M91/30, and M38), and have owned a variety of them. The ones I own do have pretty decent bores, but to be honest I am not much of a target shooter, usually just plinking with a couple different milsurps at a time. The problem with the Mosin Nagants is they really aren't that good a rifle system. The charger system is garbage, the bolt is difficult to operate in comparison to pretty much every other bolt action in existence, and the rifles often get rimlock as the interrupter doesn't work the way it should in theory.
Personally I love the M95 action and think it is a fun different way to shoot. The problem with it is they are a odd caliber to try and shoot effectively (all my M95s are in 8x50r at the moment and that is a hard round to duplicate or even get the rifle to shoot without keyholing).
Recently I got a M95 drill rifle which can't be shot, so I figure why not make it shootable, and put it in a caliber that is at the moment common and cheap as well as being able to function and fit in the rifle without modification other than the barrel being changed out. A good way to make a likely fun range rifle which is different (mannlicher clips, common round, straight pull), and a way for me to put that spare receiver to use. Otherwise the drill rifle will likely just end up hanging on my wall and taking up space, which I am not a fan of.