In theory, maybe not, since the bolt action and especially the SKS are not sniper weapons.
In practice, the Mosin seems to be, so there's an argument for the bolt ammo, especially as most RL Mosins fire the same 7.62x54R ammo as the SVD, and that has both the extra damage and sniper scaling for accuracy.
A more interesting question is where does the line go for sniper accuracy? There are a number of scoped rifles, some even bolt-action, that do not have it (Scoped Hunting Rifle, QBU, Sporting Rifle, even the SVD and the fictional Walther knock-offs), while the VSS, a glorified assault rifle, does.