I went with a cheap (NcStar 2-7x32 pistol) scope when I scoped my 91/30. After ~60 rounds the scope and mount would not hold zero
Now I have an S&K mount and a Bushnell 2-6x32 trophy xlt pistol scope. That combo has held zero for 1000+ rounds. That combo is not cheap (~$275) is more than my mosin is worth, but I have old eyes and LOTS of 7.62x54 ammo to shoot.