I'd pull the magazine, follower, & spring torque everything to spec and go shoot. So what else have you tried besides switching scopes? I doubt it's a barrel problem throwing groups that large.
Even though I want to try an SS, Leupold scopes are still a good value especially the VX2 3-9X40. 3200 series Bushnell's aren't horrible either as long as you don't twist the turrets a lot. Not everyone is a turret twister nor do they have to be to shoot well and be successful.
