Mark - I'm certain your '95 is already set up for a scope - that is, it is drilled and tapped for a scope base. I don't like the scout mounts, I want a scope to come to my eye relief and filed of vision quickly and the scout mounted scopes don't do that for me.
I have scoped a couple of Winchester AE big bores with the Bushnell Banner 1.5-4.5x Dawn to Dusk scopes and they work absolutely great on my rifle caliber levers. These are shorter than the usual scopes and are quite rugged - meant for the recoil of shotguns and heavy rifles. Should work very well on a 357 lever rifle.
BTW - you mentioned that your rifle gets great groups but not where you can adjust your sights to. Are the groups too low??? If so, Marlin or Brownells should have the front sight blade you need. I think a call to Marlin would help and Brownells has their catalog on line. HTH and Good Luck. Mikey.