Take a look at the Burris scopes. I have a Fullfield 2, 1.75-5X on my 45/70, and that scope gets great light. I got the scope, with signature series rings and base, for like 280.00 dollars. Strong enough for the recoil, a fairly light rig too. Good luck.
Leupold makes a 1X4 shotgun scope which comes pre-paralax adjusted for 75 yards right from the factory. I have this scope installed on a Winchester 1300 and I love it. With there " Lifetime" warranty, you can' t go wrong with a Leupold!!