My son has a Handi-Rifle in 45/70 which seems to love to destroy scopes.
My Marlin 1895 has eaten a few of them also, at least until I started using fixed power glass. I'm presently using a Simmons 4x32 pro hunter shotgun scope and it is doing great.
We shoot 425 gr Beartooth Pile Driver Jr's with a case full of H Varget and the recoil is sharp.I'm looking at the Weaver K4, but would like some suggestions. Thanks Glenn

If you can lay your hands on a later example of the old steel tubes-they're bomb proof-either K2.5 or K4.

Thanks stalkingbear, I had a 1.5x4.5 weaver on my Ithaca 30/06 back in the early 70's but it got ruined in a house fire, I then replaced it with a 2.5x7 Weaver and it lasted for many years.
I ruined the lense's by cleaning them improperly, a costly lesson.
I now have a Weaver V-24 on one of my Savage 223 rifle's and it is great also.
I replaced the weaver v2.5x7 with a Simmons 3x9 and although not great it does what I need it to do. I also have a Simmons 3x9 on my Savage 270 and it also does just fine.
But I know that neither has the recoil of a heavy loaded 45/70 in a single shot rifle.

When recoil destroys a scope, you have a cheap scope.

I bought a 1.5x4.5 bushnell banner and put it on my 45-70 banner. They were recommended by the guys on GreybeardOutdoors. Worked so good I bought another for my .50 cal mL. So far so good.

A fixed-power Leupold would probably be my first choice. Leupold has a great reputation for customer service so I would start there. Weaver is now owned by Meade and I no longer trust their optics.

Another out of the box idea is to go to Ebay and pick one of the older Redfields that were made in Denver (not the "new" Redfield company). I have two that are still going strong.