Barrel lockup has never been a problem for me on any of my break barrel rifles.
The usual problem with break barrel air rifles is the recoil to the rear when the piston is released and to the front when the piston stops suddenly.
Not all scopes will survive the recoil in both directions.

Get a quality, air rifle rated scope and get it mounted solidly.

STRwilson is right, PCP rifles don't recoil like a break barrel rifle but it's a different project and you're trying to use what you have in hand.

I only have one PCP but I won't be selling any of my several break barrel rifles..

Don't get the cheapest Air Rifle scope you find and get a good mount.


"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen