Originally Posted by Hunterdan
The longer barrel isn't going to make a noticeable difference ib accuracy. The marlin barrel is also rather thick compared to some so its almost like a heavy barrel. If you don't like the dovetail mounts you can get an adapter to go to a better and stronger mount. I never had an issue with the scope moving or creeping with the dovetail mounts on any of my guns, 22 or airgun.
My problem with dovetail mounts is removing the scope. With a weaver mount the mounting screw sits in a slot. When you remove the scope to clean or repair the gun the scope goes right back in the same place.
With a dovetail mount you have to mark the gun or guesstimate where the scope was located. Neither method works as well as a plain old weaver mount.
I like being able to remove the scope. So I can clean or repair my gun in a jiffy. When I put the scope back on the gun 99% of the time the scope is still dead on with weaver mounts.