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9 people found this helpful
Crosman 459MT mounts work, but must be modified to stop scope wobble on my 1322
on November 19, 2015
As several other reviewers have mentioned, the mounts and the added weight of the scope cause the barrel to move. This is not a great design. It is easily fixable, but I'm a firm believer that you shouldn't have to "fix" something that was specifically designed for this purpose. That's called bad design. It is probably because they designed these to work on multiple pellet guns, so they had to loosen tolerances. I understand that, but it seems like they should have built in "adjustments" to make the design work as intended.
I installed these on a 1322 and mounted a rather heavy scope with integrated laser and LED reticle. Everything worked well, but there was clearly "slop" between the barrel and the rest of the pistol caused by the scope/mounts. I read several reviews somewhere, as well as here on Amazon, about putting tape or other "spacers" under the mounts to "stop the slop". This works. Again, bad design/implementation by Crosman, but at least there is an easy solution.
For my particular situation, I first used small pieces of rubber eraser. That didn't work. They rubber flexed to much and slid out of place. Then, when I made the rubber shims thicker, the mounts chopped them in half. Rubber eraser was a fail.
I then cut off small slices (3/16"x1/2") of a point-and-shoot camera strap. It was the typical nylon webbing strap most old 35 mm camera's had to dangle the camera around your neck. There were several other webbing straps on all kinds of devices that I thought about using, but since I never use my old camera (Canon 35mm waterproof) any more, it's strap got cannibalized.
That said, after I cut off 4 shims from each side of the strap, I just melted off the end of the strap with a lighter and can't really notice that it was shortened. There was plenty of extra, unused strap length. Cutting off less than an inch of it didn't really make a different.
I took the "shims", but places them under the feet of each mount. Tightened them down (carefully, since other users have made me paranoid about the screw threads stripping). The webbing shims worked perfectly. Closed the space under the mount. No more wobbly scope.
It's been rock solid for months now. Stays zeroed on the scope and laser.