I have a BSA Supersport with gas ram. The gun itself is very accurate, the firing cycle is really nice, but apparently the recoil is heavy. I don't notice the recoil, but the gun doesn't shoot well with a scope. Open sights and the gun is terrific. Today I took the scope off and I noticed the hole for the scope ring stop between the dovetail grooves looks like it has been peened by the stop pin in the mount. I'm using a one piece mount and I'm pretty tight on the mounting screws but there is still enough force to make that pin distort the hedge of the hole in the tube. I'm happy enough with the gun and open sights to keep it unscoped, but I wondered if anyone had any similar experience and advice.
Scope mounting issue
- Thread starter 22junkie
- Start date
That 'damage' has been recorded before on lots of different rifles (diff. makes of rifles).
The stop pin hole becomes elongated over time. Possible causes (off the top of my head
) are: stop pin being smaller than the retaining hole on the mount; overly heavy scope or scope held or mounted in a 'too high' position maybe owing to a large Obj. Lens.
On the plus side
yer scope's done well to put up with that treatment !
The stop pin hole becomes elongated over time. Possible causes (off the top of my head
) are: stop pin being smaller than the retaining hole on the mount; overly heavy scope or scope held or mounted in a 'too high' position maybe owing to a large Obj. Lens.On the plus side
yer scope's done well to put up with that treatment !
Upvote 0
Been there, done that, even with my tuned R9s..........
Recently in an attempt to reduce the stop pin hole deformation I started applying some valve grinding compound in the dovetail grooves before clamping the mounts to the receiver and this has indeed stopped scope mount creep..........
Look at this pic and you can see a bit of compound "squeeze out" at the base............
One of the things I like about that compound is the fact that it's "grease with grit" so the dovetail groves in the steel receiver are "rust proofed" where clamped. Before using the compound I would completely degrease the dovetails and scope mount clamps attempting to minimize slippage, however the degreased surfaces also invited rust and corrosion at the base clamp.
Recently in an attempt to reduce the stop pin hole deformation I started applying some valve grinding compound in the dovetail grooves before clamping the mounts to the receiver and this has indeed stopped scope mount creep..........
Look at this pic and you can see a bit of compound "squeeze out" at the base............
One of the things I like about that compound is the fact that it's "grease with grit" so the dovetail groves in the steel receiver are "rust proofed" where clamped. Before using the compound I would completely degrease the dovetails and scope mount clamps attempting to minimize slippage, however the degreased surfaces also invited rust and corrosion at the base clamp.
Upvote 0