Scope Mount Problem w/ Benjamin Prowler .22

[wfodawg]

Hi All

New member here looking for some advice. I’m a long time shooter and firearms enthusiast but brand new to the airgun world. I recently purchased a Benjamin Prowler .22 and decided to update the scope to a Mantis 3x9x40 AO scope. I ordered a UTG accushot one piece mount which stated it fits an 11 mm dovetail. However when I got the mount I discovered the stop pin wouldn’t line up with the hole in the top of the receiver. The pin was off center. Can someone please confirm what the dovetail size is on the Prowler and maybe give me some advice on what one or two piece mounts with a stop pin that would fit? Thanks

Gene

 

[marflow]

the sad news is all dovetails are not created equal and that one from the pictures is fairly small but at PA it states 11 mm 

so what is off center , the mount down set or the hole on the tube 

so is the mount level with the rifle when mounted, that will tell you if the dovetail was formed correctly 

now you have to figure out is the hole in the tube centered and if the mounting set screw is center 

we all have a box full of things that didn't quite work out and most aren't worth sending back 

you need to break out the tools and do some measuring and go from there or start shopping for another mount or ring setup 

but first you have to see if the dovetail was placed properly 

 

[Gerry52]

"Hole in the TUBE"?

 

[ronmcc4]

"Hole in the TUBE"?

I'm guessing he means the hole for the stop pin.

 

[wfodawg]

Yes I meant the hole in the receiver for the stop pin. I made some measurements with my calipers and as near as I can tell the dovetail measured around 11.83 mm or roughly .470 inches. The stop hole in the receiver looks centered. I should also let you know that the Center Point mount that came with the gun and scope has a stop pin/screw that fits just fine. I can’t use these mounts because the objective on the Mantis 3x9x40 scope I have is too large. So it seems to me that the problem is with the Leapers mount having a slightly offset stop pin.

I know I need to order a new mount but I just want to make sure whatever I order will fit. 

 

[Eddie_E]

I have been using a one piece mount without the stop pin and it has not moved in thousands of shots. Having 4 lower bolts plus the extra surface area seems to do the trick. With normal two piece you must have a stop pin though.