I would first like to say Hi and sorry in advance if this is posted in the wrong area. I created an account just to address this problem that has been giving me a hard time. I just bought my first pellet gun a Gamo Big Cat 1250 just for some fun target practice. The problem I am facing is that whenever I mount the scope no matter what I do, the cross hairs go crooked after the 2nd shot. I have tried just about everything to fix this problem. I used locktite on all the screws, I applied even pressure when tightening down the rings, I even tried putting tape around the scope thinking more friction might stop it from sliding but nothing has worked yet. I know buying a scope would be an easy fix and most likely your first recommendation. This gun cost me 120 bucks and for a decent scope I would be spending the same amount, if not more and to me that seems illogical. Why would I put a 200 dollar scope on a 120 dollar pellet gun? Just doesn't seem necessary but correct me if I am wrong. I do love the scope the gun came with, it suites my needs perfectly, but its completely useless if it can't stay in alignment. Is there something I am doing wrong? Is this just a faulty piece of equipment? It was such a big let down to finally get a new toy and I can't even get it to work as advertised. I am new to this pellet gun world but I have plenty of experience with real guns, but haven't mounted a scope before. I watched videos and followed the directions to a T, yet the scope seems to slip in the rings no matter what I do. HELP PLEASE.
Gamo Big Cat 1250 Scope mounting issue
- Thread starter tylerK
- Start date
Well I usually buy better rings and keep a stock of them around, but there are a few things I would try first. Since all rings do is clamp down on a pipe aka a scope. Are the rings closing down when you tighten the screws? I have never done this but I think you could take the rings off and run them back and forth on a piece of sandpaper to take a few thousands off "if" the rings go together when they are tight? Of course cleaning the inside of the rings is always good. And I have used the cloth electrical tape inside scope rings.
If when you mount the scope and there is still a gap at the end of the rings, sanding the rings mating surfaces wont help at all. Some of my rings are double rings with 4 screws and the wider surface does help with a scope slipping.
And you said nothing about the mount itself moving so that part must be ok? And always put a pencil mark on the scope against the rings so you can keep an eye on that?
Edit: looking at the 1250 combo rifle and scope set. It looks like the mount that comes with it should do the trick? I guess I would clean all surfaces with alcohol and see if that helps?
If when you mount the scope and there is still a gap at the end of the rings, sanding the rings mating surfaces wont help at all. Some of my rings are double rings with 4 screws and the wider surface does help with a scope slipping.
And you said nothing about the mount itself moving so that part must be ok? And always put a pencil mark on the scope against the rings so you can keep an eye on that?
Edit: looking at the 1250 combo rifle and scope set. It looks like the mount that comes with it should do the trick? I guess I would clean all surfaces with alcohol and see if that helps?
Upvote 0
The scope rings do have a little gap on both sides and bolt down with two screws on each side of the rings, and no matter how much I try to tighten it down they won't clamp all the way down. I could tighten one side all the way down but then the other side has a bigger gap. The rings are definitely closing when I tighten the screws and I am almost afraid I damaged the scope because I was tightening them down so hard out of frustration. The scope mount itself doesn't move at all, but the scope is sliding in the rings. I am just about to try to use the strongest glue I can find and just super glue everything into place, but I am honestly not sure if that would work. I know this gun is louder and has some kick but this is just ridiculous.
Upvote 0
I shouldn't even show you this but over the years I have lapped scope rings in many rifles. You can see that even good rings don't always seat solid against a scope. And you can see where the color is coming off the rings and they do seat better after but most don't do it for that reason. Its to line up the two piece rings
.
.
Upvote 0