no4 sporter butt fitment

[xa-coupe]

Today I took the no4 7.62 out with some chinese factory ammo that has served me well in the past. Same thing as my handloads.. shoots a nice tight group of 3 or so and then starts stringing vertically.
During cleaning I noted that there was movement somewhere in the butt. After a while I found it roatated slightly, no other movement. There is also a gap on one side of where the butt goes into the socket and not the other.


When I got home I took the butt off and the started to look at why it was moving. My first thought was that I didn't do it up tight enough... it was tight .. very tight. So I took it off and then pushed the butt into the socket and it fitted fine.... fine until I did it up and then the gap appeared and it rotated.

The butt is a sportco effort so it should be as good as it gets for a mass production butt.



Where do I go from here?
I wonder if the hole the butt screw goes into is straight. In the 5 minutes I spent with it's donor rifle it seemed to fit ok, there was certainly no movement.
I thought about trying to pack it out but if it fits okay without doing the butt screw up I don't know how this will help.

Any ideas? I really don't want to put the original back on as this fits me a lot better and works a lot better with the scope.

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