Thread: Supressors - Temperature vs grouping?

Originally Posted by No.3

Could well be a can fitment issue. There should be clearance with overbarrels at the rear of the can between the barrel and the rear bush. If there isn't sufficient clearance the barrel can touch and stuff the works up.

This ^

The rear bush is probably the issue. Take it off the suppressor and shoot some test groups.
I have experienced the rear bush issues with two rifles/suppressors now.
I think that the Bush either needs to be tight or quite clear of the barrel so that you don't get partial contact which increases with temperature.