HW80K target shooting session recently, I just thought "This is bloody uncomfortable".

The 2 piece scope mounts had marched back toward me as far as they could go and the scope itself had slithered within the mounts as far back as it could go. Explanation for crap shooting and 'a pain in the neck'.

Tighten and crimp the scope tube? No. Put some crayon marks on and check them each session.