If by 'scoped' you meen 'zero'd' then you have a couple of potential problems.
I will make some assumptions though.
1. you can shoot straight, and you are taking the zeroing shots off a steady support .
2. you are using the same ammo.
3.Same distance of zeroing shots.
So, assuming all the above are taken out of the equation.
1. Something is loose..............Scope on mounts, mounts on gun, gun on woodwork. Recheck all bolts.
2. Barrel is a free floating design, that is not free floating.ie touching woodwork.
3.Scope is FUBAR'd
4. Clipping moderator (if fitted)
PLease don