Thread: Tikka 223 not grouping after shortening

Hey Team,

Had a Tikka T3 223 1:12 shortened down to 18 inches. It used to shoot Belmont 55gr soft point just under and up to MOA depending on shooter. Obviously removed from stock and scope taken off before work done. Crown looks tidy as well.
Took to range today and it’s double grouping or not grouping at all.
The scope had rings left on when taken off so I just torqued back in same spot.
Stock was torqued to 35 inch/LB and then to 40 in case it was that. I’ve taken it apart again and there’s nothing touching barrel and aluminium lug isn’t loose or has any damage.
Tried some PPU ammo as well and that’s doing exactly the same.
I wouldn’t normally ask, but I know of so many that have been shortened for handy quad or ute guns that have shot fine after shortening and using Belmont. Also had a mate shoot it as well.
Any advice would be great.