I bought a new T3 SS in .260 before the Creedmoor Craze and was pretty jacked because of the Tikka's cred but it shot ho-hum.
Did some checking and found some contact between stock and barrel. Fixed it.
Noticed some scarring on the aluminum recoil lug. Installed a titanium aftermarket lug from Lumleys.
Found that my mag length wouldn't let me seat VLD bullets very close to the lands. Modified the bolt stop and the magazine to allow a longer OAL.
And now it shoots like I expected. Maybe even better.