Alright Y'all i'm new to this forum I haven't posted until this thread I have just been reading threads and posts to try and gain knowledge in shooting and long range hunting. I have a problem though that I keep dumping money into and that is my tikka .338 win mag I've had it for a couple years and still can't seem to achieve a group less than 2.5 inches at 100 yards. I have tried Hornady superformance ammo and hand loads. we've used powders RL 19 RL26 H414 H4831 SC. the Best results came from the 4831 SC and the RL26 each grouping very similar at around 2.5-3 inches. the RL 26 having a good 150 FPS over the H4831 across a Magnetospeed. The bullets we have tested so far are Hornady SST in 200Gr SST in 225 Gr ELDX in 230 GR and Berger elite Hunter 250 GR. All of the bullets were seated to mag length as this has been producing the most consistent loads. today we tested the 250 Gr Berger with the RL 26 and the H4831 both powders were fantastic but accuracies were again poor. we were measuring standard deviations of no more than 12 and i'm starting to wonder if this rifle just needs to make its way back to tikka. Any Insight would be fantastic!