I've had the same problem with my T3 in .270. I chalked it up to just being me. I'm not a very good shot. The first box of ammo I put through it was the cheapest I could find, 150 gr Fedral Power shok's. My first group was 1.5 MOA. It just got worse from there. I noticed after about 9 well spaced out rounds, the I was getting barrel contact with the stock. I was surprised how hot it had gotten. I cleaned it and let it cool. The groups didn't get any better. I know I'm not that good of a shot but dang, expected a little better. I jumped behind a .223 between groups and shot .75 MOA. I have no idea where to go from here other then try some different ammo and work technique a little bit.