I have a remington 700 titantium short action with a custom bansner stock and custom barrel #2 contour 23" long threaded for 284 winchester with the wyatts 3 inch magazine extender. Stock is bedded and barel is free floated.Ever since the new barrel, I have not been able to get the gun to shoot worth a ****. I am getting, at the best 2 1/2" groups for 5 shots at 100 yds. I have tried several popular powders adn loads for the cartridge- varget, rl 15, 120 gr tsx, 140 gr tsx, and 140 gr ballistics tips, even different primers. Nothing seems to shoot. I can get good groups with a lot of my other guns, so I don't think I'm the problem. I have a leuplld VX3 2.5-8 scope with leupold dual dovetail mounts. I can only think that since my gun has a long throat, I can only seat the bullet .20 off the lands, due to magazine box restrictions. Do you guys have any thoughts? My next step is a new barrel, even though this has only about 100 rounds through it total!! I need help!!