I had a 7-08 T/C Encore that did the same thing. It just would not shoot my handloads for some reason. I even went as far as sizing the brass and priming and trying an empthy primed case in the action. These always went off. But when I added the powder and bullet, the round wouldn't fire. I sent the rifle to T/C and they sent it back saying everything was fine. I used these same dies for 2 other 7-08s I have and never had a problem with the handloads. I since got rid of that Encore. Funny thing is though, the dealer where I traded it, told me someone stole it off the rack a week later. I guess it was one of those 'jinxed' rifles.