The good thing is that you probably did not burn all that powder but you did increase the weight of whatever bullet you were using by about three or four pellets weight. Most rifles will not burn more than about 200gr. of powder unless the barrel is really long and the bullet is really tight. When I first shot T7 in my Omega I did not know about the crud ring and shot one load with a pretty small gap between the loose T7 and the bullet. The recoil was severe enough to put a nice cut on my eyebrow and make me wonder just what happened. I stopped shooting at that point and went home and cleaned the rifle. That is when I found the crud ring and have been trying to deal with it ever since. My Omega did not show any adverse signs from the episode but it sure did kick. In your case I might send the rifle back to T/C as that is definately way over maximum recommended loading.