Back in 1980, 2 of my buddies and myself each bought 45cal TC Hawkens. Each Sunday we would shoot. One Sunday, one of the guns went off while being placed in the sand bags. The next week, the other 2 guns did the same. It scared the HECK out of us. Each gun, broke their seer, just like yours. The seer was replaced under warranty, but the knowledge of good gun handling became very apparent from that experience. Bought a second seer, just in case it happened again and I still have it.