Well about 200 rounds through my Texan 50 and wouldn't cock work ect. Always for hunting season!!! Lol I didn't wanna send it back to Airforce and miss hunting season. I getting pretty familiar with the platform now. With help from my internet friends helpful YouTube videos. I found the problem. The main carrier aluminum tube is cracked. I run 3625 psi on a regulator. I didn't do anything excessive. This will be my second faliure. I wonder if this isn't a common problem will the more powerful platform. African Air Ordinance makes the tube out of stainless steel. My thinking is this is going to happen with the aluminum tube from Airforce. Maybe the 50 with heavy lead and Tx2 valve with aluminum tube don't work out.