I have Bushmaster BA50 .50 caliber rifle. I've fired aboult 50 factory rounds in the last couple trips. Then I just bought some reloaded ammo for it. I fired the first one and it seemed like a much bigger than usual recoil. The case had a 1/4" shiny ring about a 1/4 way up the case. I fired another round and got another big recoil. This time the case had cracked just about all the way around at the same location as the previous round. I didn't use any more of that ammo but I did continue to fire the factory ammo and I had no problems. Another thing is the primers on both the rounds were very flat and expanded like they were sealed to the brass case after firing. Does this sound like a problem with the gun head spacing or is it the ammo? What's a worse case scenario if brass case cracks like that?