Anyone had an issue with an A400 Barrel blowing up?. Bought a brand new A400 beginning of March. Used for a Pheasant Tower Hunt, approximately 50 rounds, then a round of sporting clays with no malfunction or issue. Second round of clays (different day), shooting a true pair, blew out choke tube on first shot then expanded the end of barrel on second shot. Checked the choke to make sure it was tight prior to shooting the stand. Shooting Fiochi 7 1/2's. Just curious if anyone else has had a negative experience with the A400. Did a lot of research and asked a lot of questions prior to choosing the A400, so was very surprised at this happening.