Its a new gun. fired about a half a box of wallmart bulk ammo thru it, federal low brass clay and pigeon stuff, and switched to leftover ammo I needed to dispose of. shot some rem. long range 6 shot, some win. AA, and some kicked worse than others, but then I got to this weird shell. Solid plastic, red, called "active", 2 &3/4". I read it and assumed it was safe to shoot, as it was a 2&3/4" #6 shot 12 ga. shell. Well It kicked the most, and when I shot the action came open. I was stunned as this gun is supposed to handle 3" mags. I checked over the gun very well, No seen damage. I shot the rest of my "odds & ends" ammo, with no other problems. Can anybody tell me about this rogue shell, and can My gun which is supposed to handle 3" mags do so?