Sweet stuff, mate! Not much of a shotgun fan myself (just own Jackhammer which I bought when everyone and their mother was using 1 shotting pump actions) but it's easy to see you have skill and could have done the same with any weapon . Excellent movement! Keep it up!
I have had some great runs before with Miss. Piston but I have never gone for this long. Makes me want to give up my bang bricks for health sticks now...