Not sure how many of you have a Safir Arms T14 - the AR style 410 shotgun. I have had mine for a while, but always had issues trying to load high capacity magazines - the shells just would not fit properly and they would hang up. After several months going back and forth with ATI - and them sending me multiple hi-cap mags free to try to fix, no luck. Then finally, info. came out that only certain shells would fit properly. I did not know that all 2 1/2 inch shells had varying lengths! All the ones I purchased were too long. I finally picked up some different ones after measuring, and found two that fit nicely :
Federal 410 handgun loads 000 buck
Federal Hi-Brass Load 6 shot
So if anyone was having the same problems as I was - try these !