Or anyone else who has an opinion on this. Regarding stovepipe stoppages I have seen many training dvds or articles from many well respected trainers who advocate tap, roll ,rack (as per type 1 stoppage ) to clear the problem. I like this idea of commonality, however many trainers that I have great respect for ( kelly mccann for one ) counsel against this on the grounds it may cause a double feed. I have set up stovepipes using orange safety rounds to experiment but have not been able to induce a double feed. I can't see how the slide can come forward far enough ( at least when round is trapped straight up or to the side and not some bizzare way ) to strip new round from magazine feed lips initially, something which would have to happen if racking slide again was going to cause double feed. Do you gentlemen have any empirical evidence as to probability of causing a double feed by utilising tap,roll,rack and what method do you use/recommend. Thanking everyone in advance for their suggestions as I am somewhat confused at present.