The real question is.... did you get the opportunity to cut loose on them with your slide fire stock?
fill, I don't use the Slide Fire on the hogs inside the trap. If I start spraying down the area with 7.62X39 bullets, chances are that more than one or two of them might wind up doing damage to my T-posts and/or cow panel that I built the trap out of. I reserve the use of the Slide Fire for when I come across a sounder of "free ranging" hogs. I can usually get 3 or 4 of them down if they're packed in pretty tightly. Normally one lethal, one shot kill, and a couple mortally wounded that I have to use follow-up shots on to get them on in to Hog Heaven.