Last time I helped at a branding, I was asked on the fly to vaccinate, never had before, or given much direction or help. Used a barrel gun thru a chute that you cant put your hand in to pull up skin, had some problems with some because plunger would not go down or vac would spray back out, and what do I do when they go down down on their front knees in chute and cant get good neck access???, i feel like i was vaccinating to far back, noone says anything, and i have to go back tomorrow.......all vaccination procedure through a squeeze chute door would be helpful, i know one nice person there, and the rest are not helpful