Bullett????
If the thing weighs 2000 pounds and bologna bulls bring $.60 that is $1200!!!! $1200!!!! There is no way, no how, I would ever walk away from $1200 and I have NEVER met ANY animal I could not load......eventually Sometimes it takes more than one day AND WHAT were you doing with a TRACTOR???? I can't shift gears fast enough on any tractor I have ever owned to herd any animals with it. Anybody who ever resorts to using a bullet, needs to just sell out and get out of the business. Your problem is that your facilities SUCK!!! and they suck BADLY!!! IF you intend on staying in business go ahead and fix your facilities right, where you can hold anything in your main pen, run ANYTHING in to the chute, prevent anything from backing out of the chute, and ultimately load anything at all. While working on that. Leave the bull running around your place in to the winter. Spend your time getting him to eat cubes or corn out of a 15 gallon rubber bucket daily. Take your time and eventually move his pan closer and closer to your pens. When you really get him puppy dog friendly, feed him IN your pens, then in your chute, you might even try feeding him on the edge of your trailer. If you can do that for a week, try putting his pan in the front of the trailer (with truck attached of course), IF he jumps up on the trailer to get his treat, SLAM the back trailer door shut , drop everything and take him to town immediately not stopping for anything along the way.