habanero the maine bull? what little experience i have, and in my herd...he worked best on the deepest sided and really good milkers...the one i have doesnt have near the milk the rest of her cow family does, but!!! she is a momma machine...she knew what she was supposed to do (as opposed to those heifers that you have to tie their back legs so the calf can nurse the first couple times, lol) spits babies out no problem, 2 calves so far, a bull calf in the low 80's and a heifer calf in the low 70's...
the only other beef i have with her besides milk is she is a bit high in her flank