So I was wondering What a mature bull in his prime will put on from one year to the next , Say he was 365 last year , do you think he could put on 20 inches ? Ive never done the math Thanks .
I think it's going to depend on your definition of "Prime". "Prime" physically or "Prime" horn growth.
If it is horn growth I doubt a variance from year to year would equal almost 2" per tine. But, a 365 bull while in his prime physically may not have yet hit his antler growth prime. And if he has the potential to be a 400 class animal more than 2" per tine in a single year doesn't seem out of question to me. Especially if feed during a year of 365 growth was poor and the next year feed was luscious and of a certain mineral and/or nutrient content. I wouldn't think it is a common occurrence, but I think it could happen

Might be a good question to ask my USGS biologist friend! He is WAY smarter about such things than I am.