Me too. I would have never thought about it in a million lifetimes thats why i found it so interesting.
I still have the 'What's the point?' Sometimes even though it can be done it shouldn't.
Up to a month. Got to do them early. This is what I used. The size of the rings shown are are pretty close to the actual size I was using but still i think a buck could pull the testicle through the unstretched center opening.
Ive used an elastrator on bull calves. A band sized for a bull calf would be way to large and would be impossible to stretch open without a pliers.
What did you use? A link.