I shoot 55#.

I'm not an ox, but I could, and have shot more weight.
I backed off because I found out the hard way that drawing can be much more difficult when you're cold and stiff from sitting in your stand for hours. I got busted by a doe because I took to long to draw. I could barely pull the thing.

I shot 60-62 just fine in practice under ideal conditions, but in the field, things can be different.