I have, and occasionally shoot, .36 and .44 cal lead. There is a big difference in the wallop the .44 delivers.
I have more experience shooting 3/8 and 1/2-inch steel, since they work better in my catchbox. I often use the same bandset for both in a session, and simply adjust my aim point lower for the heavier stuff. The big stuff looks like it's being lobbed, but it hits harder despite the lower velocity.
Another strategy that works for me, is that I normally cut my bands to about 1/4 my draw length. That robs some of the power and pays off in longer band life. It also lets me shorten the same band to 1/5 the draw length for the heavier ammo.
Choices, choices, choices!