logically the smaller body would feel the recoil less because the less mass of the shooter, the easier it is for their body to move.
the heavier shooter would not move as much from the recoil makeing him absorb way more of the energy. this is the reason you feel more kick when in prone vs standing. when standing the rifle only has to move the mass of your upper body, but when prone it is pushing against the length of your body or your whole mass instead of half. then comes into play how soft you are (fat vs muscle)
There can be too much of a good thing with antler rattling.
I like to hit the horns together for a good 30- to 40-second rattling sequence and then hang them up and resist the urge to hit them again.
This works to the hunter's advantage, because if a buck has heard it, he may have been 300 or 400 yards away and he comes in and he's not exactly sure where it came from.
When finally is time to rattle again throw a slight change-up into the routine.
The second time, don't rattle as loud...