It takes the same energy to accelerate shot weight 'x' to velocity 'y' no matter the peak pressure involved.

It's just fizziks.

The pressure curve tells you where in the barrel the work is done.

The question is, as Miller points out, where would you like your 'stress'?

As far as does it make a difference... that's a question you have to answer for yourself. It's your gun and your eyeballs behind it.




"The price of good shotgunnery is constant practice" - Fred Kimble