357mag uses slower burning powders? That's quite a broad statement considering most 357mag is watered down these days
The best performing loads for the .357 use slower burning powders than you typically see in the 10mm (H110/W296, Lil'Gun H4227 etc.) Obviously these aren't used in ALL .357 loads--just the highest performance ones. I think we can ignore the whole "typically watered down these days part" as it's true of both 10mm and .357 and is irrelevant when we're discussing the maximum capabilities of each.
The farther the projectile travels after exit, the more energy it has and less energy it spent in the target.
So you're telling me that a 200gr bullet at 1,900 fps that lands 200 feet behind what you shot is going to do less damage to the target than 200gr at 800fps that falls to the ground within feet of the target?* You honestly think that doubling the velocity of a bullet is going to make it less effective on the target when both provide complete penetration?
A 200 gr. .401 is less powerful than a 180 gr. .357, both at 1250?
Who said that? And 1250 is kinda slow for a 180 .357 load, as I posted earlier.
The farther the projectile travels after exit, the more energy it has and less energy it spent in the target. I'm not a light and fast guy and don't believe in hydro shock at velocities under 2,000 but energy dump is something I do believe in.
What exactly is it that this energy dump you're talking about is actually accomplishing?
It's clear that it's not providing penetration, as you described both rounds as exiting.
It's clear that it's not providing damage via hydrostatic shock, as you said you don't believe in it from rounds under 2,000 fps.
So what is it actually *doing*? What is its wounding mechanism?
I've chronod' Speer Lawman 155 from a Sub 2K at just over 1,500 average
That's an exception to the rule then, as the typical gain for .40 S&W is 200fps or less, compared to a typical gain of 400-600fps for the .357, as a trip to ballisticsbytheinch.com shows.
That's if you don't count all the J frames out there which make up the true majority of guns carried in the caliber.
Hey, if you want we can talk about the EAA Witness and how you can't shoot full-house 10mm in them
You can't really call the wide variety of guns the .357 is chambered in as one of its disadvantages--as long as full power ammo is easily available, which it is. That's like saying that the fact that the 10mm is only chambered in like 5 different guns is an advantage...
* Edit: Just to clarify, I'm using arbitrary velocities to illustrate the principle.