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Yes. Barrel length matters as far as the velocity of the bullet is concerned. The longer the bullet is exposed to the expanding gases produced by the burning gun powder it's velocity increases. The moment it leaves the barrel it begins to slow down.
In short barrel firearms sometimes the powder does not have enough time to burn completely before the bullet exits the barrel and begins to slow. So the extra discharge produces extra recoil, noise and flame.
Many ammunition manufacturers produce 'short barrel' ammunition using proprietary powder mixtures specially designed for snubbies and the like.
Many people like 357Mag snubbies. I don't fault them, I'd certainly hate to be in front of one.
Fact is the recoil from a small 357Mag like an SP101 is brutal! And the SP101 is pure stainless steel and heavy for it's size.
Shot placement and quick follow-up shots are more important than caliber. Try firing 5 or 6 357s and then 5 or 6 38spl+Ps. You'll find that you'll get back on target and be able to fire your follow-up shots a lot quicker with the 38s. IMHO - three quick 38spls on target will trump 3 badly aimed 357s.
Shot placement if King,
Penetration is Queen,
And all the rest is, dust in the wind.
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