Depends primarily on the bullets over speed, noise, racket and recoil. Posting muzzle velocities of handgun rounds and boasting "power" sure looks conclusive, but its also pretty misleading.
The wheelgun chambering eats more and different bullets with less issue. It even eats different length brass.
Sure, lots of people have remarked their 357s are 38s, but no one has remarked their 40 is one....
I will conclude the 40 is the modern day version of the 38-40, which isnt a bad thing.
That's a good assessment. It's a very versatile cartridge.
http://www.thesixgunjournal.net/the-40-sw-your-tax-dollars-at-work/
