Sure, LMG!! I read some of that in an article entitled "Revival of the Fittest" on pp 58-62, and pg 95 of the June 2000 issue of Guns & Ammo. I'm ashamed to admit that I don't have the author's name. I tore out the article and didn't keep the title page with the author's name. The theme of the article is the S&W Schofield, old and new. On page 60, second column, the author writes "This S&W revolver would use a cartridge about 1/8-inch shorter [than the .45 Colt, my note] with a 230-grain bullet over 28 grains of black powder, as opposed to the service cartridge's 255-grain bullet and 40 grains of black powder. Upon adopting the S&W round as the service standard, the Army found that its Colt revolvers were breaking down less as well."
I hope this is helpful. If you want the source of my information about the chronographed velocity of some very old .45 Colt ammo loaded with black powder, let me know. I'll send that to you as well.
Jayhawk Dan