j.d. jones wrote an article in the July, 2001 American Handgunner magazine re: "The Eight Great Truths About Terminal Ballistics". jones states that the differences in diameter and velocities between revolvers chambered in .44 to .50 caliber is minimal whether speaking about an animal's reaction or an examination of an animal's wound. however, one of his eight ballistic truths deals with the differences between cast and jacketed bullets and the way velocity affects performance of jacketed bullets more than that of cast.
i found that article at
www.findarticles.com a couple years ago.
based on what i've seen from both paco kelly's writings formerly on one of the revolver websites, and the articles on john linebaugh's website i chose the .44 mag'. i don't have problems with brass.......so far......with the mag'. even when pushing it in my rugers. linebaughs success with the .45 colt comes in revolvers that are tightly chambered for such hotrodding adventures. i don't buy custom or semi-custom revolvers because of my financial goals.
j.d. jones wrote in his book with larry kelly, "Hunting for Handgunners" that his 320 gr' hardcast lead bullet (from molds he used to sell) would leave a 7.5" barrel'd handgun at around 1400 fps'......with safe pressure. it has been used to kill elephant.
http://date.date.hodgon.com allows you to examine .45 colt loads in Rugers, Freedom Arms, and T/C's that reach up to 1266 fps with bullets of 300 to 325 grains in hardcast lead.
i'll take the flatter shooting .44 mag' and the greater load densities that i can achieve with it at safe pressure limits for Very Good Accuracy.
just my two cents,
ss'