Felicity Van Horn:
"I use the new double-action Colt .45 mostly," Felicity replies.
"But I also carry a back-up, the Colt Frontier, chambered for the Winchester .44.40 so the same ammo can be used for rifle or revolver."
Y'know, I
hate to be "That Guy"
(he's lying! He loves being That Guy!), and so I offer my
apologies for being a
Geek, here....
When you say "
the new double-action Colt .45", Felicity, are you talking about the "Peacemaker", aka the "Single Action Army, SAA, Model P"? 'Cuz
that was a single-action revolver.
Colt
experimented with double-action revolver systems for
decades, but he considered them to be unreliable. Colt Manufacturing did not actually
manufacture its own double-action revolver until 1877. The Colt M1877 was chambered for 3 different calibres--the "Rainmaker" being chambered for .32 Long Colt cartridges; the "Lightning" in .38 Long Colt; and the "Thunderer" in .41 Long Colt.
The Colt M1878 was often called the "Frontier"--it was an improved M1877, and a little bigger than the M1877. The Model 1878 was available in .45 Long Colt, .32-20 WCF (a Winchester rifle cartridge), .38 Long Colt, .38-40 WCF, .41 Long Colt, .44-40 WCF, .455 Webley, and .476 Eley. The most popular calibers were .45 Long Colt and .44-40 WCF.
The Colt M1892, aka the "New Army & Navy" was only ever chambered for .38 Long Colt and .41 Long Colt.
Since you said you "also carry a back-up", I
assume from that you're
wearing 2 pistols--so why not just carry 2 Colt Frontier double-action pistols,
both chambered for the .44-40 WCF? As I
also assume you own a Winchester rifle of the same calibre--
probably the very popular Winchester Model 1873--that would mean you
only ever have to carry/buy that
one type of cartridge for
all 3 weapons. Very efficient ^_^