The very things that makes a 45 Long Colt supposedly obsolete also make it versatile. It's large case, designed for a big dose of black powder, allows ample room for slow-burning Smokeless in guns that will handle such loads; they also keep pressure down on moderate loads. The length of the cartridge itself makes it amenable to use in lever action rifles. Its large case & bore also provide of room for bullets well over 300 grains with a powder charge that will push them at any sane velocity for the firearm you are using.
The 45 ACP offers all the defensive capability necessary for a carry gun. But for those that need or want it the 45 Long Colt officers a degree of Versatility not found elsewhere.
