Sample dating introductions
Currently manufactured brass has a rim of adequate diameter for such uses.
Modern Winchesters, Marlins and replicas have remedied this omission almost 100 years after the fact, and the .45 Colt is now available in modern lever-action rifles.
They also state that pressures do not exceed 25,000 psi (CUP).
This is well beyond a pressure that can destroy even modern guns chambered in .45 Colt.
Colt began work on their 1873 Single Action Army Model in 1871.
Using .454" diameter bullets in the smaller barrels will work but will generate higher pressures.
Cases used with .454" bullets may have to be full length resized to work in newer guns.
Additionally, the round has seen resurgence as a cartridge in handgun hunting and Metallic Silhouette Shooting competitions beginning in the 1950s with the introduction of stronger heavier framed handguns.