Brand new here. I hope my questions can be answered.
I have some empty cartridge cases that are head-stamped: REM-UMC .45 Colt, WRA .45 Colt, and WESTERN .45 Colt.
These cases are the length of the .45 Schofield cases.
The REM-UMC cases are balloon-head with a rim of narrow dimensions.
The WRA and WESTERN cases are with an extractor groove ahead of the rim and the rim is larger than the REM-UMC.
I have read that the REM-UMC was designed to be used in the Colt SAA (hence the narrow rim). I am told the others are intended for standard Schofield and other S&W topbreak revolvers.
My question: When was the last time all three of these cartridges were manufactered?
Thank you in advance.