"B2431" wrote in message
...
|
| Generally, just keep in mind the evolution of propellents so modern
cartridges
| can accomplish higher pressures in shorter cases. Competition shooters are
| doing amazing things with ammunition now.
|
| Dan, U. S. Air Force, retired


Only up to a degree. Military ammo may have to sit on the shelf for 30
years or more (I remember shooting 50 cal that was 35 yo), be fired with
newer or older batches on the front line and be compatable with the oldest
firearms that it's likely to encounter.


The major changes were (obviously) black powder to nitrocellulose based
propellants, which would be a major advance for gas operated weapons.


Since then, most ammo development, _within a calibre_, has been for shelf
life and stability, less residue and more consistent performance
round-to-round.





Cheers


Dave Kearton