From: (BUFDRVR)
Date: 7/20/2004 7:01 PM Central Daylight Time
Message-id:

The X number refers to case length. There are several 7.62 diameter rounds
out
there varying length. 30 carbine = 7.62 X 33, 30-06 = 7.62 X 63. The
Russian
equivilent to the 30-06 X 54R

Thanks to all for the answer. I'm assuming the larger x number, the longer
the
case and the longer the case the greater the load of powder?


BUFDRVR


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