.
t
300 RCM
.
.
Ruger
Compact
Magnum
NEW in 2008
The idea of shortening a
magnum case, and increasing
performance by optimizing a
case's geometry to deliver more
power with less powder began
with Lazzeroni back in the early
1990's.
Winchester introduced 7
different
Short and Super Short
Magnums, (3 W
SSM & 4 WSM)  
in the early 2000's .
Now Ruger and Hornady have
developed two "Proprietary"
Short Magnums, the 300 RCM
and  338 RCM,
RCM for
Ruger Compact Magnum.
150 grain projectile = 3,627 FPS
180 grain projectile = 3,597 FPS
and slightly beats out the
300 WSM
$ 3.25 per
Cartridge
..