The only reason is it is called a battle rifle is because it is a fully powered cartridge. It is stronger and does more damage than an intermediate powered cartridge.
A
battle rifle is a
service rifle chambered to fire a
fully powered cartridge.
[1] The term "battle rifle" is a
retronym created largely out of a need to better differentiate the
intermediate-powered assault rifles (e.g. the
StG-44,
AK-47,
M16,
AUG) from full-powered rifles
This argument is **** hilarious,