The AR15.Com Ammo Oracle

History and Basic Design of .223 and 5.56 Ammunition.

Performance of .223 and 5.56 Ammunition.

Terminal Performance of .223 and 5.56 Ammunition.

.223 and 5.56 Ammunition Testing

Selection of .223 and 5.56 Ammunition.

Ammunition recommendations from the authors of the AR15.com Ammo-Oracle.

Purchase and Storage of .223 and 5.56 Ammunition.

Legal questions.

Miscellaneous .223, 5.56 and Other Ammunition Questions.

Ammo Oracle

Q. Should I leave two tracers at the bottom of my magazine to tell me when I'm out of ammo?

This depends.

Do you also want to tell your enemy both where you are and that you are out of ammo?

While technically tracer rounds are only supposed to "light up" a few dozen yards from the shooter, in actual use, many tracer rounds ignite right out of the barrel. This, combined with muzzle flash, is a positional dead giveaway.

Tracers are best left for machinegunners, or for squad/platoon leaders to use as marking rounds to direct the rest of the squad/platoon to a target.