The .223 caliber load is popular, the article says, because it has better fragmentation upon impact, ... Executive Director of the Coalition to Stop Gun Violence, told ABC News today.

The weapons that use .223 caliber ammunition range from bolt-action rifles to the more "assault" type semi-automatic rifles. New Jersey and Connecticut both have strict gun laws in place banning ...

Gun dealer Gabriel Vaughn, owner of Sportsman's Arms in Petaluma, ... The rounds AR-15s fire are .223 caliber, while common deer-hunting rifles use the larger .30-06 and .308.

The department recently determined it will transition from shotguns and rifles to the .223-caliber rifle. Pennsylvania State Police adopt .223 caliber rifles, enhancing range and effectiveness ...