LarryThe real difference with military and civilian chamberings is the pressure limits. They are different for each spec. also I think the throat on 5.56...The real difference with military and civilian chamberings is the pressure limits. They are different for each spec. also I think the throat on 5.56 is longer which can cause trouble when chambering long mil-bullets in 223Show more13 years ago
caveatimptorComment for 5.56/.223. Has to to with pressure. Look @ it this way is the best discription. .357 magnum vs. .38 special. You may shoot .38's through...Comment for 5.56/.223. Has to to with pressure. Look @ it this way is the best discription. .357 magnum vs. .38 special. You may shoot .38's through a .357 mag. But not /vise versa. Just take care shootng the 556 in a 223.. Harold, Distingushed Rifleman & NRA Instructor. Thought this was 'bought AR 10/ 7.62mm/.308 ? Gas Guns & bolt guns have a wide spread of difference. Stay Safe...Show more13 years ago
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