figured it out

[Bullseyelr]

thanks

 

[Jong]

Re: Are .223 and 5.56mm the same??????BUSHMASTER-RRA

http://www.thegunzone.com/556v223.html

 

[HOOFER]

Re: Are .223 and 5.56mm the same??????BUSHMASTER-RRA

you can shoot both, 5.56mm chambers can handle both, your not supposed to shoot 5.56mm ammunition in .223 chambers but i have before. 5.56 ammo has higher pressures than 223