SIGTWO

Spoke with a project engineer at federal who desgined the the t-223 ammo. George advised that in the past the ammo had a thinner jacket and could fragment out of a hot barrel, meaning over 200 rounds fired in a short period with high barrel heat. The round was redesigned with a heavier jacket. He also said that any round exsposed to high barrel heat was subject to fragment due stress induced by round being exspoed to high heat along with sudden ignition of same. That being said the total circunstance of the round being fired and what was going on at the time,type of weapon, what conditions barrel temps and the age of the ammo. All of this could and would factor into what the performance and the out come of how the round performed down range. With out being there and running a test with varibles and a constant and not knowing lot numbers date of manufacturing.The ammo in question is the t-223-e. Federal is looking at the rifling of the departments gun cutting the jacket after extended firing periods. Also they are testing the ammo from the range that day to try and duplicate same.