Green Tip was made to get through helmets and minor barriers. Steel armor WILL stop it. Green tip rounds are 62gr.
The magic recipie for getting through steel is 3250+ fps. Which you can get from 55gr 5.56 shot through a 20" barrel. 14.5, 16 and 18 barrels don't give you complete burn of the powder required to get that freedom seed up to 3300fps.
Green Tip was made to get through helmets and minor barriers. Steel armor WILL stop it. Green tip rounds are 62gr.
The magic recipie for getting through steel is 3250+ fps. Which you can get from 55gr 5.56 shot through a 20" barrel. 14.5, 16 and 18 barrels don't give you complete burn of the powder required to get that freedom seed up to 3300fps.
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