Will this ammo work in my new Mini 14 which usually shoots .223 rounds ? The dealer says it will shoot 5.56 rounds. What is M855 mean ? Do I need a special clip ? Will it chamber as well as .223 ? Will it hurt the rifling? Thank You.

Question

James G. · Answer

Douglas, it will fire just fine and cause no damage in the Mini 14 Sir. The M855 has a steel penetrator in the tip as pictured here  : https://www.thetruthaboutguns.com/the-truth-about-m855-5-56-nato-ammunition/

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Will this ammo work in my new Mini 14 which usually shoots .223 rounds ? The dealer says it will shoot 5.56 rounds. What is M855 mean ? Do I need a special clip ? Will it chamber as well as .223 ? Will it hurt the rifling? Thank You.