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What Is A Full Metal Jacket (FMJ) Bullet?


How to Shoot Fast & Accurately  

The Gun Digest Book Of Concealed Carry


A full metal jacket bullet is a lead bullet that is coated or jacketed with a coating of a harder metal (usually copper). This metal jacket reduces barrel fouling and improves bullet penetration. The jacket also limits the expansion of the bullet and helps keep the mass of the bullet into one piece.




Authored By Mike Coviello (Tanner)


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