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tmj ammo

kissgoodnightkissgoodnight Member Posts: 4,063 ✭✭✭
edited April 2016 in Ask the Experts
I do not know what tmj means. Could someone enlighten me on this.
thanks
kgn
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Comments

  • rufe-snowrufe-snow Member Posts: 18,650 ✭✭✭
    edited November -1
    Total Metal Jacketed. It's actually copper that is plated on the lead projectile.

    Some companies use a thicker layer of plating than others. More able to sustain, being fired at higher velocities.
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