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.50 BMG United States

.50 BMG Ball United States F A 47 profile view..50 BMG Ball United States F A 47 head view.

Details

TypeBall
ProjectileFMJ, steel
Casebrass, taper crimp
Primerpercussion, flat, brass, 3-stake crimp, red annulus
HeadstampF A 47
NotesThe purpose of this experimental projectile is not known. It has been speculated that this round was to test barrel erosion, or that it was to test the feasability of wire-wraped driving bands.