utgangs punktet 12.7×99mm hylse .50 bmg
Bullet diameter 12.95 mm endret til 5.7mm
Neck diameter 14.2 mm endret til 6.1 mm)
Shoulder diameter 18.1 mm
Base diameter 20.4 mm
Rim diameter 20.4 mm
Rim thickness 2.1 mm
Case length 99 mm
Overall length 128 mm?