Weatherby , Caliber: 300 WBY Mag
WBY BRASS 6.5-300WBY MAG UNPRIMED 20/10
Model:

ZPAP M85 , Weight (oz):
Weatherby® Magnum Ammunition features Precision Brass. Features CNC-machined primer pockets produced to match-grade specifications. Available for all Weatherby® Magnum calibers. - Unprimed Brass 20 Count: 6.5-300 WBY MAG UNPRIMED BRASS