17 PMC/Aguila. This is a rare ammo for a rare firearm chambered in this caliber. If you have one load up as you already know how hard and expensive this ammo is to find elsewhere. It will work in 17 mach 2 bolt actions too but usually can only get 3 to 4 cartridges into a magazine to feed correctly. You will get a 1000 rounds. It is packed in 50 round boxes with 10 boxes to the 500 round brick. You will get 2 Bricks totaling 1000 Rounds.