Copper-plated 40 grain hollow point projectiles. Noticeably more uniform than some other brands. Ten plastic boxes holding 100 rounds each. The lid of each box clicks positively at each 5 round row to allow you to easily dispense 5,10 or 15 rounds rapidly. CCI's Maxi mag ammunition is great for sports from small game hunting to casual plinking. CCI combined rimfire priming compound with select propellants so you get very little residue.