Lapua's midas+ rimfire ammunition is the improved generation of midas.The long success story of midas.22 lr ammo brought a lot of excellent results, which have been used as the basis for the new generation cartridges.Always accurate, this is the.22 caliber ammunition of choice for many world class rimfire shooters.Caliber: 22 LRBullet Type: Round Nose (RN)Bullet Weight: 40 grMuzzle Energy: 1069 ft lbsMuzzle Velocity: 1073 fpsCasing Material: BrassRounds Per Box: 50Boxes Per Case: 100Hazair: Yes