22 LR Remington 40 GRN 500 RNDRemington Thunderbolt . 22 LR 40gr Round Nose is Remington's best selling rimfire load a high velocity, reliable round for plinking, small game, and general range use. The 40 grain round nose bullet delivers consistent velocities and dependable ignition across a wide variety of . 22 LR rifles and pistols. An affordable bulk pack option for high volume shooters. 500 rounds per box. Caliber: . 22 LR Bullet: 40gr Round Nose High velocity 500 rounds