Lapua's Polar Biathlon is a short range .22lr ammo recommended for match and practice shooting. This specific ammo is the .22lr ammo that has been behind the majority of biathlon medals won worldwide for years and years. Designed to shoot in cold conditions, it boasts of optimal performance, consistency, reliability, and accuracy. BC G1 coefficient = 0.172. Lapua .22 LR Polar Biathlon - 500rds Brick 420166-500