The .338 Lapua Magnum cartridge, or .338 Lapua Mag or .338 LM for short, is the ultimate centerfire rifle round specifically for extremely long ranges. While the .338 LM round has a strong military reputation, .338 Lapua Mag ammo has been used increasingly by competitive long range shooters in disciplines such as ELR. When the sport shooting target is beyond 1 500 meters, the.338 Lapua Magnum is the first choice. It is a combat-proven rifle round and provides incredible performance and precision in the critical role of military long range shooting. This .338 Lapua Mag is loaded with the heaviest Scenar Open Tip Match (OTM) bullet offered by Lapua at 19.44 g / 300 grains.