Lapua 6.5mm Caliber Rifle Bullets 144 Grain FMJ 1000 Bullets. The reliability of this popular short range bullet means that every shot will hit the target. The Lapua B343 full metal jacket boat tail projectile for caliber 6.5 mm weighs 93 grams or 144 grains. Specifications for Lapua 6.5mm Caliber Rifle Bullets 144 Grain FMJ: Manufacturer: Lapua Caliber: 6.5mm Creedmoor Bullet Weight: 144 grain Package Contents: Lapua 6.5mm Caliber Rifle Bullets 144 Grain FMJ Lapua 4HL6000: 6.5mm Caliber Rifle Bullets 144 Grain FMJ 1000 Bullets