The Sellier & Bellot SB338LMB Rifle cartridge in .338 Lapua Magnum brings a 300 gr Hollow Point Boat-Tail bullet to sport and target shooting where long-range accuracy and reliable terminal performance matter, and shooters will appreciate the consistent muzzle velocity of 2713 fps and muzzle energy of 4903 ft-lbs for heavy-barrel bolt guns and precision rifles, whether dialing in wind holds on a match stage or validating zero at extended ranges; the SB338LMB series is aimed at marksmen who need a predictable ballistic arc and tight groupings, with brass-cased ammunition that feeds and chambers smoothly in modern actions and a boat-tail profile that reduces drag for stable flight, while the hollow point design offers controlled expansion when required for controlled-range purposes, making this load suitable for precision training, ballistic testing, and competitive long-distance work, and the Sellier & Bellot name provides a straightforward option for shooters seeking well-documented ballistics and consistent performance from a respected ammunition line.