Winchester Match ammunition is loaded with the highest quality components under the strictest tolerances to produce consistent, accurate ammunition for competition shooters. Trusted by hunters for many years, Winchester ammunition is now becoming more available to the match shooter. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.Features:Match grade consistencyClean burning powder and primerMaximum long range accuracySpecifications:Cartridge: 338 Lapua MagnumBest Use: Range & TargetGrain Weight: 285 GrainsQuantity: 20 RoundMuzzle Velocity: 2690 Feet Per SecondMuzzle Energy: 4578 Foot PoundsBullet Style: Jacketed Hollow PointLead Free: NoPrimer: BoxerCorrosive: NoReloadable: YesG1 Ballistic Coefficient: 0.756G7 Ballistic Coefficient: 0.356Velocity Rating: SupersonicCountry of Origin: United States of America