For people who do reloading and want a slow-burning powder capable of producing maximum velocity Alliant Reloader 25 Rifle Powder is ideal. This powder is manufactured for bore magnums and because of the improved slower burn it can deliver extreme energy required by heavy magnum loads.This particular powder is recommended for people who enjoy big game hunting and shooters of Weatherby magnums. Made by a U.S.-based company with more than 100 years in the business the powder is guaranteed for reliability and consistency because of the tough manufacturing and quality control procedures.