Nosler RDF HPBT, 28 Nosler, 185 Grain, Rifle Ammunition, 20 Round Box 60141 Founded in 1948, Nosler, Incorporated is a family-owned company located in Bend, Oregon. Nosler is best known for revolutionizing big game hunting with its world famous Partition and Ballistic Tip bullets. With the company motto Quality First, Nosler manufactures premium component bullets, brass, ammunition, and semi-custom rifles for domestic and international customers.