Homer Clark Jr's company, Alcan is credited with greatly expanding the popularity of shotshell reloading in the United States after World War II
Bair Machinery manufactured a line of metallic and shotshell reloading presses based on Pacific designs during the 1960s and 70s.
Hansen Cartridge Co.
Started in 1975 by John R Hansen, the Hansen Cartridge Co. imported reasonably priced boxer primed non corrosive rifle ammunition for many military calibers at a time when the only alternatives available were the expensive Norma brand cartridges or non reloadable berdan primed military surplus ammunition.
Starting in 1980, Hansen imported 30 carbine and 5.56 mm NATO ammunition manufactured by the Poongsan Metal Manufacturing Co. of South Korea (Waters 283).
Soon they were importing quality ammunition, made by Prvi Partizan in the former Yugoslavia, now Serbia. Available in a variety of military chamberings such as 303 British, 7.62 x 54 Russian, 6.5 Arisaka, and so on, it used quality boxer primed brass. I still use some Hansen brass from cartridges that I purchased in the early 1990's. I never used Hansen, 22 rimfire or the centerfire pistol ammunition but I assume that it was of comparable quality to their rifle ammunition.
For whatever reason the brand dissapeared in the early to mid 90's.
Street address to Hansen - 244 Old Post Rd Southport CT
A mail order catalog behemouth, selling all manner of hunting and fishing equipment, Herters collapsed under its own weight and some poor business decisions during challenging economic times
At one time the largest private dealer in small arms in the World, Interarms imported a wide variety of affordable firearms to the U.S. market.
Literally, just a stones throw away from Interarms was Potomac Arms, once one of the best gun stores in Northern Virginia.
Waters, Ken "American Bulleted Cartridges" Gun Digest 1980 Deluxe Ed. 1979 p.283