Thanks for that. Finally went back into my reloading books and found some more information about this cartridge. 1960 was the year of introduction (Norma brass became available in 1961) and it was designed for the reasons I'd understood...for use in surplus .30-06 actions. It was fairly successful until Winchester came out with the .300 in 1963 and became the more common alternative. Ballistically they are nearly identical.

Last edited by Lloyd3; 01/10/22 10:42 AM.