I was at IDPA practice and new member to our club and very nice guy, that I helped out with his new shooters orientation several months back. Walked up to me said hello and handed me a new unopened can of Norma 203-B powder. Said, He thought that it could be use for either .308 or heavier .223 loads.
I caught a excerpt from the IMR - Daily Bulletin about it stating: Norma 203B Available from Grafs.com — Replaces Varget or RL15
For those folks desperate to find Hodgdon Varget or Alliant Reloder 15, we suggest you try Norma 203B. This is a very accurate powder very close in performance to Reloder 15 (it is produced by the same manufacturer, Bofors). It should give slightly more velocity than Varget, but it is somewhat more temperature sensitive.
In a 6mmBR or .308 Win, start with your Varget load with 203B. You may, then, be able to increase the load slightly, unless you’ll be shooting in very hot weather. Grafs.com has plenty of 1-lb cans of Norma 203B in stock, Item Number: NP203B1,
Anyone every use this powder for .223? Being similar to Reloader 15 or Varget, I'm suspecting it would push a heavier 69-77g pretty well. Just would like to find some data for it.