Greetings @csmiffy,
We tend to forget that before IMR4350 arrived like a thunderbolt around 1940 IMR4064 was considered a slow powder in a field of not that many powders. There was an article in a recent Handloader or Rifle about the load and there is still pressure tested modern data for IMR4064 and AR2208 available on line.
Regards Grandpamac.
Bookmarks