Author: Strangely Brown
Subject: IMR's SR4759 and the .303
Posted: January 10 2023 at 3:03pm
Subject: IMR's SR4759 and the .303
Posted: January 10 2023 at 3:03pm
 Shamu wrote:Its impossible to over load a .303 Brit with Black Powder, or even the substitutes. There just isn't enough case volume. |
This ^^
The original BP 303 loads were compressed pellets of BP dropped into un-necked cases which were then necked just before the bullet was seated.
I wasted weeks of my life trying to perfect a BP load before I was given the above information!