The other day I finally added a 4 5/8" Ruger BH .41 mag to the stable. Up until this point I have only been using 8gr of Unique behind a 215gr BBSWC for my M58. Now that I have the Ruger and will be doing some pig hunting I want to use the same bullet with 2400 for full power loads in the Ruger.
I referenced both my Lyman third edition cast bullet handbook and the newest edition of the Lyman pistol and revolver handbook. I am really surprised that there is such a big variation between these two books with the above mentioned bullet and 2400. The cast bullet handbook lists a max charge as being 18.8gr while the new pistol and revolver book lists 16.7gr.
I always thought that 18gr of 2400 was pretty much the old standby for a 210gr -215gr cast bullet in the .41 mag. Anyone have any idea why the big variation, and is 18gr of 2400 no longer safe? I have a hard time believeing 16.7gr is going to get the stated 1200 something fps listed in the new book.