Originally Posted by ChiknNutz
I am a bit confused. Upon review of my Speer manual #9 (1974), the difference between 2400 and Unique is negligible, yet you have to use almost twice as much 2400 as Unique. However, I know that 2400 is the original powder used to develop the 44 magnum by Elmer Keith (though 20-22 grains behind a 240 grain bullet). Still, I have ordered some 2400 after seeing it recommended by many as I am hopeful it will yield more magnum-like results. Can someone explain what I am missing?
Imagine it in slow motion. The Unique would burn with a "pop" but the 2400 would burn with a "poof". Instead of using a very short, steep pressure spike, the 2400 should have a longer, less steep pressure curve.
Check the graphic about 60% of the way down this page
Of course, I could be wrong.