I'm not disputing that statement, it seems rather logical considering some of the data tables published in their manuals. Do you have any links to articles or videos which document it? Again, I'm not being combative, just curious. I've been a bit suspicious ever since I started seeing tables that lump bullets together "in the same weight range" and show velocities in nice round numbers, using very "neat" steps in charge weight. As I stated above, I am more skeptical about such data than I am about publishers which give data for a specific cartridge case / single specific bullet / single specific primer / single specific charge weight. I think that the powder makers plus Lyman win out on this score.And BTW, most if not all that produce load data have started using QL