I ran QL tables for 165 and 180-grain jacketed bullets and ran 44 Mag with Speer 240-grain Mag JHP and 255-grain case LSWC with gas check. In both instances, the powder that comes closest on charge weight bulk and pressure for matching velocities is Vihtavuori 3N38. It is usually within 5% of the same for all, at matching velocities from 4" pistol and revolver, respectively, though neither it nor any other powder match exactly. The load ratios and charge weights are on the smaller side for a given velocity, and in the 10mm, it produces fractionally lower peak pressure, but in the 44 Mag, it produces about 3% higher peak pressure. This is an example of why relative burn rate can't tell you a valid ranking that applies across all cartridges and bullet combinations.