I prefer loose powder. I have shot pellets in all my rifles and loose powder has always been more accurate. IMO it is all due to pressure. Pressure is basically a function of two components. Volume, and mass of powder. IMO the problem with the pellets is that the volume is inconsistent when you use pellets. I believe the pellets loose their consistency when they burn for a few reasons. I believe the pellets partially smash when loaded, so load volume, and burn rate are affected by the inconsistency of the pellets.

IMO the only reason pellets were created was to make it easier for ML shooters. And the powder companies can charge more for less. Tom.