I spoke to Mark also about this just the other day. I asked why the maximum load for loose powder was at 100gr. and not at least 120-130gr. of loose powderto put it about equal with a charge of 150gr. of Pyrodox Pellets. He assured me the ML I was refering to, the ACCURA, would indeed handle this charge of 150gr. of loose powder, but in there testing, even with the longer barreal, that the powder would;nt fully burn and thus being too much for powder that was'nt needed. And he also said to get the best results of loose powder I would have to use a cronograph to test the velocities of the higher powder charges, and when the velocities started to level off with say a powder charge of 130gr.++ to then back off on the powder to find the happy medium that suited the ML. As I have learned and heard from many of you on this forum, a Magnum charge of 150gr.'s of loose powder does affect accuracy and in most cases is too much and overkill for a good shooting load. It's all user preferance, but why use a Magnum load if it is'nt the best load. Ron