I have done some research on this and on another board it was suggested that I would find no better place to answer this question. I am shooting a .575 500gr minie ball. I have ready that the suggested amount of powder is 60-70 grains. I have shot mine between 60 and 80 grains and I seem to like 80 grains. My brother-in-law shoots 90-100 grains on minies in his .50. The person who pointed me here said that people compete with these shooting 45 grains at 100 yards. Hodgdon has their charts showing muzzle velocities with 80 grain charges. I am using T7 powder not real black powder. Please keep in mind I will be hunting with my rifle. I am practicing at 100 yards mostly.
The real meat of the question is why is 60 to 70 grains recommended? Are there issues that I will have shooting above that? Basically why is whatever the best powder charge the best?
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