just started shootin my cabella's hawken, I have been using 70-80 (777)grain loads with a lubed patch and hornady lead round ball, with just a few quick shots I had around a 3-4 inch group at 50-60 yds. I am planning on using for mule deer next season and not sure what I should use, I kind of like the round ball, I think these were .530 round balls... what would be the max charge I would want to use in this gun?? I have no documentation on it so I am kind of guessing around 110-20 grains of 777??? seems to like the 70 grain load though, bumped it to 80 and 90 and wasn't even getting it on paper??? any help/advice would be great,,,,been doin lots of reading but only getting confused with all the diff powders and bullet options out there,,, I just want a dependable set up to bring down a deer,,,