Since I own the exact same Ml as you and just switched to T7, the first thing I will suggest is get the 209 primer conversion kit for your ML to switch from Number 11' s. I actually hunted with the pellet form this year but tried both and go back to the loose and try for next fall. First of all if you have a 100 gr pyro load combo work out, try 90 gr of T7 and move up in 5' s. I found 100 grains with my hornady xtp (240Gr) in pellet form shot very well but for some reason I lost a tad accuracy with the loose & 100 gr...hence why I stuck with pellets. Now I am not saying this will happen in your case but I just ran out of time and went with what worked/shot best. I would also reccomend you buy speed loaders for placing the loose podwer in your ML, they will eliminate a lot of problem while in the field. I found that bullet seating pressure with loose is more critical than pellets, again this could be just mio but I marked a line on my ramrod with liquid paper so I ensured I was properly seated each time. While on the range I found that dry swabbing the barrel after each shot held my groups and didn' t show any build up or leave the " crud ring" some have found with T7. I also run a patch soaked with breakfree down after cleaning let it sit for a few minutes and dry swab, seemed to make it easier to clean up for me. If you shoot a lot, remove the breech plug while hot and use something on the thread sites of the nipple and breech plug. Clean up is a snap, no smell and less kick.

Good Luck[8D]