BHG, the reason a ML should be swabbed is to remove the propellent residue as well. Most likely being a CVA with a CVA bullet you've found a effecient load persay and therefore the accuracy degrade is less than others but 10 shots is a lot and if using T7 Loose I would be swabbing way more regularily. The only ML I would shoot 10 times without swabbing would be a Savage ML 10II using smokeless powder.

I tried some a guy at the range was raving about I never found a reason to buy any as my accuracy and game performance has been outstanding with the Hornady Sabots - XTP & now SST.