I suggest you buy a bottle of Lehigh Lube & load it fairly wet & that will eliminate you wiping at all between shots when hunting, you can still get a tight patch/ball down the barrel & your group size will most likely be 1/2 of what it is right off the bat. The Lehigh drys promptly so you basically end up shooting a drylubed patch & they are the most accurate combo's I have ever acquired out of a ML. Then work on a charge what closes it up even more.
As for swabbing when hunting. When I shoot at a deer I automatically reach in my pocket & grab a dark blue or dark green precut tee shirt patch I have in there & stick it in my mouth & get it good & wet, swab the bore with the jag already attached to my RR, all the while watching the deer I shot at & etc. (I swab after shooting because I am using a greased patch & a very tight ball/patch combo) I swab down & back One Time & it is not a real tight jag/patch combo, but actually just slightly snug, with a modfied jag, so it pushes past the cruds & gathers & pull the excess cruds out on the outstroke. You can Easily do this without looking after practicing at the range for a few times. When I am satisified what the deer is doing, then I reload. This BS about reloading & getting off another quick ML shot on a deer is just that.... B.S. & unnecessary. All you do is hurry & make another poorly placed shot... Be a sport about it, make One Good Shot, a good clean direct one in the broiler-room shot.... then go get your deer.
Also, know your limitations. If you know you can make a accurate kill shot at 50 yards, fine. Don't take the 75 yard one, let it go & wait on another day when you are better or the deer is closer. I know VERY FEW people that can hit a 6" kill zone off hand at 100 yards. In fact, you take a dozen average hunters & you would be lucky to find 5 out of the 10 that could do it with a HP rifle and scope, let along iron sights & a ML.
Years ago I used to put 4-5 gallon milk jugs in the back of my truck when we went deer hunting. At the end of the day we would set them out at 100 yards. You would be simply amazed of how many guys cannot hit those milk jugs.....
Find a load wthat will cut one hole at 25 yards & under 1" at 50 yards & then you can play with other lubes & bullets. It is IMPORTANT you do all of this test shooting off a bench with sand bags, we have to get the gun to shoot first, then work on your shooting. Good Luck.