Do bone dry pellets cause faster leading?

.30 Impact was "loosing it" :( 12" groups at 123 yards. Found the moderator loose and clipping pellets. Tightened and got 6" groups. Maybe I better clean the barrel. WOW. Black lead wipe patches came out dozens of times. I have been washing all the pellets and drying them and then back into the tin. Thinking now that I have removed the chips as well as the factory lube. Went to a fresh unwashed tin and all is great again :)

5 shots,123 yards. JSB44gr at 909 FPS, :)
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I spray a ship load, I wash a tin or 2 then put them in a 1 gallon zip lock bag spread them out in the bag and spray a couple pumps, close the bag and move them around till I think they are evenly coated and put them back in the tins. I save the baggy for the next batch and so on. I can only guess about 15 large tins (350count) or more per bottle. JSB 34gr .25