Can anyone point me in the right direction on how to remove the plastic sabot residue from inside my mz barrel?......I have tried 2-in-1 bore scrubber an most mz cleaning products that i have here.Never had this before an yesterday i was using some barnes expander mz (250gr) with 100grs loose pyrodex......swabbing every 3 shots.Started cleaning last night an noticed the plastic residue(its not very much at all.....i'm just anal about keeping it VERY clean)...may need to get some different sabots to shoot with that .451 bullet......any help will be greatly appreciated...thanks!!