I have an encore stainless and it got put away without a proper scrubbing at end of 2019 season and now is corroded pretty good. Been looking for good ways to remove corrosion been thinking putting a cleaning rod with like a bore brite paste on it but also thinking soaking it in pb blaster or creeping crud and plugging the muzzle and letting it soak and using cleaning rod with good bronze brush on it chucked in my drill to power scrub the barrel versus running the cleaning rod by hand? Good bad or is it bad for the bore to use the drill?