I've been shooting up some 185gr LSWC rounds that I have left over from my 1911 days out of my Glock 21. I noticed that there is just a little bit of leading forward of the chamber. Luckily, the rest of the barrel is perfectly clean. Only reason I'm shooting them is just to shoot them up. My local stores don't carry Chore Boy, but they do carry Scotch Brite copper pads. Will these work for removing the lead? These: [ame="http://www.amazon.com/3M-Scotch-Scrubbers-Sponges-Scrubbing/dp/B00JVXZB2O/ref=sr_1_7?ie=UTF8&qid=1400353763&sr=8-7&"]Amazon.com: 3M Scotch Brite Scrubbers & Sponges (Copper Scrubbing Pads 2Pk): Kitchen & Dining@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41Y0uTFHctL.@@AMEPARAM@@41Y0uTFHctL[/ame] On a side note, is leading near the chamber a sign of too much velocity or too little? These loads had no leading in my 1911.