I have a new G23 and was shooting at the range with a couple shooting their G27s. I kept all my brass and was given all the brass being shot up by the couple next to me. Today I am going through the once fired brass and discovered that many have burrs of various sizes from being ejected. I don't know if this was from my G23 or the G27s without making a another trip to the range. I plan to shoot again soon to see if I can eleminate my G23. My question is can I safely remove the burrs with a file or wire wheel without compromising the case for reloading them. The burrs differ from one case to the next. I have reloaded for about a year and a half for my revolvers. This will be my first time reloading for semi-autos. Also, who makes after market barrels and which ones do you like the best. This is going to be my next purchase. I look forward to your responses.