I loaded up my first lead bullets from uniqueprecision and I am a bit concerned with barrel leading. I went through 1 mag for function test and notice at the rear(chamber) of the barrel there was quite a bit of leading present for about the first inch or so. Specifics: Glock 21 with LWD barrel (new) 230gr LRN Win 231 4.6gr (Hogdon lists the min/max 4.3/5.3) COL 1.20 Winchester once fired brass with Wolf LPP Crimp was medium using Hornady LNL and Hornady dies. I didn't chrono these unfortunately but it should have been somewhere around 730ish FPS which is pretty mild. The leading wasn't terrible but I didn't think that after just 13 rounds that it would be present. Is this normal or does it indicate a lube/powder problem? I may be putting too much of a crimp on the bullet after having to adjust the expander a bit more so that I wouldn't be shaving off the extra .001 and the lube would often seem to come off in rings from the shipping. I included a pic, kind of hard to see but you can see at the bottom of the barrel what I mean by the leading and a picture of the last round I made to see if the crimp is too much. I load my XTP and FMJ to 1.230 but it wouldn't feed in the glock until I got it down to 1.20 which is also what the hogdon site lists. Thanks. Wanna kill these ads? We can help!