loaded some 230 grain lead round nose .45. I shoot it in my G36 with a Lone Wolf barrel. I shot one magazine through the G36 and then 5 rounds through my G21 to check function. (I do not habitually shoot lead through the G21 because it has an OEM barrel.) When I collected the brass I found several that had "smileys" on them. I suspected the factory barrel in the G21, but it turned out that the Lone Wolf barrel was the culprit. The weird thing about this is that the LW barrel stopped producing this deformation after a few more rounds. The factory barrel never has done this. i have not seen this in 40 years of reloading. Anyone care to wade into this and tell me what might be going on? Wanna kill these ads? We can help!