Had my G21 from 1990...there abouts. Shot about 5000+ 220 gr lead semiwadcutters thru it...target loads and never had a problem. Now that I am in Miami, I here that GLOCK says NOT to use lead! Strange....never had a problem. So I got a Lone Wolf extended and ported barrel for it. The barrel finally broke in after about 400 rds. I was shooting 200gr lead round nose over 5.8gr of 231. Shoots great but super loud! Anyone else using lead in their GLOCKS?