I had the same problem with SWC in my G17 and G27. They aren't even close to working. The empty jams up on the SWC shoulder below it in the mag. I don't see how they could work under any circumstances, yet some say they work fine. Both molds I bought for my Glocks are TC.
Drugs are bad because if you do drugs you're a hippie and hippies suck.
"If you kill enough of them, they stop fighting."-General Curtis E. LeMay