I had few jams on feeding ramp w. my 212gr hardcast ammo: http://i1135.photobucket.com/albums/m621/robert91922/10mmAuto_Target212/Target212_Cast_1.jpg http://www.glocktalk.com/forums/showthread.php?t=203164&page=5 (post No.3 on 5th page) Looking closer at latest jams I found out that rounds have too much brass edge on the top or better said they were not crimped enough. Rounds are 0.420 wide in the middle but at crimping point (the edge) I measured 0.423 or 0.4225. I adjusted crimping die and fixed the crimp to 0.420. Bullets are hardcast HB23 hardness so I don't expect any pressure increase due to a bit narrower end of case. This week I will chrono them again anyway just to see if there are any signs of overpressure or change of speed. In the meantime, all my other ammo (jacketed or plated) works flawlessly, so should I set back crimping to 0.423 or leave it on 0.420 for future use when I spend all of the rest of my 212gr hardcast bullets?