I do run a 14 and I crater primers pretty hard. I could probably go lighter but I like the pull where it is. SA is down to a crisp 3ish and I think DA is rocking around 7, really smooth. I have put about 100 rounds of various defensive rounds (XTPs, HSTs, Gold Dots, maybe some others) through the pistol and I've never had a light strike. In fact I've never had a malfunction at all in the 2k I've put through it other than when I briefly experimented with a 6lb recoil spring and was cycling a bit to fast to effectively feed the next round. 8lb runs perfect for my 180 gr 40 minor loads at about 137pf, 11 lb runs great for major, and the factory 12 is perfect and surprisingly smooth for hot defensive rounds.