Okay , let me tell you about MY 220st.
Bought used for 750. After a few weekends if shooting factory ammo it began to FTE , leaving the spent case in chamber and unseating the next round in mag.
Cleaned it to a gleam , same prob. Spent hours on the 'net and decided it ws mags. Bought 2 new Sig mags @ $38 each. Ouch. Same problem.
Sent it to Sig. Returned with letter saying gun was fine. Got lecture on limp wristing tp boot.
Brought it Plate shoot @ DF&G , where some real gun enthusiasts got a look at it : " Extractor prob for sure. lemme call my friend at Sig , Jeff."
Jeff is a stand up guy. He came to my range the next week , replaced extractor , gave me a Sigarms cap , an sincere apology , a few boxes of reloads , and an hour of coaching on speed shooting.
2 weeks later it started again - FTE.
I shelved the gun to wait for the steam ikn my head to clear. Sent it back to Sig. Same letter. " This gun is fine. "
Talked to Carl. " I have a hex or a lemon. I want to sell it back to you , I realize I will lose a large portion of my money. I'd rather have a beater 1911 than a prestigious "to hell & back reliability" " most accurate out of the box " Sig that breaks every 200 rounds. ... but first I needed to fix it again.
A few weeks later I drove the thing to Sigarms , re-explained the problem and they actually did some work on it this time. A few dremel marks , a few " retensioned the slide" comments etc. and it finally ran well.
3 weeks later the hook of the extractor broke clean off while shooting pairs.
All of this was factory new ammo.
Mailed to Brownells to replace the extractor myself. They sent me the wrong one. .... grrrrrr.
I have a job. I get to shoot one day a week. I no longer trust Sig repair service at all period. Every step in this ordeal is at least wait until next week or longer before schedule allows me to do anything about it. Very frustrated.
That said .. I have an old worn , scratched and dinged SigSauer p228 made in West Germany with uncountable rounds through it. Never once hiccuped.