Posted this earlier in the week in introductions. Reposting here to see if anyone has any more ideas. I am posting another that is a follow-up to this. Thanks. I read a post before I left the range tonight suggesting that someone's first question on this site should be posted in the introductions forum. And that you should say something about yourself. Name is Joe and I'm 61 years old. Have a slight disability with my left leg from a bone cancer operation in 93. Got reintroduced to shooting and hunting about 6 years ago. I work full-time. Anyway, I have a Ruger SR40 and 40c purchased in that order 5 or six years ago. Last week I took the 40c which is my carry gun to the range for some practice. Loaded 4 15 rd mags of Winchester white box 165 FMJ. Lots of misfires (light strikes) i guess you would say. I think on average about 3 per mag. I reloaded all misfires and they eventually all fired. So I wasn't sure if it was an ammo problem or gun problem. Did a little research watched some you tube and decided to clean the striker. No problems getting it out or getting it back in. Picked up a couple of boxes of Federal Champion 180 gr FMJ. Went to the range tonight. 2 mags of federal 2 of WWB. Shot the first mag with winchester. Ejection problems. It would eject the spent round, load the new round but the trigger would not be cocked. I would say 3 ejections like that on first mag. Fired the next mag with the federal. All 15 rounds no issues. Thought it was ammo problem and the gun was acquitted. Fired the next mag with WWB same problem same frequency. Fired the next Federal mag ut oh same problem. Same problem. I than fired the 9 round mag that I carry with PDX1 ammo. Same problem. I would really appreciate some help. I really do not want to send it to Ruger and really really don't want to have to buy a Glock. Thanks for any help anyone can give.