I have the PC model and it has done this from new.

I thought it would go away as it got broke in.

Right now about 3k through it with no improvement.

I cleaned it very well before last weekend.

I even removed the firing pin from the bolt and found very little dirt and it moves very freely.

After shooting this past weekend it still averages one FTF per magazine.

Sometimes I will go 3 mags with no problem and then 3 FTF's in one mag.

The brand of ammo seems to make no difference.

The CCi seems a little better but that may just be part of the randomness.

I made it a point to inspect the FTF rounds and the strike was less than on the empty casings.

I just wanted some input on what might be the problem.

It is completly stock with the exception of a NDZ SBR and oversized mag button.

If it was me I would find a new hammer spring and swap out yours to see if that makes a difference. Its a cheap part and not that hard to change out. Maybe your existing spring is a bit weak. You could send it in to Smith and Wesson but it would take much longer.

If I understand correctly, the PC model uses a different trigger than the other models. I could swear I remember reading where someone stated the manufacturer of that trigger doesn't suggest that trigger for the 15-22 as a replacement to the stock one. Sounds stupid but danged if I don't think that is true.

I had similar issues & worse with a Timney trigger. I would get FTF with light strikes plus would get FTE & stovepipes. When I switched to a CMC trigger, all problems went away. I never have failures of any kind anymore.

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FIDELITAS ET FORTITUDO

I wish I could diagnose your problem. Occasional and unpredictable issues such as this can really make you scratch your head and wonder what to do.

This is just an idea. It may or may not be any use. Take a look at the hammer/pin, etc. and make sure that everything moves freely. While the hammer spring is a factory item, possibly it could be the problem? Consider replacing it and seeing if that makes any difference. Also, measure the overall length of the firing pin and see is it possibly not correct, i.e., not full length?

If all else fails, contact S&W via e-mail and describe to them the problem you are having with your rifle. Given the many thousands of these rifles that they have produced, they've likely already dealt with this or a similar problem. Sincerely. brucev.

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Another thing to keep in mind is an overly lubricated firing pin can slow it down enough to induce problems.

The only lubricant that should be used in the firing pin channel is a dry lubricant like graphite.

Yup. I use either "Dry-Slide" or "Lock-Ease".

Both have a liquid conveyor mixed with powdered graphite which dries leaving only the graphite.

But, the Dry Slide comes with a couple of applicators, one being a 'needle' which is handy for itty-bitty applications. Lock Ease only comes with a plastic snorkel.

The Lock Ease is for maintaining locks of any sort.

Both are as slick as snot on a doorknob.

But less messy.

Good luck, Jeepinguy, and if all else fails, Smith will work on it for you.

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AKA: "Strange Tamer"

I suspect the PC trigger group. Rimfires need a lot of hammer strike that the PC trigger group (lighter hammer spring?) may not be providing. I haven't had a PC version in hand to look at but would start by seeing if a standard AR15/M16 hammer spring will drop in.

PC model uses a Rock River Arms 2-stage trigger. It is not any lighter than the regular model single stage trigger but you can shoot it more accurately if you use good trigger discipline. Both triggers will improve in the pull department with JP "yellow" springs. Neither should have light strike issues unless something is wrong even with the light springs installed. Clean the heck out of it then only put lube on the bolt rails and see how it shoots. PC model has a tighter chamber which can jam on ammo like CCI Stingers and sometimes on Federal Champion because both are slightly longer than normal .22LR ammo. Also applies to any other hyper velocity ammo like Stingers made by other makers.

Thanks for all the input.

I have a buddy that put a Slidefire on his 15-22.

That included a new trigger so he is going to give me the original trigger to try out.

That should narrrow down the possibilities.

Would that have been a new CMC trigger with the slidefire

keith