New LC9, uncalled for problem.. Suggestions?

[santahog]

Got a new LC9 on Monday and got it out to start reliability testing today.. (Got it as a BUG)..
SOFT PRIMER STRIKES ON 2 TO 3 OF EVERY 6 ROUNDS/PER MAGAZINE!!!
Can't deal with that, obviously..
Anybody here have one that had that problem?
I didn't get in till after business hours, of course, so I sent them an email on it..
I used Lawman and S&B, but gave up after 50 rounds or so.. No point in going any farther with it.
It ran one magazine without issue. That one was just out of curiosity and I ran it faster than I could effectively aim it..
The rest of the time I used a normal but slow trigger pull and it just didn't want to do it..

It is accurate though..

[Bic]

Well, as I'm sure you've figured out, the problem would have to be with the spring, the striker (firing pin), the ammo, or the headspacing, any of which, in a new gun, would have me sending it back to Ruger with a few sample cartridge cases.
Very disappoinnting with a new toy I know, but...

[tombogan03884]

2 different brands I think would rule out ammo as the problem.
My first action would be to rear it down, give it a good cleaning and look for burrs in the areas Bic mentioned.
I would also measure the striker to be sure it was in spec, but since half the rounds fire properly I don't think that's the problem.
If you have a way to measure the spring tension I would do that as well, if not, if cleaning and deburring does not solve the problem I would arrange with Ruger to send it back.

[santahog]

I'll clean it up and run it again this afternoon if it doesn't get so hot that my glasses fill with sweat..
(I miss Maine... It wasn't hot... I had a gunsmith there...)

[tombogan03884]

It's plenty hot this week, whole area is mid to high 90's with 60% humidity.

[Sponsor]

[MikeBjerum]

This may have been asked and answered in a round about way, but I didn't pick up on it:

When you got the gun home from the store was it completely torn down, cleaned and oiled?

Modern techniques are better than 40 years ago, but there are still situations where a gun is not ready for intensive use right out of the box.

Second, did you try different ammunition brands.  Many guns will have issues with one brand or another.   Ammunition brands can fire, cycle and fly different in different guns.  My Ruger 10/22 (box stock) has two rounds that it is only about 90% with, one of my Mark III's will eat anything I feed it, but the other Mark III has one round that it will misfire at least once on a 60 round course of fire.

This is what makes owning and shooting guns fun.  They are simple mechanical devices that have more personalities and quirks than  a woman with PMS    I haven't been to the corner for a while, so this morning is as good a time as any to return.

[santahog]

It's plenty hot this week, whole area is mid to high 90's with 60% humidity.

But it doesn't last.. Down here, August is the hot month.. This is just "warm"..

[santahog]

This may have been asked and answered in a round about way, but I didn't pick up on it:

When you got the gun home from the store was it completely torn down, cleaned and oiled?

I field stripped, cleaned and did a proper lubrication on it. I use "Gun Butter". For me, synthetics work better just because of the dust/lint. Short answer is "yes".. 

Modern techniques are better than 40 years ago, but there are still situations where a gun is not ready for intensive use right out of the box.

Aside from cleaning it, what am I supposed to do?

Second, did you try different ammunition brands.  Many guns will have issues with one brand or another.   Ammunition brands can fire, cycle and fly different in different guns.  My Ruger 10/22 (box stock) has two rounds that it is only about 90% with, one of my Mark III's will eat anything I feed it, but the other Mark III has one round that it will misfire at least once on a 60 round course of fire.

I did. I ran Lawman and S&B. No appreciable difference between the two. All the light strike rounds I reloaded and eventually fired. I know it's not necessarily wise to do that but it annoyed me.. (You WILL shoot this, damnit!)

This is what makes owning and shooting guns fun.  They are simple mechanical devices that have more personalities and quirks than  a woman with PMS    I haven't been to the corner for a while, so this morning is as good a time as any to return.

The Remington has a reputation for just working.. That's why I picked that one, (the other "new" toy). This one was actually intended to fill a "need".
The best line I've heard about PMS was Ron White, talking about NASA and women having PMS in space. “Yeah there’s a problem with it. In zero gravity, the psycho bitches can fly!”

[MikeBjerum]

If you stripped it down and cleaned the firing pin and whatever they call the hole it slides through, made sure the spring was not binding, and that there was no drag on the striker system.  You did what is needed for a light strike situation.  As far as lube very light liquid is preferred over a high viscosity on things like firing pins and strikers. 

At this point I take advantage of the great customer service policies of manufacturers.  Call Ruger, box it up, and send it back.  Why mess with it, ruin the guarantees, and still wonder.  They guarantee 100%, so you might just as well start out that way.

[santahog]

They're sending me a new slide. I keep the guide rod/spring and barrel and send back the old slide. I asked if I could buy a second magazine ans made a comment about not being able to get that seventh round in it and he said he would drop a new mag in the mail too. That's pretty good Customer Service...
I asked if they had had that light strike problem with this and he said that they did a while back, but not recently. Maybe I got an old one? I don't want to get too confident in the fix, but I suspect this could rectify the problem..
Just as an aside, I'm treating this one as a "Left Handed" gun. Maybe my mind can accept shooting left handed that way, and it's intended to be where I can get at with my left hand, (should the need ever arise)..