Did some shooting with the Ruger Mk4 Lite

John W
[subject]
Sunday, April 08, 2018, 13:37 (3076 days ago)

After the monthly meeting I headed out to the range to do some shooting. I was a tad concerned the last time I shot my new Ruger Mk4 Lite.

It seemed that for every two or three magazines, I'd get a failure of some kind. Either a failure to feed or a misfire. Initially I attributed it to the newness of the gun. It had to break in, so to speak. A second trip was worse in a way but I have to be blunt and attribute it to some twenty plus year old lead ammo that has a lot of gloppy lubricant on it. I figure that it would be relegated to revolver or manual repeater use only. Just burn it up and move on, so to speak.

I then figured that after a cleaning and use of brand new Winchester HV ammo rated at 1300 fps would be the key to the kingdom of reliability.

So again at the range it appeared to run the same pattern. About one per two to three magazines for some type of failure. I did inspect the misfired round. It does appear to have a light primer strike. A dent but not a deep one for a lack of a better term. Other shooters concurred with the observation.

i did a bit of checking on the net and it seems to be a problem with the MK 4's. The solution some have found was to get a TandemKross titanium firing pin and eagle claw extractor.

So. Should I go the Tandem kross route? Send the gun back to Ruger? Any other suggestions?

John, rule #1..NEVER EVER believe any crap you read on some

Gary Reeder
[subject]
Sunday, April 08, 2018, 14:01 (3076 days ago) @ John W

of the online site. They are mostly garage gunsmiths who know diddly about what they spew forth.
Rule #2..send the gun back to Ruger along with a couple of rounds of ammo that misfired and let them fix it. Relying on aftermarket gimmicks just wastes your money.

One thing you might try before you send it back is clean the recess in the chamber where the rim sits. If you have been shooting that soft shit ammo you can get some lead down in that recess and that acts like a buffer. When the firing pin hits the rim the rim mashes into that soft lead and gives just enough to cause a misfire. make sure that recess is clean and that the rim of the round drops down into it fully.,

Another tip is never ever shoot that black nose 22 LR ammo in any semi auto. Always shoot the copper or brass colored ammo. The black nose is fine for bolt actions or pumps but never in a semi auto.

TRIPLE AMEN!!!

JT
[subject]
Sunday, April 08, 2018, 15:44 (3076 days ago) @ Gary Reeder

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