How to improve new Ruger Mark IV reliability/short-stroking etc?

[Ignition Override]

My first brand-new IV Standard (-nib: retail-) had maybe four minor issues in 2,000 rds. It was bought less than two years ago. I was impressed. The same types of ammo used in That gun are still used in this Newer gun.

This latest IV Standard (-nib: retail-) has a FTExtract or FTEject/doublefeed maybe 1 in 20 with 'blue' box Federal, 1 in 30 with Fed. Automatch, and a bit better with Rem. Golden Bullet.
All ammo stored in dry, tight cans, inside an air. cond. room.

* Even the hottest CCI Minimags can cause a couple issues in every 100 rds.
Having left the slide locked open for the last few days might have helped, but just a little, with the various brands.
No stovepipes--just the issues mentioned. What might improve this newest Ruger?

Did Ruger lengthen/strengthen the recoil springs in the more recent Mark handguns, causing a tad too much resistance to the blowback operation?

 

[earlthegoat2]

My first action would be to replace the extractor with an aftermarket one such as a Volquartsen and then try a different magazine.

Then maybe try some springs.

Actually my first action might be to contact Ruger.

 

[sabbfan]

If it’s that new I’d let Ruger take a look at it for free before I spent my own money on it. I’ve spent money upgrading my MKIV but it was for things I wanted not necessarily needed. If it’s a matter of a relatively new pistol functioning properly I’d let them make it right.

 

[barnetmill]

Look closely at the rear of the chamber for a ding or some other roughness in the chamber.

 

[Frankl03]

Sorry to hear your having trouble with your new ruger. I agree with Earl, add the valquartsen extractor. Your gun will run better with it anyways!
I've had a MkIII hunter for at least ten years and it never misses a beat. Also for some reason it loves those rem golden bullets.
Good luck solving the problem.

 

[briansmithwins]

I’d talk to Ruger before changing anything. You bought a new pistol and one of the advantages is it has a warranty. Changing parts can screw that coverage up.

BSW

 

[newfalguy101]

A brand new gun should run like a brand new gun.

Contact Ruger as others have said

 

[Ignition Override]

That idea should have occurred to me when I assumed that they might have designed over-stiffened/lengthening of the latest recoil springs.

Thanks.

 

[ericuda]

Contact ruger, leaving the slide locked will solve nothing.

 

[sparkyv]

This:

Actually my first action might be to contact Ruger.

If it’s that new I’d let Ruger take a look at it for free before I spent my own money on it

I'd talk to Ruger before changing anything.

Contact Ruger as others have said

Contact ruger, leaving the slide locked will solve nothing.

 

[bannockburn]

Still anther vote for contacting Ruger to find out what they think the problem is. You have a warranty; might as well use it.

 

[Ignition Override]

Beth at Ruger Pistol Service is shipping a new extractor and recoil spring.

Back-up plan (later) would be to send the gun to them in AZ.

 

[243winxb]

The recoil spring can be binding/rubbing against the top of the receiver. Adjust it.

 

[243winxb]

Gun should work with a factory spring..

But this would seem to allow a lighter recoil spring.. https://store.wirthweinguns.com/Volquartsen-VS3-Recoil-Rod-Spring-Assembly-VC3RS-p/vc3rs.htm

$18.

 

[Okcafe86]

This is going to sound crazy, and I'm not saying this is the case, just a personal experience. I had a similar issue with the same model and it was fixed by reducing the amount of oil I used in the bolt. I tend to use a generous amount of oil on my weapons in the case of this model it did not like it at all. When I started using only a drop or two for the entire bolt my problems went away.