NIB 610 - Misaligned Parts?

[Geeko]

I bought the new re-introduced 610 4in barrel to use in competition. When I first got the revolver, I had difficulty with opening the cylinder. It appeared something was catching. It turned out to be a loose extractor rod, not tighten to 45in-lbs? tightening up fixed that problem.

Next I normally set my trigger pulls to 8lbs. Factory tested out to be 10-11lbs. When I set the trigger pull, I normally put in Jerry Miculek's spring kit in ( main & rebound springs). I have done this with my 686's and 625(-3, -8)'s yrs ago and have used those models successfully at championships.

However, after the spring mod, set trigger pull, I was getting light strikes to which I had never gotten before with the other models. I thought to try an extended firing pin from TK Custom along with their moonclips thinking that maybe monnclips were an issue and to be sure in regards to the firing pin length.

I marked a specific cylinder and a specific cartridge to test which cylinder(s) were getting light strikes. Was it all over the place, or was the light strikes on a specific chamber(s). It turned out to be one specific chamber.

I sent the revolver back to the factory and they indicated back they replaced the main spring, rebound spring, and firing pin spring, and corrected end shake. Not too sure why all those springs would be replaced since they were all new and from well known sources. The end shake correction was an interesting point.

I have not gotten the revolver back yet to retest, but has anyone had this problem before? Would the end shake correction fix this specific chamber light strike?

 

[gerhard1]

My 986 had a problem with light strikes especially with Winchester and Fiocchi cartridges, and sending it back to the factory did nothing to fix the problem. This was not as big a problem with Federal and Remington rounds but it misfire on occasion.

Took it to a Departmental gunsmith in an Oklahoma town and he installed a longer firing pin and a heavier mainspring and it seems to be lot better. Further testing is needed before I feel confident enough to carry it but the situation is better.

As soon as I can, I'll shoot it some more, running about 100-150 or so rounds through it.

Believe me, I feel your pain.

 

[spdguns]

My 986 had a problem with light strikes especially with Winchester and Fiocchi cartridges, and sending it back to the factory did nothing to fix the problem. This was not as big a problem with Federal and Remington rounds but it misfire on occasion.

Took it to a Departmental gunsmith in an Oklahoma town and he installed a longer firing pin and a heavier mainspring and it seems to be lot better. Further testing is needed before I feel confident enough to carry it but the situation is better.

As soon as I can, I'll shoot it some more, running about 100-150 or so rounds through it.

Believe me, I feel your pain.

You're welcome Gary!!!

 

[steelslaver]

Yes end shake could well cause light strikes and failure to fire. Kind of like a primer that is not fully seated. The firmer something is when struck the higher the percentage of energy transferred to the point stuck. Instead of all the energy being used up on the primer part of it is used moving the cylinder forward. Plus if the cylinder is moved forward the primer becomes that much farther away from the tip of the firing pin.

Your parts got replaced because you sent the gun in with a complaint of light strikes, so they replaced everything to bring the springs all back to "factory" specifications. They sometimes even charge for stuff like this. Guys have sent in guns with he lock removed and the plug installed and got the gun back minus, plug and a bill for new lock parts. Gun was taken back to factory specs. It will happen just about every time. I wouldn't sent a gun back with non factory stocks either

 

[Gas tube]

I did the exact same thing you did and plan on using this for bowling pin matches.. #13 rebound spring and power rib main spring, extended TK custom firing pin..I have no problems.. Inside the frame did need cleanup a lot of machine marks and just rough..

 

[gerhard1]

You're welcome Gary!!!

Well, fancy meeting you here!! You did good for me, Dave.

 

[diggler1833]

Egad! I knew that streamlining the production process had cut out a lot of the skilled labor, but unless they are fitting the yokes with sledge hammers there shouldn't be any end shake coming out of the factory.

+1 on making sure that the revolver is returned to stock before sending it back. No need to run the risk of being blamed for the problem and having to pay additional money to return the gun to stock...only to purchase the parts again to mod it.

I hope that this turns out well for you.

 

[Gas tube]

What kind of moon clips were you using?

 

[steelslaver]

Egad! I knew that streamlining the production process had cut out a lot of the skilled labor, but unless they are fitting the yokes with sledge hammers there shouldn't be any end shake coming out of the factory.

Actually you need a little bit for the cylinder to turn smoothly, .001 is ideal. .002 acceptable. More than that is not and it is easily taken care off.

I have several newer guns and they all work fine, I don't have a problem with MIM, 2 piece barrels or moving the front lock. But, the factory does need to step up on QC. Just because thew gun goes bang doesn't mean its good to go.

 

[rosewood]

I did the exact same thing you did and plan on using this for bowling pin matches.. #13 rebound spring and power rib main spring, extended TK custom firing pin..I have no problems.. Inside the frame did need cleanup a lot of machine marks and just rough..

Dats purty.

 

[m657]

Years ago I had one of the prime now-retired smiths, "Vito", explain to me in gentle terms just why the Official Policy is to replace with 'stock' springs & parts. He took a few well considered sentences to convince me such was a rational process in spite of my surprise & irritation.


My own 610 has served for many years in range use with minimum of maintenance required. Good luck with yours.

 

[rosewood]

Years ago I had one of the prime now-retired smiths, "Vito", explain to me in gentle terms just why the Official Policy is to replace with 'stock' springs & parts. He took a few well considered sentences to convince me such was a rational process in spite of my surprise & irritation.

It would be nice if they would send your springs back though. Hate to spend the money and then lose them on the trip.

Rosewood

 

[BLUEDOT37]

...I was getting light strikes to which I had never gotten before with the other models.
It turned out to be one specific chamber.

Where you only getting "light strikes" or were you getting failure to fire/misfires also?

You didn't say & they don't necessarily have to go together.

.

 

[Protocall_Design]

How do you know you're getting light strikes if they don't result in misfires?

 

[minconrevo]

Factory will tend to remove non-factory parts on guns sent to them. Best to take them out yourself before sending them in, replacing with the factory original ones. If you request they reserve and return your parts at time of service they may or may not do so.

Too much end shake could have been the culprit all along. There has been an ongoing litany of length changes in firing pins, certainly in the aftermarket arena, in an effort to fix the problem generated by/blamed on frame mounted pins.