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No such thing as GP100 with optimal specs

This is a discussion on No such thing as GP100 with optimal specs within the Ruger Double Action forums, part of the Pistol & Revolver Forum category; I bought a LNIB 4" Stainless a month and a half ago in a private sale. $500 cash. It shot accurate and ran perfectly, until ...


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Old April 21st, 2017, 02:36 PM   #1
 
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No such thing as GP100 with optimal specs

I bought a LNIB 4" Stainless a month and a half ago in a private sale. $500 cash.

It shot accurate and ran perfectly, until I noticed damage to the barrel face following 500 rounds and several reload practice sessions in my living room. The cylinder face was impacting the barrel face ONLY when opening or closing the cylinder, leaving a burr on the barrel face on the 6 o'clock and 9 o'clock portion. This is a common issue as I understand it, and even the customer service lady said it was happening on the stock revolver she happened to pull from the shelf to see what I was talking about.

Anyway, when I called customer service, the lady spoke with the product manager who confirmed it is NOT proper for the gp100's to impact the barrel face (in spite of her sample gp100 doing just that) and that they would repair mine free of charge.

Prior to shipping the gun to them, I measured the b/c gap with my feeler gauge and found that it was .005", within the acceptable .004"-.008" range that's always talked about on these forums. I left a note requesting that the service technician avoid increasing the gap to more than .006". Sure enough, when I got the revolver back, the b/c gap was increased to .008", but get this; the cylinder face is still contacting the barrel face in it's arc to open or close. The contact is very minimal and probably won't cause damage, but it has convinced me that if the technician had kept the gap at its proverbially golden .006", the impact of the cylinder face would remain severe enough to warrant concern.

I realize I'm nitpicking here and haven't even shot it since it's been back from the factory, but can someone on this forum attest to having a gp100 at .006" b/c gap that doesn't have the barrel-cylinder contact issue described?



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Old April 21st, 2017, 02:41 PM   #2
 
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I don't understand how you can say that what you see is a "common issue". Certainly not on this site, or the "other" one. My B/C gap is about .004, and there is NO "impacting", as you describe it. Something else may be wrong.
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Old April 22nd, 2017, 05:27 AM   #3
 
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I recently purchased an SP 101 and am very disappointed in the quality, fit and finish.

The cylinder binds on at least one chamber- and it appears there is some drag causing gouging on the recoil shield. Stoned the recoil shield to help resolve some binding.

The throats are very tight at .3565 and, since I prefer 158 LSWHP, I teamed the throats. Not necessarily a flaw- but not SAAMI spec.

The front of the cylinder face appears to be dragging on the face of the barrel - and when the cylinder is pushed forward, b/c gap is less than .001.

A lot of manufacturing debris inside and one sliver of metal was in the trigger assembly causing binding there as well.

The crown looked like it was cut with a chainsaw!!

I'd expect this lack of attention to detail in a cheaper firearm but the SP101 is certainly not sold at a discount compared to some brands.

None of these issues are irreparable but this is not acceptable for a NIB pistol.


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Old April 22nd, 2017, 05:48 AM   #4
 
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Quote:
Originally Posted by Buns of Guns View Post
I bought a LNIB 4" Stainless a month and a half ago in a private sale. $500 cash.

It shot accurate and ran perfectly, until I noticed damage to the barrel face following 500 rounds and several reload practice sessions in my living room. The cylinder face was impacting the barrel face ONLY when opening or closing the cylinder, leaving a burr on the barrel face on the 6 o'clock and 9 o'clock portion. This is a common issue as I understand it, and even the customer service lady said it was happening on the stock revolver she happened to pull from the shelf to see what I was talking about.

Anyway, when I called customer service, the lady spoke with the product manager who confirmed it is NOT proper for the gp100's to impact the barrel face (in spite of her sample gp100 doing just that) and that they would repair mine free of charge.

Prior to shipping the gun to them, I measured the b/c gap with my feeler gauge and found that it was .005", within the acceptable .004"-.008" range that's always talked about on these forums. I left a note requesting that the service technician avoid increasing the gap to more than .006". Sure enough, when I got the revolver back, the b/c gap was increased to .008", but get this; the cylinder face is still contacting the barrel face in it's arc to open or close. The contact is very minimal and probably won't cause damage, but it has convinced me that if the technician had kept the gap at its proverbially golden .006", the impact of the cylinder face would remain severe enough to warrant concern.

I realize I'm nitpicking here and haven't even shot it since it's been back from the factory, but can someone on this forum attest to having a gp100 at .006" b/c gap that doesn't have the barrel-cylinder contact issue described?
IMHO, the cylinder should not come in contact with the barrel when closing (or opening). My guess is the previous owner may have bent the crane using what I call the gangster flip (aka dumb@ss flip) to slam the cylinder into the closed position.

I don't think it's properly repaired.
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Old April 22nd, 2017, 07:18 AM   #5
 
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Quote:
Originally Posted by PD5523 View Post
I recently purchased an SP 101 and am very disappointed in the quality, fit and finish.

The cylinder binds on at least one chamber- and it appears there is some drag causing gouging on the recoil shield. Stoned the recoil shield to help resolve some binding.

The throats are very tight at .3565 and, since I prefer 158 LSWHP, I teamed the throats. Not necessarily a flaw- but not SAAMI spec.

The front of the cylinder face appears to be dragging on the face of the barrel - and when the cylinder is pushed forward, b/c gap is less than .001.

A lot of manufacturing debris inside and one sliver of metal was in the trigger assembly causing binding there as well.

The crown looked like it was cut with a chainsaw!!

I'd expect this lack of attention to detail in a cheaper firearm but the SP101 is certainly not sold at a discount compared to some brands.

None of these issues are irreparable but this is not acceptable for a NIB pistol.
Unfortunately your experience is all too common, quality control seems to be a foreign concept with Ruger these days, their guns can be hit or miss. Looks like you got a miss.

Where Ruger fails on quality control they excel in customer service, so I would voice your concerns to CS and ship the gun back. I guarantee you will get back a better gun than the gun you bought, at no cost to you.
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Old April 22nd, 2017, 07:54 AM   #6
 
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I took a closer look up against the light, and it appears that if I hold the cylinder to the rear, no contact is made. This leads me to believe that it is an endshake problem and not a bent crane; but I'm not ruling it out. Either way, I'm disappointed that Ruger CS blatantly ignored my request to keep b/c gap the way it is and in spite of this, STILL didn't fix the problem. I will take it to the range tonight to make sure there aren't other issues that need to be addressed when it gets shipped back this week.

Hopefully I'll get my hands on a proper GP100 in a couple of weeks.
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Old April 23rd, 2017, 06:34 AM   #7
 
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I have a blue, 4", 357, GP with a B/C gap of .004 and a SS, 3", 44 special with a B/C gap of .006. Neither one has any cylinder contact with the barrel upon opening or closing the cylinder. Something is definitely amiss on yours.

I've been a Ruger guy for 40+ years. I own both Ruger long guns and handguns but have to admit that Rugers quality control has went down hill lately. That's bad enough but to send a firearm to them to fix and still comes back wrong is unacceptable. It's sad to see what's happened to Bill Rugers legacy.
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Old April 23rd, 2017, 06:44 AM   #8
 
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This situation cannot be fixed overnight just as it built up over time it will take time reinstill the pride and passion of the workforce.
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Old April 23rd, 2017, 08:14 AM   #9
 
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A thought or two. I would check b/c gap from each side as the barrel at the forcing cone end might not be a true 90 degrees to the length. The front of the cylinder may not be true either and have some runout on the face. If the endshake is excessive (I seem to recall Ruger thinks 0.002-.005" is ok) they will probably put an endshake bearing in to reduce it which will increase the b/c gap.
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Old April 24th, 2017, 03:09 AM   #10
 
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cylinder gap on my GP-100's 357 mag

Quote:
Originally Posted by Rover View Post
A thought or two. I would check b/c gap from each side as the barrel at the forcing cone end might not be a true 90 degrees to the length. The front of the cylinder may not be true either and have some runout on the face. If the endshake is excessive (I seem to recall Ruger thinks 0.002-.005" is ok) they will probably put an endshake bearing in to reduce it which will increase the b/c gap.
I have a 4" blued 357 just back from Ruger rebarreled. It gauges tight at .006. My stainless 1740 model 5" after 100 rounds gauges at .007. I'm not seeing any contact on the face either of the barrels. I know it's a PIA to have to send it back again, but my one experience with CS was very positive and didn't cost me a penny. I'm learning a lot from you guys here.
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Old April 24th, 2017, 01:02 PM   #11
 
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Quote:
Originally Posted by Tater View Post
IMHO, the cylinder should not come in contact with the barrel when closing (or opening). My guess is the previous owner may have bent the crane using what I call the gangster flip (aka dumb@ss flip) to slam the cylinder into the closed position.

I don't think it's properly repaired.
Regardless of what has happened I do agree to me the OP's gun still hasn't been repaired property. I would again contact Ruger CS & get the revolver sent back. Now as to the gangster closing on cylinders of Ruger revolvers some idiots will do such a dumb A$$ thing. This will cause major problems, my question where the OP's GP100 was a private sale his gun might have been damaged from the previous owner.
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Old April 24th, 2017, 01:27 PM   #12
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Here's my GP100 6" stainless. All the specs were optimum right out of the box.

B/C gap = .005"
Endshake = .002"
Headspace = .010"
Cylinder-to-bore alignment <.001"
Cylinder throats (all six) = .358"
Bore = .357"

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Old April 24th, 2017, 01:43 PM   #13
 
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Gp100s are noted fro durability and you unfortnuately got a bad one let ruger fix it and they will
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Old April 26th, 2017, 01:13 PM   #14
 
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Quote:
Originally Posted by gqucool View Post
Regardless of what has happened I do agree to me the OP's gun still hasn't been repaired property. I would again contact Ruger CS & get the revolver sent back. Now as to the gangster closing on cylinders of Ruger revolvers some idiots will do such a dumb A$$ thing. This will cause major problems, my question where the OP's GP100 was a private sale his gun might have been damaged from the previous owner.
I'm convinced at this point that this is not the cause. The previous owner knew enough about guns to not flip the cylinder into the frame. He took very good care of it and the contact wear of the barrel face did not start until I began shooting it.

The endshake, as I measured it, is at least .006". I did this by holding the cylinder toward the rear and measuring the b/c gap, then pushing the cylinder forward and measuring the gap. If I'm not mistaken, endshake is the difference between these two measurements.

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Old May 2nd, 2017, 02:50 PM   #15
 
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Ruger customer service called me today and said that they are just going to give me a new gun. Somewhat surprised yet disappointed because now I'll have to get another handgun purchaser permit and go through NICS which is ridiculously slow in NJ.

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