Single Six 22 short testing

[Pat C]

Jim , Originally the .22 L.R. was .217 bore .222 grooves.

But the convertibles used the magnum bore specs.
.219 bore .224 grooves

Hollow base pure lead target ammo does the best I believe.
I'm about sure 22 WRF in a magnum cylinder would be the bomb. I might get a cylinder from Al .

[Pat C]

After a detailed clean of forcing cone and bore with JB Bore paste. I shot two cylinders of CCI MINI MAG off sandbag at 15 yards . As you can see only marginally better.

This one needs some major work for sure. Just need to decide how far to go with it.

[Pat C]

Delete double

[Scott Tschirhart]

I’m not sure how to shoot a revolver off a bag. Every time I tried it seems to get inconsistent results.

I know that Jim seems to do good work off a pistol perch. It appears that the pistol perch has been discontinued so I’ve never tried that either.

[Pat C]

I've had good luck with small leather bag I use. I think with this one it's just not. Shooter . Has to much sloppiness in its manufacture. Coupled with the larger WMR bore that's even a little toward max spec doesn't help.

It's possible an oversize base pin and oversize fitted cylinder latch retimed might solve it. But I'd say for best accuracy a new dedicated .22 L.R. barrel will need to be made.

Part of me wants to send it in to Ruger but I didn't buy it new so I feel like I'll need to pay either way. If I'm gonna pay I'd rather send it to master pistol smith Frank Glenn

But I I tear it down I've always wanted color case hardened frame hammer gate. So we'll see .

I think I will order the oversize pin and latch and see if that will help anything.

Crazy thing I thought about was to buy a WRF reamer and rechamber this cylinder to WRF ....

Many options.

[Pat C]

Finally took time to blueprint this single six using precision measuring . Everything is fairly liberal on tolerance side.
Chambers using small hole Guage. 227-.2275"

Bore is. 2245" grooves .2205" lands so it's toward oversize for .22 WMR.

Barrel cylinder gap is .006"
Ends hake is .002"

Base pin to cylinder is .0035" clearance.

The Big issue is the cylinder is out of alignment with the bore.
It fails the. 2185" range rod test .

The cylinder has. 010" rotational movement. One right side of the cylinder catch is untouched flat . If you rotate cylinder against that side . You can see the chamber wall as viewed from muzzle as much as .006-.008" app

If you rotate it to the opposite side it looks like edge of chamber is about flush with bore . Meaning it's probably .003- .004 " out of alignment .

When you cock the hammer each chamber you can feel just a light drag with range rod on right side. So it's over indexing chambers.

You can see the cylinder catch was hand fit on left side to help align but not correct way of doing it. As it sits when locked the tapered side is against notch .

I believe the latch window or cylinder notches are not in correct location. I'll have to get Kuhnhausens shop manual to see how he addressed this on Ruger. SA.

My old model cylinder catch is flat on each side and no alignment issues.

At this point I plan to remedy this myself but at least I know why this gun won't shoot.

[samsi]

With the plethora of dimensions that have to play nice together, picking up older revolvers (heck, new ones too) is always a crapshoot. I'm always pleased when I get something that performs well without having to tinker with it.

[Pat C]

I guess price dictates whether it's worth the chance. I gave less than price of a Wrangler for this one. I believe moving the window and fitting new oversize catch will correct alignment.

[Grizz]

Thanks for the details Pat, helps to learn how you diagnose revolvers. hope it works out. could you swap in another cylinder and see how it does? in the kind of trouble-shooting i do a parts swap is sometimes the quickest feedback . . .

[Pat C]

I thought about trying anouther cylinder . The one I have is etched matching number to this SS . I talked to Randall Power little while ago . He stated his latches are .0065" thicker on average than factory. Hopefully that will be just enough to shift alignment . There are other methods like moving the window. I did get Kuhnhausens shop manual ordered so see what options I can do.

[Scott Tschirhart]

A man could spend a lot of money trying to get a Single Six to shoot better and might end up where he started.

I think I would try several different brands of ammo if it was me. If no that didn’t work, I’d fire lap the bore and see what happens.

[Pat C]

No amount of ammo will do it , the bore is out .008 over indexed. Distorting bullets and or shaving them. I've already shot every ammo that's out there except for ELEY and Xact.

[Scott Tschirhart]

No amount of ammo will do it , the bore is out .008 over indexed. Distorting bullets and or shaving them. I've already shot every ammo that's out there except for ELEY and Xact.

I’m sorry. I did not understand that you had already figured this out. I apologize.

[Pat C]

Not a problem at all , I'll get it solved soon .Need to get it apart to see exactly how far the cylinder catch window is off.
It's possible some form of shimming/ moving window an be done and still use factory catch.

Once it's apart I can center the cylinder/ barrel perfectly then sight through from bottom of frame to check window location.
I have a copy of Kuhnhausens shop manual coming to see what the fix is other than oversize catch.

[Bill in Oregon]

That was a righteous idea, Jim -- modifying your 1858 that way. I wish the Remmies weren't so cruel to the knuckle on my middle finger.