Marshal Tom
Member
Steelslaver, I sent you a PM.
Model 10 and 27 cylinder modification for 9mm?
- Thread starter MuayThaiJJ
- Start date
OP
MuayThaiJJ
Member
thanks, do you know anyone who would do this conversion? Apparently tk customs doesn’t do the model 27 or 28 conversion
Sent from my iPhone using Tapatalk
If you converted a N frame 357 cylinder to 9mm you would need to have the clips custom made. Someone with a water jet or small laser cutter could make them if you provider them with an accurate drawing in the correct format. Not as easy as it sounds I wanted to get a small spring made for 1st model rip ups and never got anyone do do it for what it would be worth.
To convert a 357 or 38 special cylinder you must ream the chambers with a 9 mm reamer then clearance the extractor star and center section of the cylinder to the profile of the clip, deep enough for the thickness of the clip.
The only place I found that has 6 shot 9mm clips that fit a K frame is TKC. Nobody does them for an N frame that I know of.
Someone with a 3D printer could make some plastic ones, but I don't know how they would hold up.
I suppose you could mill some out of spring steel, but what a pain in the rear.
To convert a 357 or 38 special cylinder you must ream the chambers with a 9 mm reamer then clearance the extractor star and center section of the cylinder to the profile of the clip, deep enough for the thickness of the clip.
The only place I found that has 6 shot 9mm clips that fit a K frame is TKC. Nobody does them for an N frame that I know of.
Someone with a 3D printer could make some plastic ones, but I don't know how they would hold up.
I suppose you could mill some out of spring steel, but what a pain in the rear.
Where is the extra cylinder hitting when you try it? Your saying it won't go with the guns original yoke or with the yoke the spare cylinder came with. If the front of the cylinder hitting the barrel or is the ratchet hanging up on the recoil shield?
If you stick the cylinder in place WITHOUT a yoke does it fit?
Ratchets vary in thickness a couple thousands. Have you tried 2nd cylinder with original cylinders ratchet? They both have the odd arm type tight? If both cylinders are from the newer long window J frames it should. Usually the problem is the yoke tube length need adjusted. Usually the length of the cylinder itself is not the problem. Some times it is a drop in and sometimes not. It could be something as simple as the ejector rod being a bit to long. Kind of hard to tell without gun and cylinders in hand
A new J frame cylinder will not fit in an older J frame. The only messing around I have done with the newer J frames is mounting taking the cylinder and barrel from one in 38 special and mounting a 32 barrel and 32 H&R cylinder reamed to 327 to make a 327 mag out of it.
Part of the reason it cost is when your milling them for the clips there is set up time in the machine, then with K and I am sure J frames you need to put the cutter right in between and along the ratchet teeth and if you mess up that ratchet would be toast. Plus, TKC charges like $90 for 10 clips so take away the clips and the work is $260.
I do the stuff I do because I enjoy tinkering with it and I never charge myself. If it was my JOB, I would want good money for my efforts.
racer19j
Member
In my opinion, the best cylinder to convert your model 10 to 9mm would be a model 17 (22lr) cylinder. It’s not as easy as using a model 10 cylinder but get a much better cylinder when you’re done. You have to machine about .060 from the breach end of the cylinder, use a .38 extractor, weld up the pin holes, machine the extractor recess deeper, drill new pin holes using the new extractor as a guide, install new pins, ream the new cylinder to the correct depth to headspace on the case mouth and machine for moon clips with the correct headspace. I don’t have a model 10 but did this on 2 model 64’s using 617 cylinders. You end up with chambers that are fully machined without voids and full length throats. Can shoot any ammo from mild to wild. They shoot the same POI as .38 Special.
I do not understand why you would need to use 38 special extractors if you started with a K 22 cylinder. You could machine the K22 extractors. Less material to remove with a K38, butt no pin alignment hassles.
The .060 your machining off is the recess for the rim. Once that is gone they are the same thickness as a 38. I have made several of them into 327 cylinders. I even fit a k22 extractor to a model 19 cylinder I had sleeved and reamed to 22 lr to make a model 53, 22 cylinder. I did not need to change the depth on the model 19 cylinder.
The .060 your machining off is the recess for the rim. Once that is gone they are the same thickness as a 38. I have made several of them into 327 cylinders. I even fit a k22 extractor to a model 19 cylinder I had sleeved and reamed to 22 lr to make a model 53, 22 cylinder. I did not need to change the depth on the model 19 cylinder.
Last edited:
Wasn't there a Factory 6 shot 38 super Model 627 a decade or so ago?
racer19j
Member
I used the .38 extractor because there is very little material left between the charge holes when they are reamed out for 9mm. It’s possible that they could break into the pin holes. Also, I was able to find a new .38 extractor so I could fit the cylinder without using shims and then fit the lugs so the timing is correct. I cut the depth of the cylinder about .010 deeper so the extractor would be that much thicker making it stronger when machined for moon clips. The new .38 extractor has extra material on it for fitting.
Similar threads
