What is the diameter of .44 magnum cylinders?

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warnerwh

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I would appreciate the chamber dimensions for a .44 magnum revolver.I haven't been able to find them. Looked in a couple of reloading manuals and they don't have those specs either. Thanks in advance.
 
Looked in a couple of reloading manuals and they don't have those specs either.

You really don't think they are going to measure every brand and model of 44 mag gun out there do you.... they are in the reloading business not gunsmithing. Each brand will have a different diameter and the chambers will vary to a degree, however each "should" be cut to SAAMI standards as close as possible.
 
What measurement are you looking for exactly?
Most will be different even with the same manufacturer depending on the model of revolver.
Sometimes one cylinder may have different sized chamber throats.
 
SAAMI specifications for both chambers and ammo/dies are a range, not a point; anything inside the range is fully in tolerance. No maker will have any avereage difference one way or the other. It's rare for individual chambers in the same cylinder to be exactly the same but they are all likely to be well within tolerance.
 
Get some lead round balls .433 dia and push them thru each chamber which ever one is largest that's what you size your bullets to,assuming you are using lead/cast bullets.
Shooting lead/cast bullets you want to size to your chamber mouth size unless thy are really over size otherwise .430-.431 dia is what most size their bullets to. you won't find that all chamber are alike due to variations in manufactureing techniques
 
If you measure the back end of the cylinder (nearest the firing pin) you'll get measurements of around 0.460-0.462". If you measure the other end, you'll be measuring the throat diameter and it will usually be around 0.432" or so. But they will usually vary from chamber to chamber by 0.001" on the same revolver.
 
Thank you guys for the info. I want to polish the chambers of a gun and wanted to see how much room I have to play with.
 
By all rights the cylinders are fine. I do things like this due to some neurosis I have. A healthy buff is all they are getting but my polishing compound does have a tiny bit of abrasive which could take some meat off.

If my dimensions are maximum allowed by SAAMI I won't touch them. That's why I asked the original question.

You don't want your cylinders mirror smooth I believe anyway. The little bit of machine marks help hold the case in place during discharge. Someone please correct me if I am wrong.
 
A lot of competitiors used to polish the chambers of the revolvers they used to make it easier (quicker) during reolads. I think some still do it for the cowboy stuff. I had a PPC revolver and the chambers were pretty smooth, not sure if they were polished but the casings dropped out with ease. Of course, my 686s did the same thing.
 
Polishing chambers my way

Here is the method i have used for the past 25 years in cylinders from .22lr to .44mag:
1. Get a tube of flitz / maas metal polish.
2. Install proper size patch & slotted tip on cleaning rod
3. If cleaning rod is a 2 or 3 piece, then unscrew the front piece & chuck up in a variable speed drill.
4. Smear the metal polish on patch & insert into chamber
5. Use drill to spin patch inside the chamber--slow to moderate speed. Repeat on each chamber,
6. Remove patch & repeat using clean patches with no polish until patches come out clean.
7. Ta-da---you are finished !!! Do the same inside the barrel, but don't use drill to spin the rod.
 
Mr. Warner

If you must have a precise measurement on the diameter of .44 chambers, i will mic out the chambers on my 1976 model 29-2 & send these to you. Please request by private message if i may be of assistance to you.
 
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