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11-18-2010, 07:19 PM
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Join Date: Dec 2005
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Extractor chamfer method
What is your preferred method of chamfering an extractor on a S&W revo?
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11-18-2010, 09:24 PM
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You usually don't chamfer the ejector, just the cylinder mouths.
Trying to do the ejector risks damaging the ratchet and ruining the ejector.
Rounds tend to hang up on the chamber mouths, not the ejector.
To do the chambers, buy the chamfering cutter tool and guide from Brownell's.
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11-19-2010, 12:07 AM
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Quote:
Originally Posted by dfariswheel
You usually don't chamfer the ejector, just the cylinder mouths.
Trying to do the ejector risks damaging the ratchet and ruining the ejector.
Rounds tend to hang up on the chamber mouths, not the ejector.
To do the chambers, buy the chamfering cutter tool and guide from Brownell's.
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Yep, piloted chamfer tool, remove the extractor and chamfer the cylinder. Non-moonclip guns need the extractor edges square. Both to catch the rims for ejection and for the case to hesadspace off of once the cylinder is chamfered. On moonclip guns you break the extractor edges with a file.
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11-19-2010, 01:05 PM
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Absent Comrade
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While I've seen folks do it otherwise, I never chamfer extractors, except for the corners of each star point. One uses a piloted chamfer reamer, easily obtained from Brownells, to chamfer the mouth of each chamber (YES, each CHAMBER, not each "cylinder.") with the extractor removed. Then, I use a 6" mill ******* file to knock the sharp corners off each corner of each star of the extractor, to blend it in with the chamfer of each chamber. If you leave the extractor in place to chamfer chambers, you risk having the extractor running past a case on extraction, hanging up the works badly.
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11-19-2010, 02:21 PM
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Quote:
Originally Posted by 38-44HD45
YES, each CHAMBER, not each "cylinder.
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Excuse me.
Quote:
Originally Posted by 38-44HD45
If you leave the extractor in place to chamfer chambers, you risk having the extractor running past a case on extraction, hanging up the works badly.
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Yes, but the bigger reason is you lose the surface the case rim headspaces on.
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11-19-2010, 02:49 PM
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Absent Comrade
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Quote:
Originally Posted by tomcatt51
Excuse me.
No sweat. I just get annoyed with the confusion some folks seem to have between revolvers and internal combustion engines. I am the grammarian about whom your mother warned you. 
Yes, but the bigger reason is you lose the surface the case rim headspaces on.
Also an excellent reason, but you can chamfer enough to cause potential extraction problems and still leave enough shelf to headspace adequately. Some of the Custom Shop Smiths that are cut for moon clips, but will work without them, have a pretty good chamfer on the extractor star. My two 3" 681+ PC guns are so modified. Thus far, I've had no problems with them when used without moon clips, but they concern me a little. |
Please see preceeding, within the quotes.
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