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This is a discussion on GP100 crown within the Gunsmithing forums, part of the Firearm Forum category; Has anyone known of a successful re-crown of a GP100 without sending back to Ruger? What would be the correct or better angle?...


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Old March 20th, 2017, 11:54 AM   #1
 
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GP100 crown

Has anyone known of a successful re-crown of a GP100 without sending back to Ruger?
What would be the correct or better angle?



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Old March 20th, 2017, 12:30 PM   #2
 
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I know LOT'S of "experts" will chime in and say sure you can do this yourself. However if it were mine, I would tell myself "hell no" and get on the phone and call the folks at Ruger and ask them to look at it and fix it if needed. Probably would not cost you a dime, take only a few days and you will know that it is done right. I own a GP and NOBODY but Ruger is getting their mitts on her.
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Old March 20th, 2017, 12:59 PM   #3
 
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Perhaps you should look at the discussion on this other thread of this general forum:

What's up with the crowns on all my ruger pistols?

Some of us don't understand what all the hullabaloo is (all of a sudden) about revolver barrel crowns.
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Old March 20th, 2017, 05:45 PM   #4
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arweightfourfourtytwo, I realize many people don't have the knowledge, skills, or self confidence to work on their own guns but crowning a muzzle is about as simple as you can get. Anyone with the mechanical aptitude of a carrot can do it.

1. Buy a 45 deg cutter with brass pilot. Part number 080-948-380WB, $101 at Brownell's. See: BROWNELLS 45 MUZZLE/CYLINDER CHAMFERING CUTTER & BRASS PILOT | Brownells

2. Buy a 45 deg brass muzzle lap. Part number 080-624-045WB, $15 at Brownell's. See: BROWNELLS 45 BRASS MUZZLE LAP | Brownells

3. Hand ream the crown using cutting oil. The pilot will keep the cutter centered in the bore. When you see a fresh cut all the way to the lands, stop.

4. Use the 45 deg brass lap in an electric drill to finish the job. Once the fresh cut is polished, stop.

For the price of the tools, a gunsmith can do several guns so it's not the difficulty level, it's more about the cost. If you want to recrown several guns, it will be more cost effective to own the tools. Before you even think about ordering the tools, take blackvoid's advise and look at the referenced thread.
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Old March 21st, 2017, 09:04 AM   #5
 
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Thank you very much!

Saved me $75. A gunsmith advised that the end of the barrel was not a flush 90 degrees and needed re-facing and a new crown cut.

In my younger years I always shot at 25 yards or more but with my old eyes I can't shoot good past 30' anymore. LOL, Not worth spending my retirement money on.

I see that the GP100 Match Champion has a 11 degree muzzle crown (assuming sacrificing the removable front sight) but I now know a slick marketing gimmick.
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Old March 21st, 2017, 03:57 PM   #6
 
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Originally Posted by Rob MacRuger View Post
but I now know a slick marketing gimmick.
One of my favorites -
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Old March 22nd, 2017, 03:17 AM   #7
 
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Ditto to what Iowegan said. I prefer a 11 degree crown, but that's more personal than anything else. Flush cutting adds more tooling costs so you're saving even more money.

Jeff
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