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Joined: Jan 2009
Posts: 3,058
Campfire Tracker
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OP
Campfire Tracker
Joined: Jan 2009
Posts: 3,058 |
Was shooting CTR at 250 yards from solid field rest and had two hit within an inch, but third was 2+ inches away. At first I thought caffeine jitters but had good press, etc. I looked the rifle over and saw a tiny chip on edge of rifling; so much for trusting the toe of a muck boot on the floorboard! Should I just try a round brass screw or mil surplus 7mm FMJ and lapping compound or get a Manson crowning tool. Trying to avoid expensive gunsmith trip with this "peasant rifle." The holes in the steel are from a BIL who didn't understand that Failsafes weren't Softpoints a few years back. [img:left] [/img]
�When in doubt, I whip it out.� Uncle Ted
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Joined: Dec 2004
Posts: 20,379
Campfire Ranger
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Campfire Ranger
Joined: Dec 2004
Posts: 20,379 |
Brass screw and lapping compound here.. by accuracy, it has worked pretty well for me.
I replace valve cover gaskets every 50K, if they don't need them sooner...
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Joined: Feb 2002
Posts: 32,044
Campfire 'Bwana
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Campfire 'Bwana
Joined: Feb 2002
Posts: 32,044 |
I use either my Lathe or the Manson Crowning Tool and wouldn't think of crowning my rifles with a brass screw .
A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.
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Joined: Jan 2009
Posts: 3,058
Campfire Tracker
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OP
Campfire Tracker
Joined: Jan 2009
Posts: 3,058 |
Gonna check Brownells now. Thanks bea and Rancho!
�When in doubt, I whip it out.� Uncle Ted
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Joined: Feb 2011
Posts: 5,460
Campfire Tracker
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Campfire Tracker
Joined: Feb 2011
Posts: 5,460 |
The lathe will produce the best crown. Not a very expensive job either.
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Joined: Feb 2002
Posts: 32,044
Campfire 'Bwana
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Campfire 'Bwana
Joined: Feb 2002
Posts: 32,044 |
The lathe will produce the best crown. Not a very expensive job either. Not so sure the lathe will beat the Manson Carbide Crowning tool , they both are running about equal in my opinion.
A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.
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Joined: Apr 2009
Posts: 1,017
Campfire Regular
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Campfire Regular
Joined: Apr 2009
Posts: 1,017 |
The brass screw worked for me on a used hunting rifle I bought.
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Joined: Apr 2009
Posts: 1,275
Campfire Regular
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Campfire Regular
Joined: Apr 2009
Posts: 1,275 |
I have the Manson crowning kit. I cut a fresh crown on all new or used factory rifles I acquire. If a custom rifle has accuracy issues I can't resolve, I'll try a new crown on them. The Manson kit is very accurate.
Bob
I met a French guy the other day. I asked him "Do you speak German?" He said "No." I said "You're welcome!"
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Joined: Mar 2007
Posts: 9,209
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2007
Posts: 9,209 |
You'll be out 3 but to try the screw.if Melvin can get good results with a ball burr, a screw should work in the right hands.
I would not buy something that runs on any kind of primer given the possibility of primer shortages and even regulations. In fact, why not buy a flintlock? Really. Rocks aren't going away anytime soon.
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Joined: Dec 2004
Posts: 20,379
Campfire Ranger
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Campfire Ranger
Joined: Dec 2004
Posts: 20,379 |
It does..
I chuckle at those who say it won't.
Maybe I should have called it a brass ball end cutter.
I replace valve cover gaskets every 50K, if they don't need them sooner...
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Joined: May 2011
Posts: 5,800
Campfire Tracker
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Campfire Tracker
Joined: May 2011
Posts: 5,800 |
I did have to cut 1/4" off the end of a barrel (worn crown from overuse and poor technique for pull-through cleaning). Used a file to get it square and smooth, and then blued it. No crowning - shoots great.
Whatever you said...everyone knows you are a lying jerk. That's a bold assertion. Point out where you think I lied. Well?
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Joined: Dec 2004
Posts: 20,379
Campfire Ranger
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Campfire Ranger
Joined: Dec 2004
Posts: 20,379 |
This chit ain't rocket surgery.
I replace valve cover gaskets every 50K, if they don't need them sooner...
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Joined: Mar 2011
Posts: 4,874
Campfire Tracker
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Campfire Tracker
Joined: Mar 2011
Posts: 4,874 |
I've had good luck with a standard 45-degree debur/chamfer tool. I'd give it a whirl and if it doesn't work, move on to something more elaborate. I'm not convinced a dinged crown is always the root cause of fliers so I'd be careful chasing the crown when it could be something else... unless it was a proven shooter before the ding.
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Joined: Nov 2011
Posts: 1,730
Campfire Regular
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Campfire Regular
Joined: Nov 2011
Posts: 1,730 |
Interested in the set up Rancho.
At least now I've got a valid excuse next time I shoot.....lol
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Joined: Jun 2007
Posts: 24,553
Campfire Ranger
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Campfire Ranger
Joined: Jun 2007
Posts: 24,553 |
2 types of people work on guns; Gunsmiths and idiots...
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Joined: Feb 2002
Posts: 32,044
Campfire 'Bwana
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Campfire 'Bwana
Joined: Feb 2002
Posts: 32,044 |
2 types of people work on guns; Gunsmiths and idiots... Plus 2 on that
A Doe walks out of the woods today and says, that is the last time I'm going to do that for Two Bucks.
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Joined: Jan 2001
Posts: 29,851
Campfire Ranger
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Campfire Ranger
Joined: Jan 2001
Posts: 29,851 |
Ever bumped into a bench rest shooter that did his crown with hand tools? There's probably a reason.
1Minute
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Joined: Feb 2001
Posts: 4,571
Campfire Tracker
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Campfire Tracker
Joined: Feb 2001
Posts: 4,571 |
Funny that expectations are so high for the CTR..... that a single sub-minute miss is cause to question system integrity.
I've touched-up a dozen crowns with a standard deburring tool and a brass screw.... its never hurt anything.... and has led to some consistency improvements.
You better pray to the God of Skinny Punks that this wind doesn't pick up......
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Joined: Jun 2006
Posts: 46,036
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2006
Posts: 46,036 |
I've touched-up a dozen crowns with a standard deburring tool and a brass screw.... its never hurt anything.... and has led to some consistency improvements. DS, can you describe your procedure for that?
A wise man is frequently humbled.
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Joined: Feb 2001
Posts: 4,571
Campfire Tracker
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Campfire Tracker
Joined: Feb 2001
Posts: 4,571 |
Take deburring tool..... spin lightly in muzzle (kinda like brass)... Chuck done-headed slotted brass screw in drill... apply valve grinding compound to screw head.... Place screw on muzzle and run drill at moderate speed.
I've also used one of the Dremmel cone-shaped grinding bits spun by hand.... that seems to be the best way to do it.
You better pray to the God of Skinny Punks that this wind doesn't pick up......
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