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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Elvis Super Member
Joined: Jul 27, 2008 Posts: 9256 Location: south island New Zealand
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Posted: Wed Jan 06, 2010 11:55 pm Post subject: Re: Broken Case Extraction |
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smart thinking
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gelandangan Super Member
Joined: May 07, 2006 Posts: 6398 Location: Sydney Australia
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Posted: Thu Jan 07, 2010 12:10 am Post subject: Re: Broken Case Extraction |
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Any which way as long as it works!!
Looking at your rolling block, your gunsmith should be able to unscrew the barrel, straighten your breech end and re-set the headspace.
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5002 Location: NC foothills
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Posted: Thu Jan 07, 2010 12:26 am Post subject: Re: Broken Case Extraction |
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Very clever! Good work!
_________________ Mike
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Thu Jan 07, 2010 4:53 am Post subject: Re: Broken Case Extraction |
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gelandangan wrote: |
your gunsmith should be able to unscrew the barrel, straighten your breech end and re-set the headspace. |
This RB is pretty worn. It already has a repair on it where there is a weld line on the bottom back end of the breech block to tighten up the tolerance with the rolling face of the trigger as it strikes. I closely looked at the stack-up last night and you can see the breech pin move slightly in the receiver when you load the action up. I think any gunsmith work to be viable, it needs to address the tolerance in the pins. I am checking with a couple of gunsmiths on my options. I may just JB weld a .010 shim to the face of the breech block and go from there. I mocked it up last night and it looked like a feasible way to go to make the gun safer. I also am changing my brass to Starline which has a thicker case wall.
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PaulS Super Member
Joined: Feb 18, 2006 Posts: 4330 Location: South-Eastern Washington - the State
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Posted: Thu Jan 07, 2010 11:12 pm Post subject: Re: Broken Case Extraction |
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I would either weld the holes up and re machine or machine to slightly larger holes and use a larger pin.
Putting a shim on the face of the rolling block is not really valid. If the shim is epoxied in place the recoil from firing will crush it or dislodge it from the face - silver solder won't hold up much better. If you take the play out of the pins you cure the problem and the gun stays more or less original.
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Fri Jan 08, 2010 8:15 am Post subject: Re: Broken Case Extraction |
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I was thinking about the need to take the play out of the pins myself this morning and how best to do it. My big concern is how to do it affordably as all the gunsmithing required could cost more than just buying a new Pedersoli.
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Sat Jan 09, 2010 9:29 am Post subject: Re: Broken Case Extraction |
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Are there wear marks on the pins themselves, where the Hammer, block rotate on them? if so you may be able to take the slack out with a new set of pins this seems to be rather simple way of gaining a little. also if the pins are wobbling they could be bent a wee bit. again a new set of pins may be the cure.
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Sat Jan 09, 2010 3:11 pm Post subject: Re: Broken Case Extraction |
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fnuser wrote: |
a new set of pins may be the cure. |
Thanks for the suggestions. I usually find that when I get in these type of situations (where I'm unsure exactly what all the variables are) that its best to go slow. Every time I take a closer look at the rifle, I realize a bit more of what the issues are. I need to look at the pins and the rolling breech and trigger more closely. I think I've figured out a way that I can exactly measure the play in them.
I may check around a couple of vintage gun smiths and see if they have any standardized over-size pins. I also had someone suggest the best way to fabricate new pins is by turning down drill bits.
I love to have projects like this. I'll report back on the pins next weekend. I have to go out of town this coming week.
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Sat Jan 09, 2010 8:54 pm Post subject: Re: Broken Case Extraction |
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fnuser wrote: |
Are there wear marks on the pins? |
Well I couldn't wait so I set the rifle up on the table so I could watch the football game at the same time. I got out my micrometers and started measuring. The pins are the culprits! Yes, they have wear marks but not where I expected (no pun intended). The pins are worn more where they contact the receiver block - the ends are thinner than in the middle. I was also surprised to see the trigger pin rotate with the hammer, even though I have Action-Magic (dry moly lube) on the pins and inside the breech and trigger blocks. These are the stack-up.
.008 to .010 pins to breech/trigger blocks
.010 on the breech pin to receiver
.005 on the trigger pin to receiver
I may have to find a better instrument to measure the recieve holes with but they still appear to be round. Looks like if I get some new pins made I may get the tolerances within acceptable limits.
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Mon Jan 11, 2010 10:46 am Post subject: Re: Broken Case Extraction |
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I don't think you'll have to get them made call gun parts and see if they have any on-hand, Or maybe Dixie gun works would have a new-made set ready to go. Do you have a grizzly catalog they sell tapered pins you could buy one the right size and slip it in since the new pin is round if it had any play in any direction when its foward travel stopped that would tell you if your holes were round.
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Mon Jan 11, 2010 10:50 am Post subject: Re: Broken Case Extraction |
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it seems like the breech pin would be the culprit not the hammer pin although if the locking lug on the hammer were worn a replaced hammer might also tighten stuff up.
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Gil Martin Super Member
Joined: Jan 28, 2005 Posts: 1837 Location: Schnecksville, PA
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Posted: Mon Jan 11, 2010 7:09 pm Post subject: Re: Broken Case Extraction |
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All good information. Thanks for sharing. All the best...
Gil
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Mon Jan 11, 2010 10:04 pm Post subject: Re: Broken Case Extraction |
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Numrich had some pins in stock but I'll have to call them to see what size they are. Still checking with some gunsmiths.
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