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Bore Guide for a 500 Jeffery

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07 April 2010, 18:11
chuck375
Bore Guide for a 500 Jeffery
Anyone know of a source for a bore guide for a CZ 500 in 500 Jeffery? I've tried the usual suspects, no luck so far.

Thanks!

Chuck


Regards,

Chuck



"There's a saying in prize fighting, everyone's got a plan until they get hit"

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07 April 2010, 19:02
GeorgeS
Can't you just use a 1/2" ID PVC pipe cut to length?

George


07 April 2010, 19:07
doubledown
Chuck if you find one let me know. I asked Jason at CZ if they could get me one...no luck. It seems after 416 cal. you are on your own. I tried to get Sinclair to make me one a while back and they said .458 and up the plastic gets too thin and quality suffers.

Even the coated Dewey rods that I have, I still don't like running them down the bore without a bore guide.
07 April 2010, 19:15
fourbore
quote:
Can't you just use a 1/2" ID PVC pipe cut to length?


do you mean 1/2 inch OD?
07 April 2010, 19:32
Jim Manion
Look at the ones they sell for the 50 BMG. .510, right?


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07 April 2010, 19:44
McKay
Lucas Bore Guide is what mine is.....


Mac

07 April 2010, 19:46
GeorgeS
No, the .500 Jeffery bore is .510", but the case is .615" at the shoulder and .620" at the web, so the chamber is slightly larger and the OD of the pipe only has to be slightly smaller.

A quick check of Schedule 40 & 80 pipe dimensions shows that '3/8"' is closest:
Nom.
Pipe
Size O.D. I.D. Min. Wall
3/8" 0.675 0.473 0.091
1/2" 0.840 0.602 0.109

George


07 April 2010, 19:54
RIP
quote:
Originally posted by fourbore:
quote:
Can't you just use a 1/2" ID PVC pipe cut to length?


do you mean 1/2 inch OD?


Seems to me you would want to use the 1/2" ID PVC pipe, as George said. Chamfer the end of it so you can wedge it into the chamber shoulder area, that will be a good guide and same diameter as bore of rifle barrel.

I have done some with the home-cut plastic tubing shoved into an empty cartridge case (cut off head of case) and the neck end of the empty shoved into the chamber as a bore guide.

Stick a cutoff 500 Jeffery case on the end of the 1/2"-ID-PVC, fit it if necessary by chamfer-and-whittle,
epoxy or simply wedge,
and then you will be crapping in the high cotton.
07 April 2010, 22:05
fourbore
Please pardon the brain fart. ID it is.
07 April 2010, 23:56
Macifej
quote:
Originally posted by RIP:
quote:
Originally posted by fourbore:
quote:
Can't you just use a 1/2" ID PVC pipe cut to length?


do you mean 1/2 inch OD?


Seems to me you would want to use the 1/2" ID PVC pipe, as George said. Chamfer the end of it so you can wedge it into the chamber shoulder area, that will be a good guide and same diameter as bore of rifle barrel.

I have done some with the home-cut plastic tubing shoved into an empty cartridge case (cut off head of case) and the neck end of the empty shoved into the chamber as a bore guide.

Stick a cutoff 500 Jeffery case on the end of the 1/2"-ID-PVC, fit it if necessary by chamfer-and-whittle,
epoxy or simply wedge,
and then you will be crapping in the high cotton.


RIP

If you sketch something out I'll take a look at making a short run of them. Can be whatever material - if plastic then delrin or something hard is better.
08 April 2010, 01:44
Von Gruff
The one thing to be aware of when using a cartridge case as part of a bore guide is that you may get a false positive when using some solvents as I did in my 404. kept getting a blue tinge to the patch till I thought it through.

Von Gruff.


Von Gruff.

http://www.vongruffknives.com/

Gen 12: 1-3

Exodus 20:1-17

Acts 4:10-12


08 April 2010, 02:03
Macifej
quote:
Originally posted by Von Gruff:
The one thing to be aware of when using a cartridge case as part of a bore guide is that you may get a false positive when using some solvents as I did in my 404. kept getting a blue tinge to the patch till I thought it through.

Von Gruff.


Delrin or Titanium are non-reactive ...
08 April 2010, 07:15
Robgunbuilder
I usually make mine from teflon rod with a 3/8-5/16 hole through it. Turn it down to chamber dimensions and add a O-ring to keep the solvent in the bore. -Rob


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