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. . . fix for addressing occasional keyholing
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Picture of Nakihunter
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I am no expert ....

The idea of cork with space above powder needs to be clarified. The cork wad is actually touching the base of the bullet and therefore there is no issue.

If there was space between the wad and the powder one side and space also between cork and bullet on the other side, then you would have a serious problem, similar to bore obstruction.

Please feel free to comment on this.

BTW - George - The primer goes off first and then the powder. The pressure build up is AFTER that. When you break down each mini event into individual events, you will yourself learn that there is no correlation between a hang fire and key holing.

If you got both happening at the same time IN YOUR 7MM Mag, that is called "coincidence" and not a "correlation". Epistemology 101 ! Wink


"When the wind stops....start rowing. When the wind starts, get the sail up quick."
 
Posts: 11420 | Location: New Zealand | Registered: 02 July 2008Reply With Quote
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Picture of MJines
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From Shooting the British Double Rifle (page 133):

"The same cartridge and load [.38-55 cases loaded with 10 grains of Bullseye] was used with various wad material and also with no wadding at all. They also experimented with wads positioned off the powder by varying amounts and felt wads as bullet base protectors. The results can summarized as follows:

1. Wads positioned on the powder all gave some ringing effect . . .

4. A cork wad positioned 0.2" off the powder produced no ringing."


Mike
 
Posts: 21961 | Registered: 03 January 2006Reply With Quote
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quote:
Originally posted by Nakihunter:
I am no expert ....

The idea of cork with space above powder needs to be clarified. The cork wad is actually touching the base of the bullet and therefore there is no issue.

If there was space between the wad and the powder one side and space also between cork and bullet on the other side, then you would have a serious problem, similar to bore obstruction.

Please feel free to comment on this.

BTW - George - The primer goes off first and then the powder. The pressure build up is AFTER that. When you break down each mini event into individual events, you will yourself learn that there is no correlation between a hang fire and key holing.

If you got both happening at the same time IN YOUR 7MM Mag, that is called "coincidence" and not a "correlation". Epistemology 101 ! Wink

I am an expert!
No one said the primer did not go off.
 
Posts: 11651 | Location: Montreal | Registered: 07 November 2002Reply With Quote
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I couldn't figure out what you fellows were talking about until I remembered that Shootaway is on my ignore list. Put him on yours and he goes away.


Quick, Cheap, or Good: Pick Two
 
Posts: 2184 | Location: Tennessee | Registered: 18 February 2007Reply With Quote
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quote:
Originally posted by Vol717:
I couldn't figure out what you fellows were talking about until I remembered that Shootaway is on my ignore list. Put him on yours and he goes away.


I have never seen any reason to put anyone on ignore. I simply skip over one I don't choose to read. My reasoning is in your post above, ie it makes some debates difficult to understand when you only get half of the debate.

.................................................................... Confused


....Mac >>>===(x)===> MacD37, ...and DUGABOY1
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Posts: 14634 | Location: TEXAS | Registered: 08 June 2000Reply With Quote
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Mike would you not consider the possibility of sleeving or replacing the barrel to correct it once and for all? Or does this restoration alter the intrinsic value of the rifle?


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Posts: 10036 | Location: Zambia | Registered: 10 April 2009Reply With Quote
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Of course since the barrels are the original barrels you would prefer to address the issue in the least intrusive way possible. The cork wads seem to work fine. If that did not work, then I think you would swag/draw bullets to a slightly larger diameter. Rebarreling is not only very expensive, perhaps even more costly than the rifle would be worth, but at that point you have destroyed the originality of the rifle. Wads may work for the rest of the rifle's life.


Mike
 
Posts: 21961 | Registered: 03 January 2006Reply With Quote
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If the rifle needs a new barrel, it needs a new barrel.
 
Posts: 11651 | Location: Montreal | Registered: 07 November 2002Reply With Quote
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quote:
Originally posted by MJines:
Of course since the barrels are the original barrels you would prefer to address the issue in the least intrusive way possible. The cork wads seem to work fine. If that did not work, then I think you would swag/draw bullets to a slightly larger diameter. Rebarreling is not only very expensive, perhaps even more costly than the rifle would be worth, but at that point you have destroyed the originality of the rifle. Wads may work for the rest of the rifle's life.


Thanks and glad to hear that you succeeded with what turned out to be a simple and affordable solution.


ROYAL KAFUE LTD
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Posts: 10036 | Location: Zambia | Registered: 10 April 2009Reply With Quote
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quote:
Originally posted by shootaway:
If the rifle needs a new barrel, it needs a new barrel.


. . . correct . . . and this one obviously does not.


Mike
 
Posts: 21961 | Registered: 03 January 2006Reply With Quote
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quote:
Originally posted by MJines:
. . . that's a job for Saint Jude.

animal
And unlike my good friend Mac, "ignore" works just fine in this case!


Rusty
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"for I have sworn upon the altar of god eternal hostility against every form of tyranny over the mind of man." Thomas Jefferson
Declaration of Arbroath April 6, 1320-“. . .It is not for glory, nor riches, nor honours that we are fighting, but for freedom - for that alone, which no honest man gives up but with life itself.”
 
Posts: 9797 | Location: Missouri City, Texas | Registered: 21 June 2000Reply With Quote
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quote:
Originally posted by MJines:
Not sure how or why but it does make a difference . . .



Mike, just a fashion reminder. No floral print paper plates after September 1st! Big Grin


Rusty
We Band of Brothers!
DRSS, NRA & SCI Life Member

"I am rejoiced at my fate. Do not be uneasy about me, for I am with my friends."
----- David Crockett in his last letter (to his children), January 9th, 1836
"I will never forsake Texas and her cause. I am her son." ----- Jose Antonio Navarro, from Mexican Prison in 1841
"for I have sworn upon the altar of god eternal hostility against every form of tyranny over the mind of man." Thomas Jefferson
Declaration of Arbroath April 6, 1320-“. . .It is not for glory, nor riches, nor honours that we are fighting, but for freedom - for that alone, which no honest man gives up but with life itself.”
 
Posts: 9797 | Location: Missouri City, Texas | Registered: 21 June 2000Reply With Quote
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Rusty,

Always good to know your patron saints. Wink

I know, I need to talk to the Boss. If I am going to steal her paper plates for targets she needs to start buying more range-appropriate paper plates. Big Grin


Mike
 
Posts: 21961 | Registered: 03 January 2006Reply With Quote
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quote:
Originally posted by MacD37:
quote:
Originally posted by Vol717:
I couldn't figure out what you fellows were talking about until I remembered that Shootaway is on my ignore list. Put him on yours and he goes away.


I have never seen any reason to put anyone on ignore. I simply skip over one I don't choose to read. My reasoning is in your post above, ie it makes some debates difficult to understand when you only get half of the debate.

.................................................................... Confused


Hey Mac, you should give it a try. Only seeing half of the argument with Shootacow on ignore is actually a better argument - and more entertaining!


Antlers
Double Rifle Shooters Society
Heym 450/400 3"
 
Posts: 1990 | Location: AL | Registered: 13 February 2002Reply With Quote
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I am curious how one determines the gap size between a cork and powder and how can you insure its stability in a hunting situation or even at the bench???? Ive never had the problem so all this is something new to me and Im interested.

Ive only used foam plugs from Europe, WR as I recall or ones I bought at SCI.


Ray Atkinson
Atkinson Hunting Adventures
10 Ward Lane,
Filer, Idaho, 83328
208-731-4120

rayatkinsonhunting@gmail.com
 
Posts: 42309 | Location: Twin Falls, Idaho | Registered: 04 June 2000Reply With Quote
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