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Old 07-07-2009, 06:54 PM
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257Ackley chamber/reamer drawings?


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Hey guys,
I am after a chamber drawing for the 257Ackley and am having trouble finding one with the info I need.
I need to know the throat length on a standard reamer to ascertain how much extra I need to give me an OAL of 3.100" with a Nosler 110gr Accubond.
Any help will be greatly appreciated, if anyone has a link to ANY chamber drawings, that would be great.
Thanks in advance.
MagnumManiac
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Old 07-08-2009, 01:04 PM
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try

http://www.stevespages.com/page8d.htm
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Old 07-08-2009, 03:57 PM
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Quote:
Originally Posted by iiranger View Post
Thanks IIranger!
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Old 07-08-2009, 08:13 PM
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I was not able to find the Ackley version on that link, just the 28 degree RCBS version. If you need the Ackley version with the 40 degree shoulder let me know, I will try to help. I know the Nosler manual #5 has it.
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Old 07-09-2009, 01:13 AM
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Originally Posted by .300WinMag View Post
I was not able to find the Ackley version on that link, just the 28 degree RCBS version. If you need the Ackley version with the 40 degree shoulder let me know, I will try to help. I know the Nosler manual #5 has it.
Thanks 300, I have found the info I'm after, it's .150" standard on most reamers.
Cheers.
MM.
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Old 07-12-2009, 08:43 AM
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Not understood, the chamber reamer is not the same reamer that is used to ream the sizer die, Steve's page list case dimensions, not chamber dimensions, separate reamers can be used to cut the neck and or throat, the throating reamer gives the user options and liberties known only to the user, the user would be better off applying the 'leaver policy' leaver the way he founder.



But the 300 Win Mag (short neck) when throat-ed gets the bullet further out of the case and gives the case an increase in capacity. I suspect nothing, I know the man that made the reamer, chambered the rifles and built the rifles, 5 of them all in 7mm Gibbs, one of the rifles came back, the builder ask me what I would do to determine why, anyhow, I drilled the flash hole/primer pocket to accommodate a cleaning rod, seated the longest 7mm bullet I had, removed the bolt, chambered the test case and pushed the 170 grain bullet out of the case before it hit the rifling (way before it hit the rifling), to fix, set the barrel back and create a gap between the stock and barrel profile, purchase a new barrel for an 06 Springfield and start over, open the bottom of the rifle for cases with a longer OAL, then go with 7mm Weatherby etc., even then the Weatherby reamer would not remove all of chamber. And I suspect nothing, another rifle chambered for the 7.62X39 Russian, same thing push the bullet out of the case, then it hits the rifling, the the barrel is small shank in a Spanish Mauser. I can not talk them into using a 303 DP barrel from a P14 Winchester, I guess it's the accuracy he could not handle.



Giving up the fire formed cases for the 7mm Gibbs was not something my friend wanted to do and I did not want to neck down my 30 Gibbs' cases. Few of a kind, while thinking about what he was going to do, he dropped the reamer, without access to the equipment he will have to borrow or rent one if he decides to correct the bad decision, he ask me how something like that could happen, free bore, I told him someone was reading a book about Weatherby and his chambers and from that someone got a bad ideal.

then there is the ideal a chamber reamer can be used to make a sizer die that would be a perfect fit


F. Guffey
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