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#664580 - 03/16/08 10:46 PM Homemade OAL gauge
statelineRUT
10 Point


Registered: 12/07/02
Posts: 3254
Loc: Michie, TN

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I made a dummy OAL gauge for my 243 Stevens today. I took a full length sized brass, without primer, and cut a slit in the neck with a small hack saw blade. I then seated a bullet partially and chambered it slowly. I did this three times and took the average measurement. This gave me the maximum OAL of my rifle. I will now use this cartridge to set the seating die whenever I am loading 75gr Vmax bullets. I will set the die and run the dummy round into the seating die to where it seats to the maximum OAL length I got and then adjust the seating die to where I want it from there. I will probably back it off the .015 and begin there. It was really easy to do and I think it will work well. The maximum OAL of my rifle is 2.660 and the SAAMI COL for the 75gr Vmax is 2.640.

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#664800 - 03/17/08 08:42 AM Re: Homemade OAL gauge [Re: ]
firefox
6 Point


Registered: 09/06/07
Posts: 762
Loc: USA

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That is something to think about.
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#664804 - 03/17/08 08:47 AM Re: Homemade OAL gauge [Re: ]
firefox
6 Point


Registered: 09/06/07
Posts: 762
Loc: USA

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That is something to think about. I just wonder what will happen with full-length sized cases that weren't bumped back as far as the hacked case? Have you considered trying it with a neck-sized case and remove the burrs on the inside of the neck? I feel your results will differ with a case fired in that rifle and neck sized only. I see a lot of burrs on the inside of the neck of the hacked case and I feel the burrs may be causing drag on the bullet during bolt closure on the hacked case. Sorry but I had a minute to think about it!
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#665308 - 03/17/08 06:26 PM Re: Homemade OAL gauge [Re: firefox]
TiminTN
12 Point


Registered: 06/18/00
Posts: 6329
Loc: Memphis,Tennessee U.S.A.

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Thats not a bad way to go if you are seeing pretty repeatable numbers. If things are consistent then its a really good way to go!!
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#669742 - 03/20/08 12:23 AM Re: Homemade OAL gauge [Re: TiminTN]
deerjackie
6 Point


Registered: 01/23/08
Posts: 847
Loc: henry co tn

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drill flashhole out and put old 22 cleaning rod in flashhole and use o rings to show how far oal is then deduct 5/1000 . your idea and mine may be the ticket.
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