Homemade OAL gauge

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statelineRUT

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Dec 7, 2002
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Michie, TN
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.
[image]http://i28.photobucket.com/albums/c249/statelinerut/100_5009.jpg[/image]
[image]http://i28.photobucket.com/albums/c249/statelinerut/100_5010.jpg[/image]
 
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!
 
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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