IMR-4064 is the most constant powder through the years.
Bart B is right, Hi bart , I still use it in my 308 M1 Grand Rifle and M14.
I had a crowning tool for my M-14 and M1s that I would use after my groups would start to open up.
You can get it at brownells it may work for you.
http://www.brownells.com/gunsmith-to...r-prod628.aspx
Here is the pilot
http://www.brownells.com/gunsmith-to...prod41628.aspx
If you do use it send me a PM and I will give a couple of tips on using it.
Edward5759
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This year will go down in history. For the first time, a civilized nation has full gun registration. Our streets will be safer, our police more efficient, and the world will follow our lead into the future!" -Adolf Hitler,1935"
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