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darryldw

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Reply with quote  #1 
I'm new to the AR platform. I have a JP interprise AR-10 that I want to hunt with but can't find good reliable info on reloading miltary brass can you guys give me some help with this thanks
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Darryl woods
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sgtsandman

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Reply with quote  #2 
I'm drawing a blank on the proper term for it, so forgive me on using the wrong one.  The only thing I know to be different on military brass is the crimp and sealant on the primer to better keep the element out of the primer pocket.  There is a specific tool to remove this so you can properly reload them.  Outside of the heat treating on the case neck, I don't think there is any other differences.  I don't think 7.62 brass is a heavier build than standard .308 brass.  .308 is actually the hotter round of the two.  The opposite of the .223 Remington and 5.56 NATO cartridges.
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Trevin

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Reply with quote  #3 
I haven't confirmed (the only NATO brass I have is still factory loaded) but I've heard that 7.62x51 brass tends to be a bit thicker and have less capacity than .308 brass. This means that sticking a safe load developed in 308 brass into 7.62x51 brass will probably give you high pressures.

Good practice in rifle cartridges is to segregate by headstamp and do a new workup for each headstamp. Even if it's all 308, different manufacturers will have different capacities.

Don't try to get away with just neck sizing for a semi-auto. You'll need to bump the shoulder back .003" to .005" to get reliable feeding. Work up all your loads, pay attention to the brass. I know AR-15s will start to show swipes, imprints of the bolt face features and primer flattening/cratering when you get to hot - I'm assuming AR-10s will do the same. Swipes can also be caused by timing issues but if you have swipes along with another pressure sign, stop. If you've reloaded other stuff, you should be fine.
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darryldw

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Reply with quote  #4 
I have small base dies that I will use because of the tight spec of jp rifles and All my brass is once fired military brass, which I will prep all at once one step at a time. Then I will start to work the load up. IcLick my number is 719-510-4041 please contact me and let me pick your brain a little. Its good to see that People look out for one another these days. I can't thank you enough all who sends in reply to my situation for shoot I thank you all again.


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Darryl woods
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