PMC and R.P brass

Denn0001

Denn0001

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I have a lot of PMC and R.P brass and was wondering if the cheaper brass needed any special consideration when reloading. This brass is all .223 caliber and originally had 55gr. bullets on them. I am loading up to 69gr. bullets using 24.5 grains of H4895 powder. Sorry if this question has been asked before. Thanks. :redface:
 
Every case manufacturer has different internal case capacity for powder so this is how a safe load in one brand is an overload creating high pressure in another brand .Work up a load for one and use up that brand till it's worn out then rework a load for the remaining brand.Segregate your brass..............also watch your OAL of both unloaded brass and loaded to ensure reliable chambering..........Harold....PS the PMC brass may have a military crimp in the primer pocket that will need to be removed before reloading ,tools are cheaply available for this from leading reloading companies
 
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Denn0001 said:
I have a lot of PMC and R.P brass and was wondering if the cheaper brass needed any special consideration when reloading.
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I have some R.P. brass from the green/white UMC boxes, and prepped as normal works fine. The PMC brass of mine had the crimp, so I used a drill bit (3/16?? I think, will fit inside R.P. primer pocket no problem) to just give the pocket a little ream while not enlarging the flash hole, and then a few twists with the lee chamfer tool. They're still more effort to seat a primer, but according to the calipers, it's within .002 of the R.P. primer pockets.

Disclaimer: YMMV, so proceed with caution.
 
Boy am I glad I asked. I have been separating out the standard Remington and Winchester brass and reloading those. Why are there crimps on the PMC and R.P brass?
 
I haven't come across a crimp on the Remington brass of mine, only on the PMC stuff. I was just using the drill bit in a Remington case for a reference purpose. The drill bit that slides in the primer pocket of Remington brass with no problem wil be the one that takes a little bit out of the PMC.

I do forget the reason for the crimp though....:redface:
 
PMC brass is excellent as it is annealed. Yes it has a crimped primer as it was manufactured as Milspec. You will also find that on Federal and some Winchester. The R-P brass is also very nice indeed and very consistent weight wise. Theres lots of lesser quality brass out there so you should be happy with your stash.
dB
 
They were crimped to prevent water getting in.I used a case chamfering tool for bevelling the inside of brass necks and gave it a couple twists and new primers entered no problem.the factory PMC FMJ's were also tarred in the neck.............Harold
 
Lyman makes a nice, simple tool for removing crimps. Takes a few seconds and the crimp is gone. I have used it plenty of times on mil brass. I love mil brass. Sure it may be thicker, but I just use slightly lighter loads.
 
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