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Reloading Service Rifles - Safety Concerns:

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This is a great site detailing the safety concerns when reloading for "Service Rifles" like the Garand, Carbine, M1A, M14, and ARs. A good read and reference:

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Tub Horn said:
If you look in the Hornady reloading manual it has loading data just for a service rifle, because of pressure concerns so be careful if you are going to load for a service rifle.
Hornandy's max loads are way below what actual service rifle shooters are using.

If in doubt go by the book, but those loads are not on the firing line at Perry.
jbpmidas said:
What is the standard Garand load for IMR4895 and 175 SMK's? These would be loaded in commercial cases.
46.5 grains IMR 4895 +or- .5 for any weight from 150 to 175 will do for 200 yard matches.

http://njhighpower.com/cart_tech.htm Scroll to the bottom.
I discovered another serious issue not presented in hardly any of the essays about loading for service rifle.

I use a mild load, all the bullet has to do is punch a hole in paper after all, and I've been using the RCBS X-Die which eliminates the need to trim cases, vastly extending case life.

The problem is, and it wasn't only with X-die sized brass is my primers just weren't seating deep enough. I figured my Lee hand primer had worn out but when I got the Dillon, the same thing occurred so I researched the issue. It turns out the primer pocket thickens! Every firing makes it shallower than it was before! The cure is a primer pocket uniformer sold by Sinclair or Lyman. I picked up one from Bass Pro Shops, it's basically an end mill with a stop collar to machine the pocket to uniform depth. I'd always known they were used by the benchrest crowd to get everything exactly the same, but hadn't realized service rifle loaders need them too. After uniforming, primers are .004" below flush.

I took mine out of the handle and chucked it in a drill and found out my pockets were so thick the tool's teeth would fill with brass and it wouldn't cut deep enough. I pull it out a time or two, clearing the chips out and it seats against the collar like it's supposed to.
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Dusty Rhoads said:
PhilipM--regarding the primer pocket losing depth: is that with Lake City brass?
All cases do this as far as I know. Here's a LC 69 I cut and has an offset flash hole, something I see only on LC cases.

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