Sipsey Street Irregulars: Praxis: Reloading for the Match M14 & Case Head Separations.

Tuesday, July 16, 2013

Praxis: Reloading for the Match M14 & Case Head Separations.

Reader Scott forwards this link, "Reloading for the Match M14," with the following comments:

I was researching online about that Lake City primed brass and came across the above article.

Lots of great info about reloading for the M14 and Garand.

It put me more at ease about the case separations I've had lately.

It also tells me I'm going to have to keep brass that runs in either in lots by number of firings.

Pretty much too late for the batches I have so I will do the next best thing and start checking for incipient separation by the wire method as shown here. I've done it in the past and got to where I could catch them by looking so I quit using the wire.

Scott also forwarded this article about Case Head Separations from The Rifleman's Journal.

6 comments:

Mark/GreyLocke said...: .PDF link

http://www.zediker.com/downloads/14_loading.pdf; July 16, 2013 at 2:24 AM
Anonymous said...: For 308 and 7.62x39 cal I use a small AAA flashlight and just look into the case.

I had been using the wire method and on one case I was checking I really couldn't tell if the sidewall was getting thin or not. Looking inside the case it was obvious that case was scrap. Lighting it from the top creates shadows on any abnormalities in the sidewall and really makes them stand out.; July 16, 2013 at 8:56 AM
brass bryan said...: read it through, just be aware that Zediker's comments about Varget in an M14 are dated. Easily available pressure curve data can show that Varget will not exceed the M14's port pressure limit of 12Kpsi. don't take my word for it. research it as if your life depends on it - it does.; July 16, 2013 at 7:45 PM
Paul X said...: I really like that zediker article. I think he said limit your cases to 4 reloads to avoid problems. Seems like good advice. One could also just sacrifice an occasional case (one for each reload of the batch) to a dremel tool to be sure.; July 17, 2013 at 11:13 AM
Paul X said...: Oh, one other thing. Those devices used to slow down extraction/ejection ought to help a lot with case life, I'm guessing.

http://www.midwayusa.com/product/699378/schuster-m1a-adjustable-gas-plug-steel-parkerized; July 17, 2013 at 11:16 AM
Dakota said...: I had some head spacing troubles with my N M M1A years back and sent it in to Springfield. The lifetime guarantee is a wonderful thing although you must talk to them and make sure they understand what you want. They replaced the bolt and it was a junker and I had requested a T R W bolt so I had to send it back again and then it was done right.

I have noticed that ammunition sensitivity is very rampant in mine. I blamed a tight chamber and now realize it is not that. They do skin up brass on the case head a bit. I usually end up losing a fair amount of brass anyway cause I don't shoot at ranges that much. I like to shoot in open country and guesstimate ranges and shoot accordingly. Rifle ranges are just kind of boring for me. This means lost brass, but I will be OK.; July 19, 2013 at 12:03 AM

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Sipsey Street Irregulars

Tuesday, July 16, 2013

Praxis: Reloading for the Match M14 & Case Head Separations.

6 comments:

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