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Old 04-24-2019, 06:32 AM
kb1903 kb1903 is offline
Join Date: Jul 2012
Location: s/e pa.
Posts: 161
Default M1A loads

I have 100 308 rounds that I loaded for my bolt rifle that I no longer have. They are loaded on once fired federal cases, 39.5 grains of H4895 over a Sierra 180 grain match bullet. Are these too hot/heavy for my "loaded" M1A? I'd rather be safe than sorry. Thanks, Ken
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Old 04-24-2019, 06:47 AM
nf1e nf1e is online now
Join Date: Apr 2012
Location: Connecticut
Posts: 2,667

You should be well within published safety margins. Remember that most of those keep max on the low side anyway and my charts show max at 41.5.
Whatta hobby.
Semper Fi
Sgt USMC 66 -72
RVN 67-68
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Old 04-24-2019, 06:49 AM
kb1903 kb1903 is offline
Join Date: Jul 2012
Location: s/e pa.
Posts: 161
Default m1a Loads

Thanks Art, from following your postings, if anyone would know, it would be you!
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Old 04-24-2019, 07:20 AM
navyrifleman navyrifleman is offline
Join Date: Oct 2009
Posts: 1,099

When reloading for a semi-auto like the M-14/M1A or the AR type rifles, you have more factors to consider than with a bolt action rifle.

Besides the upper end pressure and Max loading, you have to consider the lower end of the spectrum as well, because the round needs to cycle the action. Bullet weight must also be considered, especially to determine if your barrel's rate of turn will stabilize the bullet you wish to load.

Lyman published a book titled "Loading for the AR" which has load data for the many different cartridges that the AR system is chambered for. The .308 Winchester cartridge is included and those loads will cycle the action, keep you under max pressure, and offer good selection of bullets.

.308 Win Loads suggested in that book, while written with the AR system in mind, will also work well in the M-14 or M1A. Compare them with your other reloading manuals and you will see some differences.
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Old 04-27-2019, 11:05 AM
iprfr69 iprfr69 is offline
Join Date: Dec 2018
Location: Washington State
Posts: 25

One area I have not seen mentioned is sizing. if you neck sized those rounds for your bolt rifle you MIGHT have an issue with the rounds not chambering correctly. On all of my Semi Auto rifles including my M1A I use small base dies. I have never had any problems with chambering.
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