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Old January 30, 2013, 10:17 PM   #1
erhodes
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Using LC 7.62x51 brass for reloading 308

I am just getting into reloading for my new remington 700 with a 26" bull barrel and have heard that the loads are different if you are not using 308 brass. I just purchased 500 LC 7.62 brass and was wondering how much lighter I need to make the loads compared to normal 308 brass reloading.

I am wanting to test a few different powders to see what my rifle likes best so I have some H-335, Winchest 748, and IMR 4895. I am looking to use 178 grain hornady a-max and match bullets. I am going to start with light loads but I didn't know how high I could go. Thanks for your help in advance.
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Old January 30, 2013, 10:34 PM   #2
Jimro
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Use normal load data, do not exceed max. The case volume differences don't mean much to starting loads with the powders you listed and probably won't manifest any problems once you reach max, but do the normal load workup.

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Old January 30, 2013, 10:35 PM   #3
Hummer70
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It is hard to beat 40 gr. 4895. No pressure problems, long case life with 168 match bullets.
For 180 gr. I dropped to 39 gr.
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Old February 1, 2013, 03:25 PM   #4
Bart B.
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Lake City's best accuracy ammo for the 7.62 NATO round has used about 42 grains of IMR4895 under 168, 172 and 175 grain bullets. Exact charge weight's determined as to what produces best accuracy, average pressure and average muzzle velocity within their specs. Actual charge weights I've measured varied +/- almost half a grain around 42 of 'em.

A 1/10th grain charge weight change for each 10 grains of case weight's been a good standard; heavier cases, less powder.
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Old February 1, 2013, 04:58 PM   #5
wogpotter
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Back off about 1~1 1/2 grains & work back up from whatever your commercial case loads are for the same projectile, powder & primer.

My data shows a slight variation year to year in LC brass but I've had loads up to 45.5 Gr of WW748 BR with Sierra 165 gr gamekings.
NOTE: THIS IS A MAX LOAD, START LOW & WORK UP CAREFULLLY CHECKING FOR PRESSURE SIGNS.
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Old February 2, 2013, 08:24 AM   #6
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Quote:
It is hard to beat 40 gr. 4895. No pressure problems, long case life with 168 match bullets.
Great for semi-auto rifles
Quote:
Lake City's best accuracy ammo for the 7.62 NATO round has used about 42 grains of IMR4895 under 168, 172 and 175 grain bullets.
Great for bolt guns, and a little warm for semi-autos
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