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Old 03-18-2018, 07:34 AM
Booga Booga is offline
 
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Post 150 gr load data for M1A/M14

Does anyone have actual load data for the M1A using the below components? I know what the books say, but would like to hear what others have done in actual practice.

150 gr FMJBT bullet
LC cases
CCI#34 primers
IMR4064 powder

I've been trying to work this load up, but as I get closer and closer to what I consider to be the maximum charge, the increase in velocity becomes less and less such that I can't seem to get the published velocity (2700 as per the Hornady manual). I'm getting close but seem to be stuck at around 2650.

Also, from internet searches I've seen people post maximum loads for the above components listed anywhere from 42.0 gr to 44.0 gr of IMR4064. 42 seems ok, 44 seems excessive - what about 43.0?

Last edited by Booga; 03-18-2018 at 07:39 AM.
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Old 03-18-2018, 07:38 AM
rcolarco rcolarco is offline
 
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Don't worry about velocity. Load for accuracy. Max velocity does you no good by itself.

For 150s, I load 40.0 of 4064. This gives me the best accuracy, and is easy on the rifle.
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Old 03-18-2018, 11:11 AM
DougS DougS is offline
 
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I have used 42.0 of 4064 with the 150 grain bullet, but my preferred load is 40.0 grains 3031. For the 168 grain HPBT then I drop to 39.0 grains 3031. I do use 4064 though with the 175 grain HPBT. I don't have a chronograph, so can't tell you the velocities.
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Old 03-18-2018, 12:18 PM
Booga Booga is offline
 
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Quote:
Originally Posted by rcolarco View Post
Don't worry about velocity. Load for accuracy. Max velocity does you no good by itself.

For 150s, I load 40.0 of 4064. This gives me the best accuracy, and is easy on the rifle.
Thanks for the reply. You answered my next question which was going to be what are the best accuracy loads for 150's
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Old 03-18-2018, 03:22 PM
rcolarco rcolarco is offline
 
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Quote:
Originally Posted by Booga View Post
Thanks for the reply. You answered my next question which was going to be what are the best accuracy loads for 150's
If you are really interested in accuracy, the 150 FMJ is not a very good choice. It is better than the 147 M80 bullet, but that is not saying much. A better choice for ranges out to 600 yards is the 168 Match King (or Nosler or Hornady equivalents). Better yet is the 175 Match King, which is used in current US military sniper 7.62x51 ammo (M118LR).

I once loaded the 150 FMJBT and the 173 military bullet because someone gave me a bunch of them. However, once I tried the 168, I never looked back.

However (again), your barrel may produce all the accuracy you will ever see with the 150s. Still, I would try at least a box of 168s.
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  #6  
Old 03-18-2018, 10:26 PM
tcostakis tcostakis is offline
 
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With those exact components Iíve been loading 42gr with acceptable accuracy. Yesterday, I hit the range for some testing with six loads: 40.0, 40.5, 41.0, 41.5, 42.0, 42.5gr. I havenít figured out a way to attach my MagnetoSpeed to the M1A yet plus Iím more interested in accuracy than velocity with this rifle so I didnít concern myself with anything other than group sizes. I donít have pics but both 41.0 and 42.5 gave me 1Ē or smaller 5 shot groups. For the sake of economy Iím going to load 41.0 for awhile and see how it does over the course of a couple hundred rounds.
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