Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Help me work up an M1A load...

Discussion in 'Handloading and Reloading' started by CmdrSlander, Mar 23, 2013.

Thread Status:
Not open for further replies.
  1. CmdrSlander

    CmdrSlander Member

    Joined:
    Jun 28, 2011
    Messages:
    1,203
    Location:
    Disputed Western Missouri
    I don't have a reloading setup but I will have one soon, I don't have an M1A Scout Squad either but I will have one soon...

    Anyway, I want a load for the M1A Scout Squad that will have

    -Low muzzle blast
    -Low recoil (as low as it can be keeping in mind that this is a semi-auto)
    -Good accuracy
    -Reasonably low cost
    -Enough power to cycle the action

    Any suggestions?
     
  2. stubbicatt

    stubbicatt Member

    Joined:
    Aug 23, 2007
    Messages:
    3,413
    Location:
    Colorado
    I dunno man. There is so much data for the match 308 loadings. I think 41.7 grains of IMR 4895 and the Sierra 168 MK in military match brass has been one of the go to loads for years.

    You might start there.
     
  3. oldpapps

    oldpapps Member

    Joined:
    Aug 23, 2011
    Messages:
    735
    Location:
    Middle America, Mo now East of I-435
    The needs of each weapon are never the same.

    I load for an early M1A (brown fiberglass stock with the switch cutout filled). I use the same loading as I worked up (up is not a direction in this case) for use in a Remington Model 600. To make that 600 shoot-able, it is just too light, the loads run 2468 FPS out of that 18.5 inch barrel. Out of the M1A's 22 inch barrel, that load runs 2677 FPS. To my great pleasure, this one load is quite acceptable in both.

    My suggestion is to select a bullet with a powder type that shows greater spreat and work from their. I like 150 grain sp bullets and H or IMR 4895 powders.
     
  4. medalguy

    medalguy Member

    Joined:
    Mar 20, 2009
    Messages:
    3,207
    Location:
    New Mexico
    Every rifle is different, but I have found that 147 gr bullets in front of 42.0 gr of IMR4895 will work very well in an M1A, a full auto M14, FAL, and .30 BMG set up for 7.62 x 51. One load for 4 very different weapons. Wonderful!!
     
  5. cacoltguy

    cacoltguy Member

    Joined:
    Jun 28, 2011
    Messages:
    175
    Location:
    CA
    41.5 grains of IMR 4895 with a 168 gr Sierra Matchking is a decades proven load for the 22 inch barrel M1A. You may try adjusting it slightly to get the best accuracy out of your rifle.
     
  6. 1KPerDay

    1KPerDay Member

    Joined:
    Jan 19, 2006
    Messages:
    12,696
    Location:
    Happy Valley, UT
    Low muzzle blast? LOL

    Lose the "brake" first. ;)
     
  7. bfoosh006

    bfoosh006 Member

    Joined:
    Jan 29, 2008
    Messages:
    472
    IMR 3031. Some guy over at m14forum.com did a through test and IMR 3031 was the winner.
     
  8. KingMedicine

    KingMedicine Member

    Joined:
    Jun 5, 2009
    Messages:
    419
    Location:
    Boise ID
    I use 43.5 grains of reloader 15 with a 158 gr bullet. Seems to work pretty good for me.
     
  9. ArchAngelCD

    ArchAngelCD Member

    Joined:
    Nov 25, 2006
    Messages:
    22,115
    Location:
    Northeast PA, USA
    My favorite .308 powders is IMR4064 and it can be used with the Gas system in the M1A.
    For more inexpensive ammo give WC846 a try, the non-canister version of BL-C(2).

    For a lot of good information on the 308/7.62mm NATO try the site linked to below.
    http://masterpostemple.bravepages.com/762mil.htm

    Good luck and have fun...
     
  10. Float Pilot

    Float Pilot Member

    Joined:
    Jul 27, 2007
    Messages:
    3,149
    Location:
    Kachemak Bay Alaska
    My 16.5 inch barreled M-1A shorty experiments
    This is a cut down military issue barrel.

    Bullet: 135gr Sierra Match King
    45.0gr BENCHMARK
    LC-82 brass, CCI BR-2
    2.804 col roll crimp
    Vel= 2,960 fps average
    Main Group : 0.75 inch ( first and last round from magazine flyers to 1.5in)

    135gr SMK
    45.0gr H-335
    LC-82, CCI BR-2
    2.804 col, roll crimp
    Vel= 2,842 fps average
    Main Group= 3.0 inches

    135gr SMK
    41.7gr IMR-3031
    LC-82, CCI BR-2
    2.804 col, roll crimp
    Vel= 2,691 fps average
    Main Group: 1.20 inch, first and last round from mag flyers out to 2.0 inch
    THIS LOAD ( IMR-3031) FAILED TO CYCLE THE ACTION 30%

    135gr SMK
    44.8gr Benchmark (I have 20 pounds of it)
    LC-82, BR-2
    2.804 col, NO CRIMP
    Group= 1.75 inch Horizontal string

    135gr SMK
    44.5gr Benchmark
    LC-82, BR-2
    2.804 col NO CRIMP
    Group= 2.5 inch Horizontal string

    150gr SMK
    42.0gr Benchmark
    Fed, BR-2
    2.805 col No Crimp
    Group= 2.0 inch circular

    150gr Hornady Soft Point flat base.
    41.5 gr Benchmark
    LC-91 , BR-2
    2.785 col, NO CRIMP
    Group= 0.90 inch average. (smallest group was 0.60 inch)
    THIS IS AS GOOD AS MY EYES CAN DO WITH A SHORT SIGHT RADIUS

    110 grain Hornady Spire soft point
    47.0 grains Benchmark
    Privi Brass , BR-2
    2.690 col , light 1/4 turn roll crimp
    Group = 1.75 inches Actually cycles the action just fines. Going over 3,100 fps

    M-118 Special Ball 172 grain boat-tail issue ammo. 1991 lake City
    Group= 1.75 inches
     
Thread Status:
Not open for further replies.

Share This Page