My mystery cartridge

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  • Snav

    Active Member
    Feb 27, 2013
    349
    Montgomery Co.
    In the load data sharps sent me it mentions that AA2230 is identical to x-terminator.

    Here is some reloading information to accompany your new dies from Sharps Rifle Co.:

    (If necking up once-fired military 5.56 brass, reduce charges by 10 percent and work up)
    THESE ARE MAXIMUM LOADS! APPROACH WITH CAUTION!
    Load #1 - CCI 400 small rifle primer and Sierra 70 grain Blitzking .257 bullet, Powder H335 - Maximum load 27.5 grains - expected velocity of 3100 fps (needs a powder drop tube)
    Load #2 - CCI small rifle primer and Sierra 70 grain Blitzking .257 bullet, Powder A2200 - Maximum load 27 grains - expected velocity 3100 fps
    Load #3 - CCI 400 small rifle primer and Sierra 75 grain Hollow Pnt .257 bullet, Ramshot X-terminator - Maximum load 27.5.0 grains - expected velocity of 3100 fps (needs a powder drop tube)
    Load #4 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder H322 - Maximum load 26.0 grains - expected velocity of 2850 fps
    Load #5 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder H335 - Maximum load 28.0 grains - expected velocity of 2900 fps
    Load #6 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder Ramshot X-terminator - Maximum load 27.5 grains - expected velocity of 2950 fps
    Load #7 - CCI 400 small rifle primer and Speer HotCor 87 grain .257 bullet, Powder A2200 - Maximum load 25 grains - expected velocity 2900 fps
    The Ramshot X-Terminator powder comes the closest of all of the commercial powders we've tested to the velocities achieved with our factory loadings in which we use factory OEM powders.
    Ramshot X-Terminator and Accurate 2230 are the same powder.

    With a 20" barrel, 2970 fps velocity with 1704 ft. lbs. of energy.
    18" barrel, 2890 fps, 1613 ft. lbs.
    16" barrel, 2790 fps, 1504 ft. lbs.

    The OAL cartridge length is 2.245”. The case length should be 1.760”. Trim to length 1.750”.

    Sincerely, Randy, SRC Customer Service Dept.
     

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