257 Roberts 100 gr E-Tip

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by JD338, Mar 21, 2010.

  1. JD338

    JD338 Well-Known Member

    Messages:
    718
    Joined:
    Jan 29, 2005
    I quick tested the 100 gr E-Tip in my M700 Classic 257 Roberts and can share the following data with everyone.
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    IMR 4350 loaded to a Max charge with 41.5 grs, R-P case and Federal GM210M primers. Avg MV 2779 fps, ES 40, SD 20. Accuracy was 2.05".
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    RL 19 loaded to a Max charge with 46.0 grs gave an Avg MV 3053 fps, ES 38, SD 20. Accuracy was 1.772". The COL was 2.900" and I will have to work with this to improve accuracy.
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    I shot into water jugs at 100 yds, MV was 3042 fps and the bullet was recovered sticking out the back side of jug #5.
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    The recovered bullet weighed 98.7 grs and measured .584" diameter and the length is .635".

    I will update with accuracy improvements.

    JD338
     
  2. 264junkie

    264junkie Well-Known Member

    Messages:
    117
    Joined:
    Jan 7, 2010
    Thanks for the info! Always love seeing data on my 2nd favorite cartridge:D