257 Roberts AI Load Data

Discussion in 'Reloading' started by Henry Haina, Nov 24, 2010.

  1. Henry Haina

    Henry Haina New Member

    Messages:
    3
    Joined:
    Nov 4, 2010
    Anyone have suggestions for 257 Roberts AI load data. I have a new rifle and will need to start from scratch.
     
  2. kk alaska

    kk alaska Member

    Messages:
    13
    Joined:
    Nov 24, 2010
    In 2 257 Roberts Ackleys H 4350, RL19 & AA3100 have worked the best for powders.

    With bullet weights of 100 gr - 120 gr. Accurate Arms had some good book data,
    24 " barrel can run 120 gr bullets @ 2950 FPS with great case life under MOA. One of the better Ack IMP IMHO KK