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Thread: How about the .257 Bob

  1. #21
    Boolit Man
    Join Date
    Jun 2011
    Location
    Surrounded in Central California
    Posts
    84
    Quote Originally Posted by Three44s View Post
    Perhaps it is the length of an all copper 100 gr but it could be that the bore needs to be very clean before switching jacket material?

    Three44s
    Nosler E-tip is 1.218" long, if you count the ballistic tip. That length needs about a 9.5" twist at 3100 fps.
    If you discount the plastic ballistic tip, it is 1.082". Which needs about a 10.7" twist at 3100 fps.
    I may need to try the old .257 Roberts go to powder, IMR 4350. I just need to find some and get it.

  2. #22
    Boolit Buddy
    Join Date
    Mar 2009
    Location
    SE Ks
    Posts
    254
    Get you some 75 gr hp or plastic tipped for varminting and to use up that 4895. Works great in my ruger. I much prefer the H4350 for 100+ though.

  3. #23
    Boolit Master
    Join Date
    Mar 2010
    Location
    NC Arkansas
    Posts
    584
    Is the Bob a shortened 257 Roberts? I don't see a need for shortening it. If the Roberts is too much for you, get a 250 Savage or a 256 Winchester.

    Robert
    Spell check doesn't work in Chrome, so if something is spelled wrong, it's just a typo that I missed.

  4. #24
    Moderator

    Join Date
    Jul 2013
    Location
    The Pacific NorthWet
    Posts
    2,312
    H4831, gumbo333, or H3831?

    *Typos sure happen!*

  5. #25
    Moderator

    Join Date
    Jul 2013
    Location
    The Pacific NorthWet
    Posts
    2,312
    It's just "Bob" as a shorter form of saying Roberts

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check