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

257 Roberts +P Brass

Discussion in 'Rifle Country' started by wby_shooter, Feb 18, 2006.

  1. wby_shooter

    wby_shooter Member

    How important is it to use +P brass with a hotter load?
  2. hoghunting

    hoghunting Well-Known Member

    I have a sporterized Arisaka in 6.5mm/.257 roberts and the only ammo for it is to reload. The 6.5 mm uses bullets that are .264 so the neck is expanded only .007. My reloads use a heavier bullet than the .257 and the velocity is about 100 fps faster than the .257+P. I am using Remington brass that is marked .257 Roberts, there is not a +P on the cases. Some of the brass has been reloaded 7 times and there is no notable (measured) thinning of the brass around the casehead.

    I would buy Remington brass for the .257 Roberts and load it to +P levels and feel very safe. Hope this helps.
  3. thatguy

    thatguy Well-Known Member

    I have never heard of +P rifle brass. Is there such a thing?

    I would not recommend trying to soup up any rifle cartridge. If the caliber you have isn't fast enough or powerful enough for you buy a another gun in a faster or more powerful caliber.
  4. jerkface11

    jerkface11 Well-Known Member

    .257 roberts has +p loadings but from what i understand the brass isn't any different. In fact i don't think you can find any NON +p loadings anymore.
  5. wby_shooter

    wby_shooter Member

    There are some brass stamped +P for the 257 Rob. The thing is that this cartridge was originally so under power in factory loads that it doesn't get off its knees until it's handloaded.
  6. thatguy

    thatguy Well-Known Member

    I am not familiar with this cartridge but my advice is to always stay within the recommendations of the major reloading manuals. If they list hot loads they have tested and approved then I say go ahead.
  7. CB900F

    CB900F Well-Known Member


    I suggest then that you pick up a copy of Speer #13. Page 190, 257 ROBERTS + P is the header. There is a page of comment on the cartridge which goes into the + P issue.


Share This Page