few questions 338-378wby

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by busse fan, May 1, 2013.

  1. busse fan

    busse fan Well-Known Member

    Messages:
    49
    Joined:
    May 16, 2011
    I have an accumark coming in 338-378wby. I also got a great deal on 80 pieces of 30-378 as well as 80 pieces of 338-378.

    Is it possible to neck up the 30-378 and use it interchangeably with the 338-378 brass? As in can I load up 50 with the same powder, primers, bullets and expect the same acuracy from the loads with the necked up 30-378 and 338-378?

    I am also looking for a hunting bullet to use out to 1000. Any recomendations? Deer, black bear, elk and moose.
     
  2. Kevin Thomas

    Kevin Thomas Well-Known Member

    Messages:
    1,256
    Joined:
    Feb 16, 2009
    Busse fan,

    Yes . . . and no. Yes, you can neck up the 30-378 brass to .338, but no, you probably won't want to use it "interchangeably" with the other factory 338-378 brass. It may work just fine, probably will in fact. But it's still a different lot (at the least) and is likely to have somewhat different neck wall thicknesses, different neck tensions, capacities, etc.. I've necked up 30-378 cases to use in the 338-378, but I never mixed brass. Keep them separate, treat them as individual lots, and you'll get better results all the way around.
     

  3. busse fan

    busse fan Well-Known Member

    Messages:
    49
    Joined:
    May 16, 2011
    Thanks for the reply. Will keep them separate. Any advice on a hunting bullet? Thinking 250gr actions right now.
     
  4. Kevin Thomas

    Kevin Thomas Well-Known Member

    Messages:
    1,256
    Joined:
    Feb 16, 2009
    I used it strictly as a target cartridge, never for hunting. Probably several options available there, but I can't comment on these from any experience.
     
  5. highridge1

    highridge1 Well-Known Member

    Messages:
    906
    Joined:
    Jan 24, 2008
    I really like the 300 gr SMK in the 338-378 it really hammers game. 250 gr accubonds are great too just not as good way out there.
     
  6. busse fan

    busse fan Well-Known Member

    Messages:
    49
    Joined:
    May 16, 2011
    Is there a better choice out to 1000for hunting than the 250 accubonds? Not so much interested in super expensive CE bullets etc. I don't think I need a 300gr under 1k. Was thinking about the 250 berger hybrid but read reports about them having closed tips and terminal performance problems As a result.

    Thanks
     
  7. dig

    dig Well-Known Member

    Messages:
    662
    Joined:
    Sep 19, 2010
    I am having great luck with the Hornady 285 Match. Great BC and rifle shoots them.
     
  8. robert6715

    robert6715 Well-Known Member

    Messages:
    110
    Joined:
    Feb 7, 2012
    My Accumark loves the 300 Berger and 300 SMK. If you want to stick with the 250's I like the Sierra Game King. Mine shoots the 250 SGK good but not as good as the 300's. They all deliver unprecidented stopping power. I killed 2 deer with the 250 SGK with no complaints.

    Hope this helps Rob
     
  9. busse fan

    busse fan Well-Known Member

    Messages:
    49
    Joined:
    May 16, 2011
    Going to try the 185ttsx as a short range Zapper, kinda like my 257 with 100ttsx. Going to try the 225 accubond as well as the 250 Berger. See how it goes.
     
  10. angus-5024

    angus-5024 Well-Known Member

    Messages:
    1,132
    Joined:
    Jan 22, 2008
    -225 accubond
    -225 barnes TTSX
    The 225's are so fast
    -250 Sierra Game King
    -250 Accubond
    -250 berger OTM or Elite hunter (little thicker jacket on the OTM)
    -250 barnes X
    -285 barnes TTSX
    -300 SMK
    -300 Berger OTM/Elite hunter

    I have used all of these bullets except the 285 barnes and the 250 Accubond. They are all great bullets.
    **these were out of a RUM, Not a Wby*8 but they are still good for the .338-.378
     
  11. idaho elk hunter

    idaho elk hunter Well-Known Member

    Messages:
    542
    Joined:
    May 7, 2013
    I have shot almost every bullet option out of my 338 Weatherby. I have found that with my freebore the harder the bullet the better the group. The 265 lrh moly coated from Barnes with a Winchester MAGNUM primer over a stout worked up load of 112.2 gr RL 25 will give over 3200 fps and quarter sized groups at 100 yds. The 300 gr accubong on top of 112 gr H 570 vitavouri pushed to 3000 did fine. Lots of room to go faster fps with more powder but the load was compressed so much the Hornady dies distorted the ogive of the bullet. Barrel is Blackstared. So work your loads up with caution!
     
  12. busse fan

    busse fan Well-Known Member

    Messages:
    49
    Joined:
    May 16, 2011
    Thanks for the posts. I've found ttsx blow the petals when pushed hard and hitting bones. I would be concerned with this and the 185ttsx I may try the 185gmx as they don't seem to have this problem.

    If I can get a mono 185 to shooting at 3500 or so it would be great to 600 and I could use a 300 Berger after that.

    Will see how it goes.
     
  13. X-man

    X-man Well-Known Member

    Messages:
    268
    Joined:
    May 4, 2007
    There is no way you have to worry about blowing pedals.
    338 bullets are a lot tougher and heavier of construction than even the 30 cal bullets.
    I shoot Alaska/Yukon Swamp donkeys with the 225 and 265..no problem...good luck retrieving one. If you drop a pedal its no biggy.

    The little bullets are worthless in the 338/378. I would start with the 265.
    If you want speed go 225 Accubond..Its a great killer and at 338/378 speeds you wont have to cook the animal much to eat it ! :)
     
  14. busse fan

    busse fan Well-Known Member

    Messages:
    49
    Joined:
    May 16, 2011
    I've blown all the petals off the .375 ttsx with just the shank left.