Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets


help sizing .30-378wby brass

LinkBack Thread Tools Display Modes
Unread 09-08-2007, 07:20 PM
Platinum Member
Join Date: Jun 2004
Location: Texas
Posts: 1,074
I load .30 x .378 and .338 x .378. Full length resize both. The sizer die is set by screwing it down until it stops on a fired case that has the neck cut off in the middle of the neck radius (depending on where you cut the neck, you may want to pull the expander plug). Turn the die in handy on the case, and lock it down. This only works if you shoot the brass in the same rifle. The shoulder won't wrinkle or cave in this way. The .30 by shoulder is a little more fragile than the .338, but both require thin sizing lube inside and outside and thorough cleanup. You may booger up a few cases before you get it like you want it.

Ditto on the primer pockets; mine get loose at 4-5 firings. If I knew how to tighten them up again, the rest of the hull would probably make 4 or 5 more firings.

My go-to hunting rifle is my .30 by, Henry Wayne, (you might be a redneck if you name your rifles). #2 is my 7mm-08 named Ugly Baby. Henry Wayne is sub 1/2 moa, and Ugly Baby is sub 1/4 moa. Both are way better than I am.

Got long winded again, good hunting, Tom
Texas State Rifle Association Life Member
NRA Endowment Life Member

A big fast bullet will beat a little fast bullet every time
Reply With Quote
  •   #9  
    Unread 09-09-2007, 10:32 AM
    Platinum Member
    Join Date: Jul 2004
    Location: Texas
    Posts: 7,001

    Sounds like a lot of good advice.

    The trick to Weatherby or any belted magnum case is that the
    head space needs to be .001 or less and the chamber needs
    to be concentric. Then size as close to full length as possible
    with out touching the sholder of the case.

    By doing this everthing is aligned prefect an the problems with
    freebore are eliminated .

    If the head space is more than .001 or .002 thousandths thenI would
    recomend neck sizing only."BUT" before you go hunting try each round
    to make sure they will go ( A common practice with dangerous game
    rifles even with full length sizing to avoid a problem at the worst time).

    So start by checking the head space on your rifle and go from there.

    All you need to check head space is a small peice of brass shim stock
    .002 and some grease to make it stick to the bolt face . Cut several
    pieces small enough to fit in the bolt face without touching the extractor

    Being very careful use a new factory round and close the bolt on it
    with one of the brass shims stuck to the bolt face if you feel a slight
    resistance then take the shim out and try it with out the shim. If it
    feels the same add two of the shims( You should'nt be able to close
    the bolt with out forcing it"DON'T" .

    Of course if you have access to a head space gauge please use it first
    to avoid using a live round.

    One of my Weatherby's shoots a .091 5 shot group set up this way.

    Good luck
    "PRESS ON"
    Reply With Quote

    Unread 09-09-2007, 10:32 PM
    Gold Member
    Join Date: Jan 2006
    Location: Nebraska
    Posts: 507
    For 30-378 I use a full length bushing die, I do not like dragging an expander through the neck.
    I also have a 30-378 neck sizing bushing die and don't use it because with max loads they need to be FL sized. If I was going to shoot mild loads I'd use the 300Wby.
    Reply With Quote


    Thread Tools
    Display Modes

    Similar Threads for: help sizing .30-378wby brass
    Thread Thread Starter Forum Replies Last Post
    New Brass and F/L sizing Bishop Reloading 6 05-27-2011 11:43 PM
    Sizing brass up muleyman Reloading 5 12-11-2010 08:38 AM
    brass sizing question? outfitter55 Reloading 21 06-05-2010 09:40 PM
    Sizing new brass Iron Worker Reloading 7 12-11-2008 03:32 PM
    270 Wby brass won't go into sizing die!! sambo3006 Reloading 14 08-17-2008 11:27 AM

    All times are GMT -5. The time now is 02:19 PM.

    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC