how to: 30-378 to 338-378????

Discussion in 'Reloading' started by lovdasnow, Nov 6, 2010.

  1. lovdasnow

    lovdasnow Well-Known Member

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    ok, i think i already know the answer, but just wanted to make sure because i know how expensive this brass is.

    I've got 345 pieces of 30-378 weatherby brass, and am building a 338-378. I was going to start resizing and necking up brass, but wanted to double check here before i got going.

    in regards to necking up: all i have to do is screw in the 338-378 dies, and run the 30-378 brass through them right? what's the best way to lube the inside of the case neck?

    thanks guys
     
  2. trueblue

    trueblue Well-Known Member

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    I use Imperial wax to neck up. Also, I use a Sinclair mandrel with the 338 expander.
     

  3. lovdasnow

    lovdasnow Well-Known Member

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    i didn't have any imperial wax, so i just lubed the cases and used a qtip to lube the inside of the neck before i ran them through the redding dies.

    i did 6 cases and they all looked good and didn't have any problems. is the 338 expander necessary, or is that the same thing as just running them through the 338 die?
     
  4. trueblue

    trueblue Well-Known Member

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    I went with the expander after I bent the stem trying to do it with the die.
     
  5. lovdasnow

    lovdasnow Well-Known Member

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    i did about 60 pieces that look good, and ruined about 6-7. so maybe 10% screw up rate.

    die seems to be holding up well though.