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Reloading the 375 Super Mag
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Bob Toppen
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May 19, 2021 - 9:52 pm
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Hello all,

I'm pretty new to this site and bought my first DW revolver and looking for advice on reloading this cartridge.  I'm a seasoned reloader but new to the 375.  I'm having a difficult time with sizing the cases (375 Win cut down shells) After running them through my Redding die the shells are to big and the bullet (Sierra 200 grain flat point) slips easily into the case with no tension.  Has anybody experienced this problem and if so what am I missing?

Cases are all trimmed to 1.61 using Redding trim die. 

Bullets all measure .375, caliper measurement.

Any advice will be appreciated.

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rwsem
SOWELA (Southwest Louisiana)

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May 20, 2021 - 5:37 am
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Have you measured the diameter of the bushing or tried re-sizing without the decapping stem and bushing in place?  Make sure the form die is screwed down all the way. I also use Redding dies but haven't experienced any issue like that.

Technically, the glass is always full; half liquid, half air....

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