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Converting .348 Win to 10.4mm Italian Vetterli

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SWIHARTMARK
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Converting .348 Win to 10.4mm Italian Vetterli

#1 Post by SWIHARTMARK » Tue Jun 06, 2017 6:48 pm

Okay, has anybody out there actually done this successfully? I intend to anneal my brass first, but how much expansion can that case take at a time?

Best Regards,

Mark

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RenHoek
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Re: Converting .348 Win to 10.4mm Italian Vetterli

#2 Post by RenHoek » Tue Jun 06, 2017 8:43 pm

If you have the expanders - or can make them - I'd go 357, 375, 400 or 410 then on to 430. Ren
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Re: Converting .348 Win to 10.4mm Italian Vetterli

#3 Post by les1234 » Tue Jun 06, 2017 10:11 pm

I haven't tried it with .348, tried fire forming some PRVI 8mm Lebel cases, with no success, even after annealing.

SWIHARTMARK
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Re: Converting .348 Win to 10.4mm Italian Vetterli

#4 Post by SWIHARTMARK » Wed Jun 07, 2017 5:15 pm

I'm guessing its just too much to expand at one time. .323 to something like .430 is literally a stretch. A case conversion book suggests expanding in .020 intervals to avoid splits. That seems harsh if the brass is already annealed. Five expansions also take some time.

Best Regards,

Mark

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Re: Converting .348 Win to 10.4mm Italian Vetterli

#5 Post by Horsefriend » Wed Jul 26, 2017 9:56 pm

the ammo that came with my Vetterli is formed from .348
Scott

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