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300WM neck diameter

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Unread 03-19-2013, 08:50 AM
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Join Date: Nov 2004
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300WM neck diameter

A few years back I had Gre-Tan build me a WM and the chamber was cut with a Lapua spec reamer with .337 neck. I'm running low on Lapua brass and don't want to start turning brass and perhaps try running factory through her.

Greg responded to my email, but asked what diameter I wanted. I replied asking for his recommendation, but I'm curious what diameter others are running in their WM.

Thanks-

Wade
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    Unread 03-19-2013, 09:06 AM
    Edd Edd is offline
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    Re: 300WM neck diameter

    Isn't the thickness of the brass you intend to use the first thing you need to know? If you don't know the neck diameter of the ammo you will be using, you are just guessing. If you are guessing you should probably guess SAAMI specs. SAAMI is .3407"/.3421" .
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    Unread 03-19-2013, 03:37 PM
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    Re: 300WM neck diameter

    Quote:
    Originally Posted by Edd View Post
    Isn't the thickness of the brass you intend to use the first thing you need to know? If you don't know the neck diameter of the ammo you will be using, you are just guessing. If you are guessing you should probably guess SAAMI specs. SAAMI is .3407"/.3421" .
    I'm unsure of the average thickness of factory ammunition these days. I'm seeing everything from .339 and up during my search for spec.

    Thus my quesiton, What has been working for others? I'd Like to stay as minimum as possible, yet stay no turn.
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    Last edited by wadevb1; 03-19-2013 at 04:10 PM.
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