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chamber neck diameter??

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Unread 06-01-2010, 09:34 AM
Silver Member
Join Date: Dec 2005
Location: Los Anchorage Alaska
Posts: 256
chamber neck diameter??

loaded brass measures .310. What should I have the neck cut to? .317 sound ok??


Last edited by Idaho_Elk_Huntr; 06-01-2010 at 11:31 AM.
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Unread 06-01-2010, 04:54 PM
Gold Member
Join Date: Jan 2007
Location: South Dakota
Posts: 753
Re: chamber neck diameter??

IMHO you want no less than .0025 clearance all the way around between the outside of the neck and the inside of the chamber on a hunting rifle.

Save the super squirrely tight stuff for the bench rest guys.
Chad Dixon
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Unread 06-01-2010, 08:12 PM
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Join Date: Jul 2004
Location: Texas
Posts: 7,193
Re: chamber neck diameter??

Originally Posted by Idaho_Elk_Huntr View Post
loaded brass measures .310. What should I have the neck cut to? .317 sound ok??

.004 To .008 Is exceptable but .004 to .006 is preferred for all but the dangerous game
cartriges that are crimped (.006 To .008) are preferred so feeding is not a problem
under certain circumstances.

Anything under .004 can be problematic unless you are a very careful re loader.

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Unread 06-03-2010, 08:41 PM
Gold Member
Join Date: Dec 2008
Posts: 890
Re: chamber neck diameter??

I went thru that 25 years ago shooting bench rest comp. I would never ever want to turn another neck again especially on a hunting rifle. Way to many things can go wrong.
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Unread 06-05-2010, 06:22 PM
Junior Member
Join Date: Mar 2008
Posts: 8
Re: chamber neck diameter??

So what would be considered maximum? Especially on a dangerous game rifle.

Just checked a few that ranged from .011" in a 416 Remington down to a .005" in a 404 Jeffery.

Those are total differences between loaded round and the neck of the reamers.
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