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.50 BMG Shooters

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Old 12-28-2012, 08:46 PM
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Join Date: Jan 2012
Posts: 159
.50 BMG Shooters

Does anyone here have the DEPTH of the bolt face on some different model .50's? What I am really trying to figure out is how far the cartridge case sticks out the rear of the barrel when chambered.

It doesn't have to be an exact number but down to the .00" at least would be nice. If anyone has a bolt action gun and could pull the bolt and just measure the DEPTH for me that would be great.


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Old 12-29-2012, 10:25 AM
Platinum Member
Join Date: Apr 2003
Location: North Bend, Oregon
Posts: 1,212
Re: .50 BMG Shooters

The bolt nose recess dimension won't tell you much. The distance the cartridge sticks out of the barrel or chamber is dependent on the action used. Some sit in a recess so the cartridge is near flush. Head space is still measured with gauges and a depth gauge. With a cone nose bolt you measure from the shoulder of the barrel to the bolt face and compare the shoulder to Go-Gauge to determine headspace.

What are you working on?
Build a man a fire and you heat him for a day.
Set him on fire and you heat him for life.

Only accurate rifles are interesting.

Gordy and Brady.
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Old 12-30-2012, 07:33 PM
Silver Member
Join Date: Jan 2012
Posts: 159
Re: .50 BMG Shooters

That is what I was trying to figure out. How much the cartridge stuck out the back of the barrel on some different actions with the .50 BMG. I thought no matter the action or depth of the bolt nose the space between the bolt and the back of the barrel is probably kept within .01? Therefor the bolt face depth dimension would get me close.
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