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#5880643 - 08/16/15 07:03 AM need gun help
Stonemck Offline
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Registered: 09/09/09
Posts: 1413
I bought a custom Mauser action gun with a casting from a shop on gun broker. The guy said he measured the casting and it was a 308 Norma mag....it's not. They made it right but now I have a rifle and no clue what it's chambered for. I need some help. Looking for a gunsmith or someone that can either measure or has the blanks to put in rifle to figure it out. Mckinney area. I know it's a belted magnum case with the same shoulder length and taper as 308 Norma but it's almost half an inch shorter.......help.

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#5880974 - 08/16/15 11:29 AM Re: need gun help [Re: Stonemck]
WileyCoyote Online   content
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Registered: 09/01/04
Posts: 4535
Loc: The Dogwood Capital of Texas
Closest guy I TRUST to do that and have used for some real live gunSMITH kinda work is Doc's in Carrollton...mebbe FJG's guy can help, or possibly Vernon over in Wolfe City....or even Larry Pockrus in Ponder.

IMO you are on the right track with a casting of the chamber...you DO NOT want to guess about something like this.
Ron
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#5880996 - 08/16/15 11:50 AM Re: need gun help [Re: Stonemck]
nsmike Offline
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Registered: 05/02/12
Posts: 4218
Loc: MN
If you're lucky, it'll be just a bit longer and the neck a bit smaller than the 308 Norma, resulting in a 300 WM. You still need a professional that understands chamber casts.
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#5881007 - 08/16/15 11:59 AM Re: need gun help [Re: Stonemck]
FiremanJG Offline
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Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
A .30 caliber belted magnum cartridge that is 1/2" shorter than a .308 Norma Mag?
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#5881051 - 08/16/15 12:46 PM Re: need gun help [Re: Stonemck]
TexFlip Online   content
THF Trophy Hunter

Registered: 08/18/12
Posts: 8652
Loc: Harris County
350 Rem mag?
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#5881058 - 08/16/15 12:54 PM Re: need gun help [Re: FiremanJG]
nsmike Offline
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Registered: 05/02/12
Posts: 4218
Loc: MN
Originally Posted By: FiremanJG
A .30 caliber belted magnum cartridge that is 1/2" shorter than a .308 Norma Mag?

Missed the 1/2 inch shorter
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#5881061 - 08/16/15 12:55 PM Re: need gun help [Re: Stonemck]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 9433
Loc: Lewisville, TX
First, it is a 30 caliber barrel? Second, why do you say half an inch shorter? If the case you are trying to put in the rifle won't fit by half an inch, that could be a different size case easily. The correct thing to do is to get a chamber cast of the chamber. This will tell you what it is. The first chamber cast, was it not of this rifle? Or why did that not work correctly?
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#5881081 - 08/16/15 01:14 PM Re: need gun help [Re: Stonemck]
nsmike Offline
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Registered: 05/02/12
Posts: 4218
Loc: MN
Chad's right, think about this, the 308 Norma has a neck diamete of 7.85mm the 300 WM 7.8 where do you think it would hang up? If it hangs up on the neck the neck is approx a 1/2 inch.
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#5881085 - 08/16/15 01:18 PM Re: need gun help [Re: Stonemck]
syncerus Online   content
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Registered: 12/01/08
Posts: 1993
Loc: Dallas, TX
30 cal, short and fat says .30-284 to me; but there's no belt.
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#5881425 - 08/16/15 05:47 PM Re: need gun help [Re: Stonemck]
postoak Online   content
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Registered: 08/19/09
Posts: 2563
Loc: The Woodlands, Tx
If you have a cast, why do you need another one done? Take measurements and post here.

Are you sure the barrel is .308"?

Are you sure this is a belted magnum?
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#5881908 - 08/16/15 10:09 PM Re: need gun help [Re: Stonemck]
Stonemck Offline
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Registered: 09/09/09
Posts: 1413
To clear everything up. I'm not looking to do another cast I just need to figure out what I have. If I had calipers I could measure it. When I hold the casting next to the 308 Norma the angles all look the same but the case is longer and yes it has a belt at the bottom. Yes 30 cal.

Pic upload isn't working or I could post pics next to the Norma round.

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#5882009 - 08/17/15 02:02 AM Re: need gun help [Re: Stonemck]
charlesb Offline
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Registered: 04/07/10
Posts: 1408
Loc: West Texas mountains
This is a job for a gunsmith. You can't really eyeball something of this nature, and if the gunsmith says that another chamber cast is in order, then I would not argue with him.

308 Norma Magnum chambers are unusual in that they do tend to vary, especially in the throat area.

The sooner that you have the issue professionally resolved, the sooner you'll be safely and successfully enjoying the new rifle.

308 Norma Mag has a leg up on .300 Winchester Mag to some extent, as it has a bit more neck on it.

It may be that you have a wildcat on your hands, a shortened 308 Norma mag. - If so, then a gunsmith will be able to rent or buy a .308 Norma Mag reamer a de-wildcat it for you. - Or possibly fix it up as .300 Winchester Mag if you prefer. - Or re-barrel if you prefer.

You'll never know until it is in the hands of a good gunsmith. That's the way to go.


73 DE Charles, N5PVL


Edited by charlesb (08/17/15 02:07 AM)
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#5882175 - 08/17/15 08:40 AM Re: need gun help [Re: Stonemck]
Stonemck Offline
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Registered: 09/09/09
Posts: 1413
Who close to Mckinney is good enough to figure this out for me...I haven't needed a gunsmith in a long time.

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#5882380 - 08/17/15 10:43 AM Re: need gun help [Re: Stonemck]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 20310
Loc: Texas
Originally Posted By: Stonemck
Who close to Mckinney is good enough to figure this out for me...I haven't needed a gunsmith in a long time.


Check your PMs. sent you the number of one in Wylie
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#5882912 - 08/17/15 04:03 PM Re: need gun help [Re: Stonemck]
Stonemck Offline
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Registered: 09/09/09
Posts: 1413
Finally got to measure the casting....here they are.

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