can i re barrel a 8mm mauser 98k to 300 win mag?
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Old 01-22-2012, 06:59 PM   #1
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Default can i re barrel a 8mm mauser 98k to 300 win mag?

itd be an original german 98k, not a knockoff or anything
but i was wondering the reality of having it re barreled to a 300 win mag

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Old 01-22-2012, 07:35 PM   #2
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Need to check pressures of 8mm to the 300wm I think you will find it wont take the pressures have to remember the age of action also talk to a competent gun smith also bolt face may be to small might be safer and cheaper to just buy a 300wm I have a lefty wm in a Remington 700 with a shillien trigger Teflon coated , muzzle break,and in a burl maple stock with walnut in lay will sell after my divorce if i still have it kicks like a 243 and accurate asking 900.00 will talk and send pics later

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Old 01-22-2012, 09:11 PM   #3
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A 98 action is plenty strong for a .300wm. The bolt face will have to be altered by a gun smith because of the belted magnum cartridge. The whole purpose of the existance of the short belted series of magnums by Winchester, all based on the .458 case include the .264, 7mm Rem., .300, .338, and the .458 was to have a belted magnum in .30-06 length so that they would function and feed through regular length Mauser 98 and similar actions. The Mauser 93, 96, and similar actions are a different story and may not take the higher pressures of the magnums; but the 98 is fine for them. If in doubt, have the smith check it out before he alters the bolt face.
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Old 01-22-2012, 10:11 PM   #4
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Pretty sure 300 Win Mag is too long for the 98 action, unless you
handload or stick to the lightest (shortest) factory ammo.

I've seen several really nice 300's built on the 1917 Enfield action--
it's just a bit longer than the 03 or 98.

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Old 01-22-2012, 10:17 PM   #5
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The action will be fine, the mag well and feed ramp will have to be modified. Why not look into a 9.3x62? Plenty of knock down power w/ that beast.

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Old 01-23-2012, 12:55 AM   #6
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Cost is high for this project - about the cost of another gun.
Some used the Norma mag as it is shorter overall length.
My suggestion is to buy another gun, then you can have two for twice the pleasure.
The 8 m/m is not that bad a round to start with.

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Old 01-23-2012, 11:57 AM   #7
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Quote:
Originally Posted by BillM View Post
Pretty sure 300 Win Mag is too long for the 98 action, unless you
handload or stick to the lightest (shortest) factory ammo.

I've seen several really nice 300's built on the 1917 Enfield action--
it's just a bit longer than the 03 or 98.

What do you mean "pretty sure?" Please read my post. Am I just blowing smoke? I am damn sure that I am right. The .300 Win.Mag, along w/ the 3 other cartridges were designed to be able to be used in Mauser, Springfield, Model 70, and similar regular length actions in order to make rifles for the magnum cartridges as they would not have to be made in the expensive longer magnum actions. The Mauser 98 action is also plenty strong for this caliber. I am not making this up. Read about any of these four cartridges in any Speer reloading manual for example and then compare their maximum total cartridge lengths and you will see that I am correct in this matter. When you measured the 300 WM, and then measured the action length of the 98 Mauser, what measurements did you get?
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Old 01-23-2012, 09:26 PM   #8
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Easy killer, You are correct. I think when most people think of a standard Magnum, they think length, which is incorrect.

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Old 01-23-2012, 10:15 PM   #9
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I have two custom 98k rifles made for 300 win mag and 308. It would be cheaper to buy one that has already been converted and customized. I'll put a picture on here tommorow. I have a Weatherby 300 Weatherby mag that is my favorite hunting gun when I go out west. I saw some K98Ks in shotgun news not long ago for a good price.
If you can find an old 1903 Springfield at a good price, you can make the same calibers as a Mauser and it sort of looks like a Mauser. Go all out and make a 338. I have one .

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Old 01-24-2012, 12:13 AM   #10
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Quote:
Originally Posted by chewchew View Post
I have two custom 98k rifles made for 300 win mag and 308. It would be cheaper to buy one that has already been converted and customized. I'll put a picture on here tommorow. I have a Weatherby 300 Weatherby mag that is my favorite hunting gun when I go out west. I saw some K98Ks in shotgun news not long ago for a good price.
If you can find an old 1903 Springfield at a good price, you can make the same calibers as a Mauser and it sort of looks like a Mauser. Go all out and make a 338. I have one .
Quick history on the 1903. The U.S. govt paid a fee to Mauser to build the '03 after it was found that they were guilty of patent infringement. Now you know why it looks like one!

"During the Spanish-American War, it was recognized that the Spanish Mauser Model of 1893, exhibited characteristics superior to the "trapdoor" Springfield and Krag-Jørgensen rifles carried by the United States troops. On August 15, 1900, Springfield Armory completed an experimental magazine rifle which they believed to be an improvement over the Krag. They fashioned a clip loading magazine rifle in which the cartridges were contained within the stock, preventing damage to an otherwise exposed magazine. It was approved for production in as the Model 1903. Mauser later sued for patent infringement and won royalties from Springfield.[8]"

The .30-06 is also a child of the 8x57. The case was lengthened to 63mm, but uses the same case head and diameter.
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