The next custom an Oberndorf M98: What to chamber it in?

What to chamber the Oberndorf in?

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    233
Ardent said:
With .308 for scale, the new .577,

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This is stupid. I like it!;)
 
I’d saved that blank for ten years, so I’m glad to see it shaping up, even tried to sell it on here for under a grand Canadian as a roughed Mauser stock and no takers. The uncut wood’s worth twice that let alone the time, so now I’m glad I didn’t find a buyer. :p I’m just about fully married to the .577-500 Jeffery wildcat I made here as the chambering. The only real purpose I need more guns for is an all out stopping rifle for Grizzlies, I actually don’t think this is the right path but a hot belted magnum isn’t fitting my gut feel for this project. Plus, I like to experiment. If the .577 Morrison doesn’f work out I’ll back peddle to a .500 Jeffery. Was big on that 10.75x68 thought, but seeing as I’m fully stocked for .375s picking up .404 bore didn’t seem sensible.
 
I like where this is going. When i first read the poll options i thought there was nothing big enough in that list for a rifle like that. It looks like its bagging for a big bore. And well sir you exceeded my expectations. Also very nice stock. I wish i had seen it when it was up for sale. I need one for my m98 460wm build
 
That’s a lot of cartridge for an M98, probably sounds strange saying that with what’s coming together here. I shied away from my favourite, well tied for favourite with 7x57, the .375 H&H after reading Kuhnhausen’s thoughts on stretched 98s. I have to acknowledge gunner8 is right in his earlier comments, at least from my current perspective. This said a modern steel M98, such as a zastava, can safely accommodate full length / .375 H&H based cartridges. The issue with original M98s is they’re mild carbon steel that is case hardened. Its strength comes in that it yields before it breaks, but with the feed ramp area being weakened then yielding and allowing the lower bolt lug support to set back, the strain goes to the much weaker top split bolt lug. Diameter of the cartridge is not an issue in the M98, it has a barrel tenon of 1.1”, more than the Model 70 at 1.0”, but length it doesn’t handle well. Plenty of .375s, .404s, and even .416 Rigbys have been built on M98s. But I no longer think I’d do it, .458 Win Mag however, absolutely! Full about face on the subject for me after researching it.
 
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Thanks for the thoughts i love hearing from people that have experince with this type of stuff. I have a magnum zavasta m98 reciever and im taking most of what i can from the back of the action. The bolt travels 1mm farther back now and the mag back no longer sits within the bolt stroke. When i pull the bolt all the way back im looking into the mag now at the inside of the mag wall metal. Kinda hard to explain lol. Ill make a thread on it once the reamer shows up. It a 8-12 week wait and ive been waiting 4 weeks now.

Ill have to take about 2.5mm from the front feed ramp to make factory 500gr hollow point weatherby ammo work. And they came from factory chambered in 375h&h and i wont be much longer then that.
 
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Evanguy said:
I like where this is going. When i first read the poll options i thought there was nothing big enough in that list for a rifle like that. It looks like its bagging for a big bore. And well sir you exceeded my expectations. Also very nice stock. I wish i had seen it when it was up for sale. I need one for my m98 460wm build
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There is the option of a .450 Vincent, or a .460 Short A-Square. Both will give plenty of go in an M98.
 
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