C vs H ring Mauser 98

First,I don't know!!
I am going to hazard a wild guess to inspire discussion,as you have no responses yet.
I built a rifle on an HVA Husky 5000 action once.It was a commercial,slightly redesigned small ring long(30-06 length) action,and originally chambered in 7mm Rem Mag.

While some bolt rifles are designed to shoulder up the bbl on the front face of the receiver ring,the 98 Mauser has the diaphram down in the receiver ring the bbl stops against.The military barrels I am accustomed to seeing are threaded to butt only against this diaphram.However,typically when fitted with a commercial bbl,the front of the receiver ring is trued,and the barrel is fitted to slightly crush agaist the diaphram,but still come up to seat a shoulder against the front of the receiver ring.

What is different about the HVA 5000 action,there is no diaphram .The bbl shoulder only has the front of the receiver to bear against.

Yours,as a 98,will have a diaphram to seat against.

Once again,I do not know the answer to your question,and what I offered may be totally irrelevant.
 
I've never heard of an "H-ring" so I don't know. All the 98 type Mausers I've dealt with have the C-ring. Some gunsmiths don't even try to get hard contact on both abbuttments which I feel is shirking. Given a choice, I'd like to see them at least make full, hard contact on the internal C-ring leaving a very fine clearance at the front of the receiver but this may be wrong since some I see bear hard at the front leaving a gap at the C-ring.
I know this doesn't help but I've missed a lot of sleep the last few days so I'm reaching for something to keep me awake.
 
Probably what they are talking about is the internal shoulder in a '98 Mauser reciver ring. On older guns it is cut through only on the right side to clear the extractor which rides over the locking lug until the bolt handle is turned down to lock. They went to the trouble to stop the left locking lug raceway short of the shoulder, leaving it solid on that side. Call it a "C" ring.

Later guns - including the highly regarded FN sporters - just ran both lug raceways straight forward through the shoulder because it was easier to machine that way. Call it an "H"ring if you like.

Your 1952 is most likely a "C" ring type.

It doesn't really matter except to the purist who wants to know his is the original design and therefore The Best. I don't know anybody who would turn down an FN sporting action just because of that one extra notch inside and out of sight. If you overload the gun so much that it becomes a weak point, you have probably blown something else out anyhow.
 
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