View Full Version : Need help 8MM Mauser

July 23, 2012, 03:12 PM
Hello all,

My Grandfather passed away and left me a rifle. I didnt know what it was so i took it to the local gun shop and he said it was a 8MM Mauser Sporterized . I would like to know a little more about this rifle because its a pretty cool one to my collecton plus it was my grandfathers....The only markings are on the side of the rec.82806


July 23, 2012, 03:14 PM
Other pic

July 23, 2012, 03:19 PM
I'm no expert, but,,,

That bolt doesn't resemble any Mauser action I've ever seen,,,
It certainly doesn't resemble my K-98 at all.

In fact, it looks more like a Japanese rifle,,,
The knurled end of the bolt looks like a 7.7 Japanese rifle I once owned.

I would take it to a different gun store,,,
You need a second opinion my friend.



July 23, 2012, 03:19 PM

July 23, 2012, 03:20 PM
Yea thats what i thought myself

July 23, 2012, 03:24 PM
Doesn't look like a Mauser, but rather a Japanese Arisaka (Type 99?). Are you sure it's chambered for 8mm Mauser rather than the Japanese 7.7mm round? Apparently the Chinese did convert some Arisakas to 8mm Mauser but it isn't exactly a common thing to run across.

edit: looks like someone beat me to it.

July 23, 2012, 03:31 PM
See the box he had it in had a 7.62 jap round box in and a pack of winchester 8mm's so i was lost .I started doing research on mausers and couldnt find anything like this so i thought why not just ask the people who know the most

July 23, 2012, 03:54 PM

Check this web site out and see if you can make any sence of it I cant

July 23, 2012, 04:04 PM
this is an odd little rifle.
1. that is 100% without a doubt NOT a mauser. only one group of rifles has a bolt style resembling that and it is the japanese Arisaka. I am not familiar enough with them to know the exact model.

2. japanese rifles used oddball ammo that were and still are hard to get ahold of. not one of them should be chambered in 8 mauser unless your grandfather had it rechambered to match all his VFW buddy's bringback mausers.

3. the lettering and markings on the side of the reciever should not be hindi but should be japanese numerals. there should be a round flower under the scope bases.

all in all I am stumped. I have never heard of an arisaka being rechambered and very few people sporterized them because the ammo was so hard to get. you may have an interesting journey ahead of you.

EDIT: if it helps, the first pic you posted showing the serial and a pair or stamps shows that it IS a japanese arisake that has been through either the arsenal in Koishikawa or Kokura

July 23, 2012, 04:19 PM
What would be the worth of something like this??

July 23, 2012, 04:26 PM
sporterized japanese type 99s are going for less than 300 on gunbroker in thei original caliber, the arisaka really doesn't bring much to the table for hunters or sport shooters so the only people that really want them are collectors and they are usually only willing to buy sporterized as long as they are returnable to military configuration. yours has a bent bolt and if it truly is 8mm then it is definitely not able to return to military configuration.

I would say that it is only going to bring in 250 dollars or so. I would make sure it's safe to fire, keep it in the family and enjoy it the way your grandfather did.

EDIT: I believe yours is a type 99. here (http://www.gunbroker.com/Auction/ViewItem.aspx?Item=296869518) is what they look like in stock configuration

July 23, 2012, 04:26 PM
It also has a low serial number and i just called my wife to ask about the symbol stamp on tiop and she said it has nothing???

July 23, 2012, 04:41 PM
I think thats what im going to do...Maybe let my kids try it out at the deer lease if its safe to fire

July 23, 2012, 05:33 PM
If it's a 7.7 Jap and you try shoving 8mm Mauser through it, that would not be conducive to a second shot.

What did "the gunsmith" do or look at to declare it an 8mm Mauser?

- OP's on top
- Mine on the bottom (2)


PS: That is a Jap Arisaka which someone has butchered (look where the right rear flange of the receiver shield has been ground off behind the bolt. You have NOTHING between you and eating the bolt if the forward locking lugs crack. )

I'd be very leery of giving it to anyone for field use

July 23, 2012, 07:58 PM
You may just have a different bolt.. I just left the arms room in Houston tx and he had one pretty identical to mine. Plus mine is missing the shield but it's not grinded down at all . If it is I need to meet the person who did it because he must be awsome at edging . But I did run 5 rounds threw it because he happened to have 2 boxes of them(pretty high) but all in all was cool but not something I would take deer hunting or target shooting. But his also didn't have the shield and he said it would be fine but I think I'm gonna get another opinion for Pasadena gun center.

July 23, 2012, 08:36 PM
was it 5 rounds of 7.7 or 5 rounds of 8mm?

July 23, 2012, 08:39 PM
But then again here is a Naval Type 99 Same one the gentelman i met tonight had with the same bolt but thanks for the info on my nothing but a BUTCHERED rifle.Do me a favor save this pic and then zoom in on the bolt looks pretty identical to mine NOT like yours...but please embelash on my BUTCHERED rifle some more please

July 23, 2012, 08:40 PM
It was 7.7 he said the guy who told me it was a 8mm was crazy and never try to cycle a 8mm threw this

July 23, 2012, 08:46 PM
Pretty identical to mine

July 23, 2012, 10:10 PM
You have the follow-on Type 99, which did away with the effective third safety lug formed by the
bolt/receiver cut on the Type-38 (which PO Ackley considered/White Labs tested to be the
strongest of all military actions). The 99 relies purely on the front two locking lugs.

I'm very glad the second gun store gave you the correct 7.7x58 (JAP) ammunition. If you reload,
the Handloader's guide recommends forming the cases from 30-06 brass, and using the British .303 bullet
which runs a .311-313 groove diameter (if you're lucky). But now you have some brass to start.

Jim Watson
July 23, 2012, 10:32 PM
The Handloader's Guide is marginal. 7.7 is somewhat larger in head diameter than .30-06 and there will be more brass expansion than desirable. You can get away with it if your 06 brass is good and you don't push the loads, but it is always smarter to use the right brass if at all available.

Or just pay the price for factory loads. This is not a rifle you are likely to be shooting a whole lot.

July 24, 2012, 07:30 AM
Depending on whose reference one uses, the head diameter variance is 0.003" to 0.007" (Speer vs Sierra manuals).
That's probably peanuts compared to the chamber variances in those rifles. (I still have the Type 38 that
produced a rather dramatic bulge off to one side of factory 6.5x50 Jap because of where the extractor holds
things in a overly large chamber -- and that's in one of their "high quality" rifles.) ;)

I partially resized for a while (i.e., didn't overly work the brass) ...and finally went to forming cases from
243 Winchester. Those fit the chamber perfectly (which tells you the chamber dimensions I was working with...
...more than 20 thousandths) :eek:

Neither rifle is loaded/should be loaded to particiularly high pressures.

postscript: Dollars to donuts the OP has bulged brass from what he fired in is rifle -- even factory

Mike Irwin
July 24, 2012, 08:21 AM
If I'm not mistaken, on the Type 99, even though the "safety lug" was greatly reduced in size, the bolt handle still turns down into a notch in the receiver, with that notch effectively acting as the safety lug.

Yes. You can see what I'm talking about here in this picture of a late-war Type 99.


Jack O'Conner
July 24, 2012, 08:25 AM
Years ago, I hunted in Spain with a rented rifle in 7.9mm. I toppled a trophy fallow stag with one shot at approx 75 yards. Performance seemed about the same as my .308 rifle.


Mike Irwin
July 24, 2012, 08:30 AM
8mm Mauser and .30-06 are very similar in their performance curve, which means that they are right in there with the .308 Winchester.

July 24, 2012, 11:32 AM
i took it to the local gun shop and he said it was a 8MM Mauser Sporterized

You need to find a shop that hires people who know what they are talking about. This kind of ignorance could lead to serious problems!!!
I guess any sporterized military rifle that this guy sees he calls a "Mauser"

July 24, 2012, 04:15 PM
You need to find a shop that hires people who know what they are talking about. This kind of ignorance could lead to serious problems!!!

I believe that he already has as he has test fired it and gotten a proper appraisal of it already.

July 25, 2012, 07:39 AM
Try here:



July 30, 2012, 07:16 PM
Thank God you didn't attempt to fire 8mm Mauser ammo through that Arisaka! (it may not have chambered though anyways - but just the same)

Mike Irwin,

It may be better said that the .308 is right in there with the 8mm Mauser and the .30-06, rather than the other way around. The old parent cartridges might take offense!