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Old February 18, 2010, 02:20 AM   #1
Ignition Override
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Old Brazil Mausers in 30-06: how strong are the chambers?

Have heard about these, and that some were supposedly built in the 1880s and converted to 30-06 in the 1940s or 1950s.

Already have read that original Spanish/Latin American Mausers (designed for pressures of the 7mm round) can be at the engineering design limits when converted to .308.

Have also read that some post WW2 Brazilian conversions to 30-06 were done with steel which was hard but brittle. Were all conversions to this caliber done after WW2, or were some done in the 30s or early 40s?
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Old February 18, 2010, 11:47 AM   #2
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If it's on a Mauser 98 action I don't see how there could be any issue. Which model are you speaking of?

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Old February 18, 2010, 12:09 PM   #3
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Brazilian Model 1907 and later rifles were built on Mauser 98 actions, and are plenty strong. Many of these rifles were converted to 30-06 in the 1950s after the USA brokered a peace deal in South America and agreed to supply military hardware and supplies.
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Old February 19, 2010, 02:38 AM   #4
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The buddy who (lives three hours from here) will loan it to me for quite a while says that it was manufactured as a muzzle loader in the late 1880s, but I have no idea from where he received his information.

My question is - if the conversion to 30-06 Was done by the Brazilians - what type of action they used in it.
Maybe they were designed for the US Springfield rifles and some were sold to Brazil during or after WW2?
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Old February 19, 2010, 02:40 AM   #5
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Brazil did not use Mausers before 1894, and most of those were removed from service before WW2 so they may not have been rebarreled. Model 1907 was the first Mauser Brazil issued (M98 variant).

Before Mausers, many South American armies used Comblain rilfes, but I doubt even the most sun-addled infantryman would opt to fire a Comblain rebarreled for 30-06. I have seen Remington Rolling Blocks chambered in 7X57 and 30-06, but I am not sure if Brazil had any of them in their arsenal.

A picture is worth a thousand words.
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Old February 19, 2010, 03:53 PM   #6
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Thanks gents.
When I drive down in a few weeks to pick it up, will learn much more about it.
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Old February 10, 2012, 03:10 PM   #7
landlord
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I have one of these rifles and need a couple parts. mine is a 08/34 .30 I will post pics as soon as I figure how.
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Old February 10, 2012, 08:25 PM   #8
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FWIW, there just might be some confusion somewhere, and it might be an Argentine 1909 7.65 Mauser (98) rechambered to .30-06, a common practice in the 1950's, when cheap milsurp rifles were plentiful, but gennie ammo unobtainium.

BTW, some of the world's finest custom sporting rifles have been built based upon military 1909 Argies - it's the only military rifle issued with a hinged floorplate, AFAIK.

.
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Old February 11, 2012, 07:10 PM   #9
landlord
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heres the pictures of my brazilian .06 and some of my 98 that was sported even thought its all matching numbers, was like that when I got it.
Attached Images
File Type: jpg Rifle 006.jpg (224.0 KB, 71 views)
File Type: jpg Rifle 007.jpg (233.7 KB, 47 views)
File Type: jpg Rifle 008.jpg (228.2 KB, 48 views)
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Old February 11, 2012, 07:59 PM   #10
landlord
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the receivers look the same and the bolt seems to fit both of them, does that mean I got get a 98 8mm bolt and have it work in the .06?
Attached Images
File Type: jpg Rifle 009.jpg (244.3 KB, 44 views)
File Type: jpg Rifle 010.jpg (244.3 KB, 35 views)
File Type: jpg Rifle 011.jpg (243.7 KB, 33 views)
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Old February 11, 2012, 08:48 PM   #11
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What you have is a Brazilian made Model 1908 rifle version.
Most of the 1908's were made in Germany by DWM and they're famous for their quality.
Later on, Brazil started making the rifles in Itajuba, and the quality wasn't as good.
By quality I mean the fit and finish, not the strength.

Originally, the Brazilian 1908 was chambered in the 7mm Mauser.
Later, rifles were reworked to 30-06 rifles because we gave them large quantities of surplus ammo.
Yours is one of the re-works.

In order to convert to 8mm Mauser you'd need a new 8mm barrel correctly fitted and head spaced, not a new bolt.
If you have a 30-06 rifle that needs a new bolt for some reason, you'd have to have the rifles head space checked and possibly the barrel re-set to correct it.
You SHOULD NOT just buy a bolt and put it in. The head space can be off enough that you could have an exploding rifle near your face.
The only way to know is to have a gunsmith check it with a head space gauge.

The later Itajuba rifles were more or less interchangeable with parts from the earlier DWM made rifles. Note that as always with old guns parts may need adjusting to fit and function correctly, and some parts may not work in some rifles due to wear of the rifle and the replacement parts.

For parts for your rifle, you can buy DWM Model 1908 or Itajuba 1908 parts, or in many cases, almost any large ring Model 1898 Mauser rifle variant parts can be used.

Here's sources for parts:

http://www.gunpartscorp.com/catalog/...aspx?catid=313

http://ssporters.com/
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Old February 12, 2012, 01:25 AM   #12
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I think I can pretty well guarantee that no one converted a muzzle loader to .30-'06, or if he did, I don't want to fire it.

Jim
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Old February 12, 2012, 03:57 PM   #13
landlord
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my rifle is a Itajuba so the bolt from a 98 would fit if the head space is right?
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Old February 12, 2012, 08:43 PM   #14
Dfariswheel
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This totally depends on the bolt and rifle.
98 Mauser bolts are the same design, but different manufactures will have slight differences and may not fit or operate correctly.

Even the same make of bolt may tend to bind in an action, and bolts with worn parts may have problems with the safety not working correctly or the trigger not functioning correctly.

If possible buy a bolt made for the Brazilian 1908 rifle or your Itajuba version.
A gunsmith can make sure it fits and function properly, and check and if necessary re-set the head space.
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Old February 12, 2012, 09:36 PM   #15
PetahW
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In short - NO bolt, that you'd install in existing action (no matter how close a match), should be considered a "drop-in" - even if it will actually slide in/close.

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Old February 13, 2012, 11:52 AM   #16
landlord
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just want to make sure I was understanding everything so I made sure I was going to be safe, thank you for helping. my gunsmith is only around four hours a day and I havent been able the catch time with him yet.
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Old February 17, 2012, 01:08 AM   #17
Ignition Override
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This was a tentative (possible) gift, but the possibility ended back in 2010.
That's why this thread was forgotten and no other response was added.

I lost track of the owner back in '10 (seldom went near Starkeville), and I never acquired the rifle.
Your responses are appreciated.
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Old December 2, 2012, 01:46 PM   #18
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so will any mauser 98 firing pin work in the 08/34.30 and what size barrel will work
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Old December 2, 2012, 05:35 PM   #19
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hinged floorplate

I just read this thread and I am repling to the post about the Argentine 1909 Mausers with a hinged floorplate. Beg to differ, but the 1904/39 Portugese also has a hinged floorplate.

Jeff
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Old December 2, 2012, 07:42 PM   #20
Dfariswheel
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so will any mauser 98 firing pin work in the 08/34.30 and what size barrel will work

"Most" Model 98 firing pins will work, but again, there are minor differences that may cause problems.

Most Model 98 Mauser's used the same barrel threads, but again, there are some exceptions.

Bottom line is, you have to know something about the various Model 98 actions.

If you intend to have a Mauser re-barreled to a cartridge not original to your specific model, you have to do some research to figure out what cartridges are compatible with that action.
As example, most rifles will need work on the magazine box and possibly feed ramp to allow using the longer 30-06 cartridge but usually work okay as-is with the .308
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Old December 3, 2012, 05:51 AM   #21
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Landlord, the stamp on the right side of my actions front receiver does not read 08 they read 30-34 as in 30 Cal. converted in 1934, the rifle is unique and different and by some claimed to be suspect. I purchased 5 for $25.00 each, case bodies were still in the chambers of a few, no case head. Because I was informed they were suspect I used one barrel and one bolt to test fire all the receivers, switching receivers with one barrel and one bolt amounted to .001” difference in chamber length, the barrel was a Belgium commercial barrel chambered to 30 Gibbs with .110 case head protrusion. I used the configuration to form cases for the 30 Gibbs.

Suspect? the magazine is longer than the 98 type Mauser magazine, the floor plate is longer than the 98 floor plate, not necessary but when the rifle was configured the opening was increased by removing metal from behind the lower lug and that is the reason for the label ‘suspect’.

I am not the fan of fillers, I do not use Wheaties, Cheerios or grits (I like grits) I use a load that is going to form the case the first time I fire it. Because ‘time is a factor I used an ‘overload’, friends said “that is some scary stuff”, then there is the rust and pits on two of the receivers, still pondering what direction to go,

Barrels, the bores are a waste, but the chambers? Perfect chamber gages, with 62 chamber reamers I can not miss, the barrel chamber makes a different chamber gage than the ones sold on the Internet.

Forgot, there was nothing suspect about the receivers.

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