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Author Topic: 98 closing the bolt  (Read 1881 times)

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Offline shinjin

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98 closing the bolt
« on: January 23, 2011, 12:06:42 PM »
I am still assembling that M98 Brazilian 7x57 with the uncooperative bolt. I figured out what I did wrong regarding the extractor and can now put the bolt back in the receiver. BUT, this bolt will not close with a round in chamber? It will close without but not with?

Comments, ideas and suggestions?

BTW buying newer 1908 from Mauser Marty and will try swapping olts when it arrives.
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Offline Bigeasy

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Re: 98 closing the bolt
« Reply #1 on: January 23, 2011, 12:28:06 PM »
Wrong cartridge?  Plugged chamber?  Is the round feeding from the magazine, with the rim sliding under the extractor?  If you are trying to drop a round in and close the bolt, without feeding from the magazine, then thats the problem.  Unmodified Mausers need to feed from the magazine for the extractor to capture the rim.

Larry
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Offline billy_56081

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Re: 98 closing the bolt
« Reply #2 on: January 23, 2011, 12:33:37 PM »
Larry may have it if you are trying to drop a cartidge into the chamber and close the bolt it will not work. Try loading it from the magazine. Also if this is not the original you could have an issue of to tight of head space.
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Offline shinjin

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Re: 98 closing the bolt
« Reply #3 on: January 24, 2011, 02:49:12 AM »
Tried your suggestion. Feeds from magazine but must be forced to close. Just barely completes closure. Certainly not the smooth action I expected from a mauser.

Suggestions?
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Offline Bigeasy

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Re: 98 closing the bolt
« Reply #4 on: January 24, 2011, 07:29:02 AM »
Bring it to a gunsmith.

Larry
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Offline shinjin

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Re: 98 closing the bolt
« Reply #5 on: January 24, 2011, 07:40:43 AM »
Thanks Larry.
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Offline shinjin

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Re: 98 closing the bolt
« Reply #6 on: January 24, 2011, 09:34:21 AM »
Searching Gunbroker for parts and see 1908 Brazilian M98's listed as both long and short rifles....?

What dat mean?

Both mine are DMW stamped, in 7x57. Could my GB bolt body be wrong one (too long) for that action?

And, does that mean I need a diff after-market stock? I remember the forward screw for floor plat having a difficult time with my Hogue overmolded stock.
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Offline mrbigtexan

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Re: 98 closing the bolt
« Reply #7 on: January 24, 2011, 05:26:13 PM »
Quote from: shinjin on January 24, 2011, 09:34:21 AM
Searching Gunbroker for parts and see 1908 Brazilian M98's listed as both long and short rifles....?

What dat mean?

Both mine are DMW stamped, in 7x57. Could my GB bolt body be wrong one (too long) for that action?

And, does that mean I need a diff after-market stock? I remember the forward screw for floor plat having a difficult time with my Hogue overmolded stock.
no, the bolt will either work or it won't. i believe you should take it to a gunsmith and check the headspace. has this rifle ever been fired in your presence? did you look for signs of overpressure? the difference between long and short m98's is the barrell lengths. mausers are'nt known for there smoothness, just durability. the stock really has nothing to do with the bolt closing hard. also, are you sure that it is a '98? it could be a '93, '95, '96 and you are just describing a cock on close bolt and action.
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Offline shinjin

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Re: 98 closing the bolt
« Reply #8 on: January 28, 2011, 04:10:42 AM »
It is a 1908 brazil  so i assume it is a 98
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Offline 41 magnum

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Re: 98 closing the bolt
« Reply #9 on: July 08, 2011, 03:22:14 AM »
I have seen  bolts bind because the aftermarket stocks bedding block was too low, so the front guard screw, when pulled tight, bowed the barrel/action downwards
 
try loosening the front guard screw a 1/2 turn, then another, then another
 
bedding area might need some JB or Devcon or Acragel
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Offline Mikey

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Re: 98 closing the bolt
« Reply #10 on: July 09, 2011, 02:56:57 AM »
Shin:  Gotta ask - did the bolt close properly before you disassembled it?  If so, then you do not have the bolt back together properly.  Did you disassemble the bolt simply to clean it or was there a problem with extracting cases?  If there was a problem to begin with (ie., difficult to close the bolt, won't close on a live round, etc.) that you felt the need to replace the extractor and spring?
 
You now know that Mausers feed from the magazine and that you cannot close the bolt on a round dropped into the chamber.
 
Mauser bolts were/are individually fitted, I believe, so buying another 98 bolt for another rifle, for a swap, may not be successful and may leave you with headspace problems.
 
When you reassembled the bolt and screwed the safety block back down, the detent pin that holds the safety block in place 'click' into place on the bolt sleeve, but you have to depress the detent (at least) once more and continue to turn the safety block (another 1/2 turn) until the detent 'clicks' into place again, then the safety block is properly seated and the bolt should work properly if there were no problems with it before you disassembled it. 
 
If, after all this fails and/or you were experiencing problems with the bolt closing when you first obtained the rifle then I suggest you take it to a gunsmith who can properly fit a Mauser bolt. 
 
As the bigtexan said, Mauser bolts either work or they don't.  Some Mausers may be smooth as glass but even if you got one of the top of the line mil-surp 98s, they are still mil-surp 98s made to military specs which allow for battlefield conditions and there is play in the action; even my Swedish 98 sporter in 8mm is just the normal Swedish made 98 (but the Swedes like to think they are just that much better than the German made 98s) used for commercial manufacture and although nice and smooth it does enjoy some mil-surp bolt play.  HTH.
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Offline Hank08

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Re: 98 closing the bolt
« Reply #11 on: August 30, 2011, 07:39:58 PM »
I believe you said these were DWM rifles and they are generally about as smooth as a 98 gets.  I have 2 military 7x57
DWM m98s I bought about 30 yrs. ago and they are both very smooth plus they both will snap right over the rim of a cartridge dropped into the chamber and they came that way from the factory.  The extractor can be shaped on a 98 to snap over the rim but some factories shaped them that way even on military rifles.
Makes me wonder if you are using good factory ammo or reloads. Usually if there was any problem it would be +headspace rather than too tight a chamber or if that is a factory barrel or one someone added.
H08
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Offline gunnut69

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Re: 98 closing the bolt
« Reply #12 on: September 13, 2011, 07:01:39 AM »
Just have to chime in here.. The 98 and most of it's controlled round feed copies will feed single rounds if the extractor tail is depressed as the bolt is closed.. Failing to depress this spring will many times break the extractor if forced.. A difficult bolt closing is most likely a hadspace issue although it is a good idea to check the outer ends of the bolt lugs to check for interfernece from the front action screw..The right lug is the culprit.
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Offline smokehouserex

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Re: 98 closing the bolt
« Reply #13 on: September 22, 2011, 05:26:20 PM »
 
 
  Hello Shinjin:
  Just reading some mauser posted threads and came across yours. I see that your bolt would close on a empty chamber but would not with a round. I would suggest that your headspace be checked first, however the main thing that caught my attention was that you were planning to try another bolt, CAUTION, the headspace should be checked by a competent gunsmith before shooting especially with a different bolt. JMO
  safety first
  HM
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