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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

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.224 member

Reged: 07/08/09
Posts: 4
Loc: Essex, England
Certus rifle 450/400
      #313635 - 07/03/18 10:37 PM

Hello everyone,
I have been a member of the forum for some time; sadly not a very active one. Until now that is.
I bought a rifle some years ago which has been languishing awaiting revival. It is a big bore Certus. I include some pictures of things that baffle me.
The questions I am trying to answer are follows:
a) The safety does not work and someone seems to have switched the lever from one side of the bolt to another. Is this a classic case of amateur gunsmithing or could there be another reason?
b) The barrel has been shortened - again amateur work or has anyone seen another rifle with a shortened barrel.
c) Is there any literature on these?
d) I live in the UK. Is there anyone who can restore such gun? I think it needs a new barrel - the bore is clean but rifling looks weaker that I would expect. Safety needs sorting.
e) How does one get the bolt out?
f) The trigger guard is screwed into the stock with two (not original looking) wood screws. Is it just the screws that are non original or is the method of attachment also dubious.
It is a fascinating gun. If anyone has one or has any information they could share, that would be great.
Thank you

Edited by NitroX (15/05/18 10:38 PM)

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.416 member

Reged: 04/11/07
Posts: 2895
Loc: Colorado
Re: Certus rifle 450/400 [Re: 35Whelen]
      #313645 - 08/03/18 03:22 AM

Looks like the safety lever is on the wrong side and the arm should be much longer to engage the two detents on the side of the bolt.
Iíve never played around with one of these but the first thing I would try to pull the bolt is to hold the trigger down and see if it simply pulls out.

He who lives in the past is doomed to enjoy it.

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.400 member

Reged: 07/12/11
Posts: 1571
Loc: Nth QLD Australia
Re: Certus rifle 450/400 [Re: Huvius]
      #313651 - 08/03/18 07:05 AM

PM a young fellow with the moniker of ASH he actually has one of these rare old birds.
I would reload first & see if the barrel was completely washed out, some rifling styles look rather shallow; but more than enough to stabilize the bullet!
You have a fantastic old girl there, a bit of TLC & she'll be up & going.
It would be best to slug your bore before buying projectiles as this calibre existed in a few guises.
Try & get Graeme Wright's Shooting the British Double rifle he has some good loads for it there for it.

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.300 member

Reged: 12/05/08
Posts: 234
Loc: Australia
Re: Certus rifle 450/400 *DELETED* [Re: 93x64mm]
      #315585 - 23/04/18 10:41 PM

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.400 member

Reged: 10/05/11
Posts: 1487
Loc: QLd, Australia
Re: Certus rifle 450/400 [Re: ChrisPer]
      #316229 - 09/05/18 05:18 PM

Huvius is right - trigger in to pull the bolt out.

Canít see the pics anymore, came too late!

Safety on mine doesnít work either and is also backwards (ha!), never had it apart to try and fix. Probably should.

The rifling on mine isnít super deep either. Most of these guns didnít seem to get a huge workout so maybe thatís just how they are? Iíve never seen another to compare to though.


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.333 member

Reged: 06/12/13
Posts: 278
Loc: Canada
Re: Certus rifle 450/400 [Re: Ash]
      #323099 - 08/01/19 10:06 AM

I see one for sale right now in Vancouver, B.C.

Edited by rpeck (08/01/19 10:15 AM)

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