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Gordon R

Darne sliding breech

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If the lock up goes wrong it's going to be nasty when the sliding breech comes back at your face.

They look very nice though. Beretta have a gun with similar lines and a side lever.

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11 minutes ago, figgy said:

If the lock up goes wrong it's going to be nasty when the sliding breech comes back at your face.

It is hard to explain - but there are two locking mechanisms; the main one is a solid steel bar that wedges between the rear face of the standing breech at the front, and the rear face of the action base machining (at the front of the 'hand') at the back.  This is very strong and it is hard to see any means by which it could fail.  This is the 'bar' with a convex end that is seen in Matt Brown's photo (the one in the first post) in front of the opening lever.

Secondly there is a top and bottom (can't be seen) extension between the barrels that is locked.  Again this can be seen in Matt's photo as an extension at the top between the barrels.  This is locked as the opening lever closes into place.

Finally, like a bolt action, the firing pin springs are only compressed to the cocked position in the last stages of closure (and are released as the gun opens if unfired).  The sears are the two square parts seen on the sliding face of the action.

Darne guns like the one illustrated carry French 'triple proof' from St Etienne proof house.  This is a very high level of proof and I have not heard of Darne actions failing.

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Posted (edited)

12.jpg.8ff68813a38a8b72304b190b57b6eaa6.jpgThe Beretta serpentine is the gun I think looks similar where the action meets the wood.

Edited by figgy

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10 hours ago, figgy said:

12.jpg.8ff68813a38a8b72304b190b57b6eaa6.jpgThe Beretta serpentine is the gun I think looks similar where the action meets the wood.

It is a similar line; I think this Beretta was a 1 off?  Some of the 486 variants are a similar wood to metal line, but not the (less pricey) 486 parellelo.  This is a custom 486

486_by-Marc-Newsno-Woodbridge_n3_900px.jpg

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