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Older Doc #50439 07/29/07 07:48 PM
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Originally Posted By: Older Doc
PeteM
Thanks for showing our Boswell 26" Pigeon Gun. David T and I along with Chris Batha have discussed this gun ad Nauseum. It is a rare configuration. As for the self mutilation aspect of Side Clips, most of it is incosequential unless one is prone to close his gun at waist level.




Pete

Salopian #50457 07/29/07 10:48 PM
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Sal, to continue and you have way more exposure to high grade shotguns then I do, have you or anyone else seen side clips on a double that locks up using a rib extension?? Greeners and Germans with their massive cross bolts, Westley Richards with their doll heads???
All the best

treblig1958 #50471 07/30/07 06:21 AM
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My Merkel has both a Greener crossbolt and side clips.

Brent


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treblig1958 #50479 07/30/07 08:07 AM
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" --- inherent weakness of Purdey's double underbite that most of the English and European makers have adopted." Please elaborate on this weakness.

BrentD, Prof #50483 07/30/07 08:44 AM
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Brent, my "lowly" Simsons too:



And they are as tight as was stated above in a bovine reference.
Even the one with claw mounts & scope that was used for slugs by previous owner:



JC(AL)


"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin
HomelessjOe #50493 07/30/07 09:36 AM
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Side Clips on a Pair of c 1936 Purdey 20bores.2.3/4" Proof.. They gave Harry Kell a little more surface to Carve his Large Scroll on!!! Crossedchisles


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Rocket, just the inherent weakness of the underbolt, whether its single or double. The strongest bolting system has to be the bolting that is the furthest point from the hinge. Granted Purdey's workmanship and their fit and finish makes their double underbolting extremely strong, however not as strong as a bolt through a rib extension.
All the best

treblig1958 #50517 07/30/07 03:05 PM
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And of course, J. P. Sauer & Son.

jack

rabbit #50519 07/30/07 03:24 PM
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t1958 - don't agree with you on a few points. The tendancy for the action to open is due to a torque around the hinge pin created by the backthrust of the fired shell being above the center of the hinge pin. The resistance to opening would have to be a torque in the opposite direction. It would be composed of the force applied to the locking mechanism times the distance from the hinge centerline to the center of the mechanism contact area. The longer the distance, proportionally the less force applied. However, strength in this case is ability to resist shear force applied to the locking parts. Shear stress on the lock parts would be opening force divided by shear area. Strength of the action, then, would depend on the relation of the shear stress to the strength of the alloy of the locking parts. A locking mechanism located a long ways from the hinge pin might be either stronger or weaker than a Purdey bolt depending on the size of the lock parts and the strength of the alloy used.

Rocketman #50520 07/30/07 03:48 PM
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treblig1958 you ever saw a Purdey that was loose ?

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