doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Parker value question

I suspect the size of a shotgun frame behind the fences has very little to do with a gun going off the face. And for some reason, my Physics professor never taught us to measure the mass of an object with machined internal voids by using something like a tape measure or caliper. Total mass of a shotgun frame could be quite substantial, yet still yield upon firing if it had poor design in critical areas.

Simply measuring the mass of an action, or the width behind the fences totally neglects very important factors like cross sectional area at the point of greatest stress, and/or the alloy and heat treatment of the steel.

We had a good discussion about this awhile back in one of the Ithaca Flues frame cracking Threads, along with an FEA analysis that Boxall & Edminston engineers did to illustrate the point of greatest stress upon firing with one of their frames. Hint: It wasn't behind the fences:

https://www.doublegunshop.com/forum...;Words=Boxall&Search=true#Post636161

Geoff, I made the statement initially and made the point I, I, was trying to make. My point, my example. If I look foolish by measuring where I did, so be it.

But . . . . if the breech balls are closer together that means there is less metal between them. And, the breech ends of the barrels are closer together, creating a slimmer breech overall

If you want to make a point by measuring differently, do so. I've got no problem with comparison measuring any part of a gun you'd like.

If someone could post a photo for me I can show how a tiny action can be strengthened without adding too much weight or bulk.

Thank you.

Email it to me, I’ll get it up on the board for you.

tedjs@usfamily.net

Best,
Ted

OK, I just measured a Ithaca N.I.D, Fox, Parker, Winchester M-24, and a Browning B-SS, All guns are 12ga. The Ithaca is the Smallest, Next is the B-SS,
The Fox and Parker about the same, and low & behold, the WIN-24 HAS A HUGE FRAME COMPARED TO THE OTHERS. The Parker was a A-1 Special Trojan
With #2 Frame. The B-SS HAS THE 2ND Smallest frame size. And some Guys say they are huge, over built, ''PADDLES'', Wow, I sure don't See That.
What I do SEE IS A GUN THAT MUST BE BUILT WITH THE ''TOUGHEST STEEL MADE'', Maybe even stronger than Winchester Proof Steel. May be some of the
Steel Masters will chime in on the strength of Browning Special Steels !

Dirty Harry

Ted,
Photo sent. Thank you.

The point of what I wrote earlier about not measuring around the fences was more about the overall size of the action - there are 12 bores built on 20 gauge frames, ans "1620s" are relatively common.

Toss in round bodies, lightweight English 12s, and actions like the Ruger Gold Label, and while the measurement around the fences will be within a predicable range (two 12 bore chambers and the sides of those chambers) we'll get a much better idea of the mass of the action by measuring right behind the fences.

There's lots of other variables, but it's a better starting place than measuring around the fences.

zzzzzzzzzz

PM sent, Richard.

Best,
Ted

Richards pictures:




Best,
Ted