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M50 "ontos", Revolver Feed Design?


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#21 GARGEAN

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Posted 16 August 2017 - 0659 AM


  Callahan: I know what you're thinking: "Did he fire six shots or only five?" Well, to tell you the truth, in all this excitement, I've kinda lost track myself. But being this is a .44 Magnum, the most powerful handgun in the world, and would blow my thumb clean off, you've got to ask yourself one question: 'Do I feel lucky?' Well, do ya, punk?   [The thief gives up trying to retrieve his shotgun; Callahan picks it up and starts to walk away.] Thief: Hey! [Callahan turns around] I gots to know!   [Callahan aims his revolver and pulls the trigger, but the gun just clicks on an empty chamber, and he grins, laughs, and walks away.]   Thief: Son of a bitch!
But-but, .454 casull and .500 s&w! How old this citate is?

#22 GregShaw

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Posted 16 August 2017 - 0932 AM

Dirty Harry, 1971. .454 was still a wildcat, and the Linebaugh and S&W wristbreakers were well in the future. 



#23 Panzermann

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Posted 16 August 2017 - 1617 PM

pfeifer-zeliska-1.jpg

 

accept no substitute!

 

 

 

 

But back to revolving recoilless rilfes.



#24 shep854

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Posted 16 August 2017 - 1853 PM

Not just yet... :P

'Flame cutting', where the burning gas escaping a revolver's cylinder gap and gouging a notch in the frame topstrap, eventually weakening the frame, was a problem with early magnums, until the frame steel was reformulated to resist the effect.  If it can cut steel...



#25 Panzermann

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Posted 17 August 2017 - 0605 AM

Not just yet... :P

'Flame cutting', where the burning gas escaping a revolver's cylinder gap and gouging a notch in the frame topstrap, eventually weakening the frame, was a problem with early magnums, until the frame steel was reformulated to resist the effect.  If it can cut steel...

 

Now imagine the effect of a wheelgun recoilless rifle...



#26 shep854

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Posted 17 August 2017 - 0814 AM

No argument from me, Panzermann! :)  That's why I was wondering about how to seal the cylinder gap.



#27 KV7

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Posted 17 August 2017 - 1445 PM

No argument from me, Panzermann! :)  That's why I was wondering about how to seal the cylinder gap.

You could even fully enclose the rotating magazine in a static drum, semi-fixed to the barrel at the front, and with a rear hatch to reload the thing and some suitable gas venting.


Edited by KV7, 17 August 2017 - 1446 PM.


#28 Chris Werb

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Posted 17 August 2017 - 1728 PM

Here's a singularly bad idea for a firearm...

colt_1855.jpg



#29 shep854

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Posted 17 August 2017 - 1935 PM

The biggest danger from those revolving rifles wasn't flash from the cylinder gap, especially with low-power black powder, but the danger of flash-over from the charge being fired (flashover) triggering the other charges in a rifle-destroying blast.


Edited by shep854, 17 August 2017 - 1936 PM.


#30 bojan

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Posted 17 August 2017 - 2105 PM

The biggest danger from those revolving rifles wasn't flash from the cylinder gap, especially with low-power black powder, but the danger of flash-over from the charge being fired (flashover) triggering the other charges in a rifle-destroying blast.

Yep, good leather gloves was enough to protect vs cylinder gap blast with most BP revolving rifles.

 

Cartridge ones were pretty decent, except by that time better repeating weapons already appeared so revolving rifles went stayed mostly historical curiosa.

 

One of the last made* was a Pieper revolving carbine that used Nagant like gas seal and made a handy 9-shot carbine. It was used by Mexican rural police. Unlike revolver which used 8x37R, almost identical to a Nagant load carbine used heavier 8x50R ammo, giving it's 6.9g bullet muzzle velocity of about 450 m/s, reasonably respectable for a period,

tumblr_npzlw5KMMf1sfltapo5_1280.jpg

*There are few shotguns today that use that principle, Russian MTs-255 and US Crye SIX12, both of which use gas seal to solve an issue of barrel gap.


Edited by bojan, 17 August 2017 - 2105 PM.


#31 Chris Werb

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Posted 18 August 2017 - 1909 PM

You would have to hold the BP revolving rifle in a singularly strange way for a good pair of leather gloves to suffice as protection - unless they were leather opera gloves that is :)



#32 bojan

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Posted 18 August 2017 - 2014 PM

Half lower arm length ones or even shorter ones, like period US cavalry ones. See on Pieper where you are supposed to hold it, cylinder gap hits you somewhat higher than a whist.

Cylinder gap with BP revolvers is not that much an issue as with modern magnums - even Gasser, which fired relatively high power cartridge does practically no damage to heavy denim so any kind of sturdy clothing would suffice.

There were revolvers that solved cylinder gap issue with a shield however:

Cherubin 1880 (bullpup revolver, striker fired!):

tumblr_ni6eltP4l31sfltapo1_1280.jpg

Decker (only right side was shielded, so lefties should beware):

H1193-L100633570.jpg

tumblr_ni6evnOjrQ1sfltapo1_500.jpg


Edited by bojan, 18 August 2017 - 2019 PM.


#33 rmgill

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Posted 24 August 2017 - 0014 AM






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