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#13338157 - 12/06/18 Winchester 1873 action strength  
Joined: May 2009
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Fotis Online content
Campfire 'Bwana
Fotis  Online Content
Campfire 'Bwana

Joined: May 2009
Posts: 12,416
Cheyenne, Wy
Ok guys, I have a question, how can a Winchester 1873 be able to handle 35000 p s I when chambered in 357 Magnum and only 16000 when chambered in my 44-40? I mean it is the same action, so what's the difference?


By the way, this is purely an academic question, but I'm very, very curious. And I am talking about modern recently made 1873s


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#13347343 - 12/09/18 Re: Winchester 1873 action strength [Re: Fotis]  
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Frontiersman Offline
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Frontiersman  Offline
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Ultimately the toggle link is the weak point in the 60/66/73 design. Though modern metallurgy is better than the original brass and iron used in these designs

Rearward bolt thrust varies from cartridge to cartridge, depending on surface area of the cartridge to chamber contact, chamber shape, friction, bullet weight, etc. For every action, there is an equal and opposite reaction. Pressure is only one consideration. The heavier the bullet, the more rearward thrust. Some case designs cling to the chamber more readily when the case expands against the walls. Rate of powder burn and pressure curve of the burn, etc.

Most of those old cartridges are limited in pressure more to protect the original arms they were chambered in than limitations of the components available today. Remember, these were originally black powder offerings. Some of the cases are thinner as true to the original design.

Without considering the rifle, the .357 cartridge itself and the components used in it were designed to operate under higher pressure.

Last edited by Frontiersman; 12/09/18.

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#13348311 - Yesterday at 08:15 AM Re: Winchester 1873 action strength [Re: Fotis]  
Joined: May 2009
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Campfire 'Bwana
Fotis  Online Content
Campfire 'Bwana

Joined: May 2009
Posts: 12,416
Cheyenne, Wy
Thanks Makes sense


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#13349120 - Yesterday at 01:32 PM Re: Winchester 1873 action strength [Re: Fotis]  
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Rossimp Offline
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It is all about advanced metallurgy with replicas made today (both lever rifles and SA revolvers). The 44-40 was introduced in 1873. It was a popular duel carry cartridge as both rifles and revolvers were chambered in it. Pressures in the 44-40 at 16,000 psi were most likely held for many of the revolvers used in the day. Having a rifle in the same cartridge as your revolver was a real nice attribute and the 44-40 was extremely popular for that use. Even so, I'm guessing the rifles of the day could of handled a bit more pressure than the revolvers of the day.


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