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RJ-35-40
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Re: 1885 low-wall shooter
Reply #15 - Jul 18th, 2022 at 6:41pm
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ONEisenough..

Thanks for the link.
By chance do you know if:

A: The low wall pressure curve is for older original actions..? or the newer repros like the Miracu or the Uberti..?, 

For the most part, Are the repro's stronger?

B: The 32-40C and 38-55C 
What does the "C" Stand for..?

Thanks in advance for the opinions...

RJ

1isenough wrote on Jul 10th, 2022 at 3:14pm:
Colt45sa,

I attached a copy of the DeHaas bolt thrust curve showing safe cartridges for the low wall action.  Given the short side wall, it has its limits.  As you can see, the 357 Mag is pretty stiff for this action.  The recommendations for 38 special in earlier posts are safe in terms of thrust and cartridge availability, but I like the 218 Bee, 25-20WCF and 32-20WCF better, in terms of performance for a rifle.  If you re-load, you can keep your eyes peeled on GunBroker for 32-20 cartridges (you can make 25-20 and 218 Bee from 32-20).  Also, if you go with a liner (my preference) you should consider John Taylor, a participant in this forum.  Good luck - I love my low wall (has several barrels, including the above-mentioned as well as 44-40).

  
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Chuckster
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Re: 1885 low-wall shooter
Reply #16 - Jul 19th, 2022 at 12:06am
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Because I made the chart, will try to answer.
The de Haas reference is only because he built one in .357Mag in his "Single Shot Rifles and Actions". Strongest cartridge for an original low-wall that I have seen in print.
Know of some above the curve (32-40) that have battered or cracked. Don't know how the de Haas rifle held up.

Modern low-walls generally are a different design and stronger than original low-wall's. Chart is for original low-wall's.

The "C" after the cartridge indicates Copper Units of Pressure (CUP) because transducer pressure measurements were not available for those older cartridges.
Hope this answers.
Chuck
  
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RJ-35-40
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Re: 1885 low-wall shooter
Reply #17 - Jul 19th, 2022 at 4:57am
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Chuck,

Thanks so much..
And yes that helps.

RJ
  
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