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jhm
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Re: Low walls
Apr 8th, 2018 at 10:10pm
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Nice rifles.... How does the Colt shoot?


JMH
  
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rkba2nd
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Re: Low walls
Reply #1 - Apr 8th, 2018 at 11:40pm
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Possibly set the barrel back far enough to eliminate the rear dovetail?
  
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moodyholler
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Re: Low walls
Reply #2 - Apr 9th, 2018 at 10:56am
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Joe poor choice of words perhaps, however, it has no rear sight dovetail. moodyholler
  
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Redsetter
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Re: Low walls
Reply #3 - Apr 9th, 2018 at 11:13am
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moodyholler wrote on Apr 9th, 2018 at 10:56am:
Joe poor choice of words perhaps, however, it has no rear sight dovetail. moodyholler


Both omission of the dovetail, & the 32" brl. on the other one, were extremely rare options on any standard grade LW, if those are the original brls.
  
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Re: Low walls
Reply #4 - Apr 9th, 2018 at 11:23am
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Both are original barrels. 32” letters as a 25-20 ss. Has now been rebooted to 45 colt. Second gun has not been lettered yet. moodyholler
  
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Re: Low walls
Reply #5 - Apr 9th, 2018 at 12:57pm
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moodyholler - Glad to hear the barrel was not set back. As redsetter said, rare to see a barrel ordered without rear sight dovetail.
  
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Chuck V
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Re: Low walls
Reply #6 - Apr 10th, 2018 at 12:35pm
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James-
Both are great examples of yesterdays rifles-  high quality at modest cost, so rare today-
I would have thought a #1 barrel in 45Colt would leave very thin barrel walls, but you've proved me wrong--
Thanks for sharing these beauties!!!
  
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marlinguy
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Re: Low walls
Reply #7 - Apr 10th, 2018 at 4:14pm
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Chuck V wrote on Apr 10th, 2018 at 12:35pm:

I would have thought a #1 barrel in 45Colt would leave very thin barrel walls, but you've proved me wrong--


The #1 weight barrel is .94 at the breech end and .70" at the muzzle. So with a case diameter of .478" it leaves a pretty thin wall indeed, but not bad at the chamber. The thin area is the muzzle where the .452" bore and .70" barrel leaves .243" left, and that's less than 1/8" per side on the barrel thickness. .1215" thick.
  
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Schuetzenmiester
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Re: Low walls
Reply #8 - Apr 10th, 2018 at 7:47pm
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Never really thought about it before.  Is there a standard minimum?  Less than 1/8" sounds spooky  Undecided
  
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Re: Low walls
Reply #9 - Apr 10th, 2018 at 8:19pm
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I'd have to measure, but it sounds pretty close to the amount of metal that remained at the muzzle on the 1886 Extra Light Weight barrels.
  
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frnkeore
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Re: Low walls
Reply #10 - Apr 11th, 2018 at 3:07am
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The chamber is the weakest and highest pressure area, especially at the extractor cut. The LW shank size is .825. There is a old "rule of thumb" that I always use, it's 1/2 the shank diameter for the largest case head. Using that, I wouldn't go larger than .410 - .415. 

In the case of a case head of .415, that would leave a wall thickness of ~.184, at the root of the thread.
The 45 Colt, would only have about .130 wall thickness.

You would have to be VERY careful, drilling the scope block holes.

I just did some calculations on the pre-64 model 70 Win, using the 300 H&H case. From the root of the thread, to the belted case head is ~.190, for a much higher pressure cartridge.

Frank
« Last Edit: Apr 11th, 2018 at 3:17am by frnkeore »  
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