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.22-5-40
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Ideal 311287
Mar 14th, 2024 at 3:56pm
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I came across this one in the Lyman Handbook Of Cast bulets. Early plain base marked 7th N.Y. .30-40.  Not sure if Dr. Hudson designed this or not.  Has anyone came across this mould?
  
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Tom_Trevor assra life no.71
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Re: Ideal 311287
Reply #1 - Mar 14th, 2024 at 5:28pm
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I had one for some years but sold it. If you look at 311278 311279 311280 and 311287. Can you tell the difference?
  
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Schutzenbob
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Re: Ideal 311287
Reply #2 - Mar 14th, 2024 at 7:53pm
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This is a couple of pages from the Lyman - Ideal handbook. I think they all weigh about 198 grains.
  
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Tom_Trevor assra life no.71
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Re: Ideal 311287
Reply #3 - Mar 14th, 2024 at 9:10pm
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Bob, That is the handbook I looked in and perhaps the nose diameter might vary or one may be two diameter as are the 23-40 versions of the Hudson. All would seem to be off the Hudson design.
  
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gnoahhh
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Re: Ideal 311287
Reply #4 - Mar 15th, 2024 at 9:36am
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It would appear that the chief difference between them is the height of the base band.
  
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marlinguy
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Re: Ideal 311287
Reply #5 - Mar 15th, 2024 at 11:06am
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If you look at the 311280 you'll notice the first two bands are the same OD, but forward band is reduced. The 311287 is a stepped band from base to final forward bands.
  
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.22-5-40
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Re: Ideal 311287
Reply #6 - Mar 15th, 2024 at 3:40pm
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Ideal 311256 p.b., "An early design for the .30-40 with front band measuring .316 to take up the space between the case and the bore and to seal off the gases".
#311259 has a whopping 1st. band dia. of .327"!, #311268 p.b. has 1st. band .219", ballance .311.  I am guessing these are pre gas-check moulds.
  
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beltfed
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Re: Ideal 311287
Reply #7 - Mar 17th, 2024 at 5:13pm
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that 311287 is probably more like in the 170s weight range
Proportionality is about like the known 311291, nom 170 gr
beltfed/arnie
  
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Cbashooter
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Re: Ideal 311287
Reply #8 - Mar 17th, 2024 at 6:56pm
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I have the 311277,311278 and 311280 and can dig for samples if needed.
  
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