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October 29, 2011
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Hi–Wondering if anyone is making this from 45-90 Brass–I would like to purchase 40–Thanks Bill
March 31, 2009
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The conversion book says to use 45 Basic brass. The rim on the 45-90 is too thick and too small in diameter. The 45-90 head/base diameter is too small in diameter.
May 23, 2009
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Chuck said
The conversion book says to use 45 Basic brass.
Which Book are you referring to?
Sincerely,
Maverick
WACA #8783 - Checkout my Reloading Tool Survey!
https://winchestercollector.org/forum/winchester-research-surveys/winchester-reloading-tool-survey/
April 15, 2005
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In support of what Chuck has mentioned, the published case dimensions for the 40-70 WCF are indeed different than the 45-90 WCF. Specifically the rim diameter and the rim thickness.
40-70 W.C.F.
45-70 (45-90 is 2.40″)
WACA Historian & Board of Director Member #6571L
June 4, 2017
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In Clyde Williamson’s book Winchester Lever Legacy on page 167 he shows a Winchester drawing of the WCF 40-70 dated 1912. It list the rim thickness .070″ and diameter at .608″, 45-90 the same on page 88, 40-82 the same Rim thickness but diameter .610″ on page 116. I have loaded all 86 caliber cartridges from 38-56 to 45-90 with 45-70 or stretched 45-70 without messing with the rim.
I have bought cartridges made from 45 basic so I don’t know if they trimmed the rims. Williamson’s book has a RCBS drawing on page 75 that has different measurements, this is a modern drawing. His book tells the type of cases and how he did it, good reference. T/R
March 31, 2009
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Maverick said
Chuck said
The conversion book says to use 45 Basic brass.
Which Book are you referring to?
Sincerely,
Maverick
The Handloader’s Manual of Cartridges Conversion by John N. Donnelly. I have an older green one and not sure which of the other 2 is the latest one?
https://www.google.com/search?client=firefox-b-1-d&q=handloaders+manual+of+cartridge+conversions
May 23, 2009
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TR
I have Snooky’s book.
Was wondering which book Chuck was referring to?
Sincerely,
Maverick
Chuck you posted the answer before I hit send on my last post. Thanks for the info!
WACA #8783 - Checkout my Reloading Tool Survey!
https://winchestercollector.org/forum/winchester-research-surveys/winchester-reloading-tool-survey/
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