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Hi does anyone know the twist rate for a 1903 model Winchester 1892 24" in 38-40.

I have come across conflicting comments from 1:24 - 1:30 - 1:36.

Thanks
 

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I have just been informed by a friend, with a little Winchester book, that the rifle twist for a model 1892 chambered in 38-40 was 1:30 from 1892 until 1905.

I have been shooting it with a H4227 load. If its pre 1905, I wonder if I should be using 3F powder?
 

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I forgot to add that the twist can be checked by marking a cleaning rod with a tight patch on a jag and pulling it through the bore. A half turn in 15" for example would be a 1 in 30".
 

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For a model 1892 in 32-20 the twist rate is 1:20.........I called Winchester and the Cody Museum and both told me that all 1892's in 32-20 had a 1:20 twist

Steve
 

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Hi does anyone know the twist rate for a 1903 model Winchester 1892 24" in 38-40.

I have come across conflicting comments from 1:24 - 1:30 - 1:36.

Thanks
This applies to the Model 1892 only:

From the start of production to about serial 390,000 (early 1906) the twist in all rifle barrels was 1:30" with the grooves 1/4 wider than the lands.

From 390,000 to 675,000 (late 1912) the rifling twist in all rifle barrels was 1:24" with the grooves 3/4 wider than the lands.

From 675,000 to end of production, the twist rate in all rifle barrels was 1:36" with the grooves 1/4 wider than the lands.*

Carbine barrels in .44-40 and. 38-40 followed the same pattern as the rifle barrels.

Throughout production .25-20 carbine barrels had a twist of 1:20" and and the grooves were twice as wide as the lands.

Throughout production .32-20 carbine barrels used a 1:24" twist and the grooves were 1/4 wider than the lands.

*I have no information on the .218 Bee, but 1:36" is way too slow and I suspect they used the standard 1:16" twist.

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So for a Model 1892 .38-40 rifle (or carbine) made in 1903, it should have 1:30 twist rifling with the grooves only slightly wider than the lands.
 

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It's a superb chart and accurate for the .25-20 and .32-20 carbines - but for the 25-20 and 32-20 rifles it should read:

25-20 WCF - 1 in 30".....................Win 1892 (under SN390000)
25-20 WCF - 1 in 24".....................Win 1892 (SN390000 to SN675000)
25-20 WCF - 1 in 36"..................….Win 1892 (SN675000 to end)

32-20 WCF - 1 in 30".....................Win 1892 (under SN390000)
32-20 WCF - 1 in 24".....................Win 1892 (SN390000 to SN675000)
32-20 WCF - 1 in 36"............………...Win 1892 (SN675000 to end)

And for .44-40 winchester Model 1892s it should read like it does for the 38-40:

44-40 WCF - 1 in 30".....................Win 1892 (under SN390000)
44-40 WCF - 1 in 24".....................Win 1892 (SN390000 to SN675000)
44-40 WCF - 1 in 36"............………...Win 1892 (SN675000 to end)

(Based on Arthur Pirkle's research and books.)
 

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Ideal and Lyman handbooks from No.1 through No.41 (covering the period from 1891 to 1957) the following rates of twist for Winchester produced rifles were consistently reported:
.25-20 WCF - 1:14
.32-20 WCF - 1:20
.38-40 WCF - 1:36
.44-40 WCF - 1:36

Perhaps this only adds to the confusion, but it is the information I was able to find.
 

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I'm going to build a 32-20 on a Martini action and I'm trying to find what twist rate I need. I have seen everything from 1:16" to 1:30". I own a Winchester 1892 in 32 WCF and I check the twist and found it to be 1:14.5". Does anybody have any ideas on why so many different numbers?
 

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Hi does anyone know the twist rate for a 1903 model Winchester 1892 24" in 38-40.

I have come across conflicting comments from 1:24 - 1:30 - 1:36.

Thanks
For the range of bullet weights available in this caliber, and the velocities this cartridge is limited to, I see no reason to wonder why the question. Whatever the rate of twist is should handle whatever weight bullet you shoot through it. And **** this is a old thread.:D;)
 
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