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Green_Frog
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25-20 SS in Schuetzen
Oct 20th, 2016 at 8:48am
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Well, the Quarter Bore group spontaneously reared its head at the Chinquapin Oktoberfest last weekend, so of course that re-ignited my interest in shooting my high wall and finishing my low wall in that caliber (the 25-20 SS in my case.)  I had an e-mail from one of the participants asking about the rim thickness on various iterations of the single shot case and although there was a tickle in the back of my froggie brain I was unable to remember (or find with a site search) information about a thick rimmed case that was sometimes used.  My original high wall takes the thin rimmed cases (~.050"+/-) that came towards the end of WRA production, but somebody mentioned a thicker one at .060" or thicker.  Does anyone remember seeing info about that one?  Huh

Also, I have an old Ideal #1 push-type bullet seater in 22 Hornet of all calibers.  I'm thinking of turning a new rod and drilling a case to use it to breech seat in my low wall.  What think ye?  Undecided

All help greatly appreciated, TIA!  Cool
Froggie
  
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frnkeore
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Re: 25-20 SS in Schuetzen
Reply #1 - Oct 20th, 2016 at 10:47am
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I have no info on the thick rimmed 25/20SS but, for the BSer, I can only suggest that you try it and IF your able to BS the bullet, in one smooth stroke, it will do as well as a mechanical seater. But, if you have to make mulitple blows to get it seated, a mechanical BSer that has leverage enough to seat in one stroke, will get you more consistant scores if, the BS depth is set right.

Frank
« Last Edit: Oct 20th, 2016 at 3:50pm by frnkeore »  
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BP
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Re: 25-20 SS in Schuetzen
Reply #2 - Oct 20th, 2016 at 3:15pm
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Froggie,

My WRA brass has the ~0.050" that you mention.
But my Cartridge Conversions manual by Donnelley shows a rim thickness of 0.060".
Wasn't the 25-20 SS also available in the Maynard? What was the Maynard's headspace range?
  
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Green_Frog
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Re: 25-20 SS in Schuetzen
Reply #3 - Oct 21st, 2016 at 9:52pm
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BP wrote on Oct 20th, 2016 at 3:15pm:
Froggie,

My WRA brass has the ~0.050" that you mention.
But my Cartridge Conversions manual by Donnelley shows a rim thickness of 0.060".
Wasn't the 25-20 SS also available in the Maynard? What was the Maynard's headspace range?


There's another thread addressing this as well.  It seems that the Donnelly info may be a mistake he let slip in.  I have to admit that there is a lot more I don't know about this than what I do.  Smiley

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Re: 25-20 SS in Schuetzen
Reply #4 - Oct 21st, 2016 at 11:41pm
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Could Donnelley have encountered one of the wildcat versions made between the time of Rabbeth's introduction of the cartridge, and factory standardization for mass production?
  
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ron
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Re: 25-20 SS in Schuetzen
Reply #5 - Oct 22nd, 2016 at 6:42am
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I have new Jamison  brass the mikes at .050"

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JSB30
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Re: 25-20 SS in Schuetzen
Reply #6 - Oct 22nd, 2016 at 10:06am
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I have original cases that mike .048-.050.  Jamison I have mikes .047- .048.
  
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Fritz
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Re: 25-20 SS in Schuetzen
Reply #7 - Oct 22nd, 2016 at 2:59pm
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The last two replies raised my curiosity on the rim thickness of cases I currently have.Miking my Jamison cases ~.045-.048 and the UMC cases miked .051-.052.
  
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frnkeore
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Re: 25-20 SS in Schuetzen
Reply #8 - Oct 23rd, 2016 at 1:50am
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Just for everyones info. I measured the case capacity of Jamison 25/20SS brass, against Remington made 25/20 Win brass, and got the following results:

The water weight of my cases is as follows:

Reminton 25/20 Win (Rem made) = 19.3

Jamison 25/20SS = 19.0

That is R = 1.178 cc and SS = 1.160 cc

So, loading info between the two, should be close to interchangeable.

Frank
  
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Deadeye Bly
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Re: 25-20 SS in Schuetzen
Reply #9 - Oct 24th, 2016 at 8:33pm
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Hey Froggie, I think that was me asking about 25/20SS rim thickness. I had a Maynard barrel with .060 headspace and I asked you what the rim thickness was on the 25/20 SS. It is .050" I sold the barrel as my other 25/20 barrels were correct and I didn't want or need and odd one.
  
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Green_Frog
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Re: 25-20 SS in Schuetzen
Reply #10 - Oct 27th, 2016 at 5:30pm
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Deadeye Bly,

Actually it was another shooter who asked me about it, but now that you mention it, I recall us discussing this rim thickness situation as well.  How about Alan?  Does he have more than one variant of barrel or brass for rim thickness?

I'm going to have to do a little more work on my low wall chamber as it may turn too far into this (the engraved) frame.  I'll make sure my rim/breechblock/headspace situation is correct at that time for my existing supply of old original WW cases... I'm not likely to get any more!  Wink

BTW, be sure to keep the last Friday & Saturday in June available to shoot a Schuetzenfest with us!  Smiley

Froggie
  
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Re: 25-20 SS in Schuetzen
Reply #11 - Nov 12th, 2016 at 6:13pm
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My #2 R.E.M. Roller in 25-20 used thick rim (.060") cases and as I understand early on chambers had thick rims and later chambers were thinner. All Stevens chambers will be thin rim unless worn heavily. I have seen several Maynard barrels with the thick rims. I only have two vintage cases that are thick and will have to locate them again. Later, moodyholler
  
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