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Very Hot Topic (More than 25 Replies) Making more .32 long and extra long rimfire cases (Read 2774 times)
ndnchf
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Re: Making more .32 long and extra long rimfire cases
Reply #15 - Mar 30th, 2023 at 12:22pm
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Here is a close up of a fired acorn blank and the .025" deep x 3/16" wide firing pin relief cut.
  
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uscra112
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Re: Making more .32 long and extra long rimfire cases
Reply #16 - Mar 30th, 2023 at 12:52pm
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Photo of the experimental centered acorn blank.  Much of the pin strike did fall on the case rim, but by beveling the firing pin nose this can be reduced.  Increasing the pin diameter in combination  with beveling even better. 

The obvious advantage for the shooter is that the rounds need not be oriented when loading.   

One swallow does not make a summer.  In between doctors I will make up a few more of these and try them in my Favorite as well as the #4.   
  
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ndnchf
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Re: Making more .32 long and extra long rimfire cases
Reply #17 - Mar 30th, 2023 at 1:04pm
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uscra112 wrote on Mar 30th, 2023 at 12:52pm:
Photo of the experimental centered acorn blank.  Much of the pin strike did fall on the case rim, but by beveling the firing pin nose this can be reduced.  Increasing the pin diameter in combination  with beveling even better. 

The obvious advantage for the shooter is that the rounds need not be oriented when loading.  

One swallow does not make a summer.  In between doctors I will make up a few more of these and try them in my Favorite as well as the #4.  



That would be a great boon for repeating rifles like the M1892 Marlin.
  
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uscra112
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Re: Making more .32 long and extra long rimfire cases
Reply #18 - Mar 30th, 2023 at 10:39pm
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Well, my Favorite's pin hits too far from center, and wouldn't dent the 6mm blank at all, even if I relieved the rim.  To make this work I'd have to make a pin with an offset of ~.060.  Since I already have a spare breechblock converted to centerfire, I guess I won't.   

Now I'm wondering.....did Remington place their pin so that it would work for all three rimfires - .22, .25., and .32?  Would have been clever if they did.  Do parts list show different breechblocks depending on caliber?
  
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Re: Making more .32 long and extra long rimfire cases
Reply #19 - Mar 31st, 2023 at 5:57am
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uscra112 wrote on Mar 30th, 2023 at 10:39pm:
Now I'm wondering.....did Remington place their pin so that it would work for all three rimfires - .22, .25., and .32?  Would have been clever if they did.  Do parts list show different breechblocks depending on caliber?


An interesting question...  I have #2 rolling blocks in all their rimfire chamberings. Using a steel rule I checked them. .22, .25 and .32 all have the same firing pin position. .38 and .44 are the same, but different from the smaller chamberings.

This reminded me about the time I made a single reloadable .38 rimfire case. Because of the deep extractor groove ahead of the rim on the parent .38 special case I used, I couldn't offset the .22 blank hole without breaking through the groove. So I centered the .22 blank hole, then swapped in a .32 rimfire block and it worked just fine.
  
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uscra112
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Re: Making more .32 long and extra long rimfire cases
Reply #20 - Mar 31st, 2023 at 6:20am
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Now, why didn't Stevens do that?   

One in the win column for Remington.
  
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Re: Making more .32 long and extra long rimfire cases
Reply #21 - Mar 31st, 2023 at 7:35am
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That’s pretty much what I was wondering when I suggested that you could put a .22 liner in your .32 rimfire without changing the breech block. To my amazement it seems that the #2 breech block would work for .22, .25, and .32 rimfire.
  
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Re: Making more .32 long and extra long rimfire cases
Reply #22 - Mar 31st, 2023 at 7:43am
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uscra112 wrote on Mar 29th, 2023 at 12:03pm:
Do your acorn blanks stay in place with the hole reamed .224"?  I reamed a couple of my .25 Stevens conversions to .224, and even the Umarex blanks fall out if I so much as look at them crosseyed.


These are the acorn blanks I use. They measure nearly .027", which makes them a nice tight fit in the .024" reamed hole. I order them online.
  
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Re: Making more .32 long and extra long rimfire cases
Reply #23 - Mar 31st, 2023 at 7:48am
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Because the acorns are a tight press fit, I made a flat top seating anvil that goes in place of a shell holder. The case is run into a loose fitting die that stops it on the rim, seating the acorn.
  
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uscra112
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Re: Making more .32 long and extra long rimfire cases
Reply #24 - Mar 31st, 2023 at 11:01am
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The ones I'm now getting from Gun Dog Supply are either Walther or Umarex brand.  They both say Germany, but that may not mean much.  One of the Walther-branded ones mikes about .2255, and looks like brass.  One from an Umarex-branded package mikes .2275, about like yours. 

The Walther-branded ones I used to get are either copper or copper-washed, and they mike .2230".   It was based on those that I designed my pocket-reamer.  I'm saving those for the .25 adaptors which have such fragile rims. Once they're gone I'll have to do a second reaming operation to bring them up to an easy fit for the ones we get now.  
   
They obviously don't care much about the O.D., which I suppose makes sense since they are intended to fit into crude noisemaker pistols.
  
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uscra112
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Re: Making more .32 long and extra long rimfire cases
Reply #25 - Apr 2nd, 2023 at 12:11am
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Had occasion to clean up a pre-1896 .32 rimfire Favorite I have, and of course tried the central-acorn adaptor in it.  And it fires just fine.  Firing pin placement about like the #4 Remington.  Go figure.   Sadly the barrel of this early Favorite is badly pitted, so it won't get used unless I put a liner in it.
  
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Re: Making more .32 long and extra long rimfire cases
Reply #26 - Apr 2nd, 2023 at 6:07am
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uscra112 wrote on Apr 2nd, 2023 at 12:11am:
Had occasion to clean up a pre-1896 .32 rimfire Favorite I have, and of course tried the central-acorn adaptor in it.  And it fires just fine.  Firing pin placement about like the #4 Remington.  Go figure.   Sadly the barrel of this early Favorite is badly pitted, so it won't get used unless I put a liner in it.   


That's good back pocket information. I don't own a favorite. But who knows, one might reach out and grab me at a gunshow  Grin
  
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Re: Making more .32 long and extra long rimfire cases
Reply #27 - Apr 2nd, 2023 at 6:29am
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I'm liking the Remington more and more as I handle it. Machining quality definitely better than the Stevens.  But the Favorite has the advantage of being able to press new blanks into place just by closing the action.  Handy when reloading in the field.   Wink
  
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Re: Making more .32 long and extra long rimfire cases
Reply #28 - Apr 2nd, 2023 at 6:45am
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I've found Remington's quality, tolerances and consistency to be really good. In partocular when swapping breech blocks around, I've never had a problem with fitting or headspace.
  
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Re: Making more .32 long and extra long rimfire cases
Reply #29 - Apr 2nd, 2023 at 7:23am
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In collecting so many Stevenses, as I have, I've noticed some truth in Allyn Tedmon's opinion that Favorite quality fell off after Joshua retired, and the company fell into the hands of a $money-man$ - Irving Page.
  
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