Can anyone help me with a suggested source for 25-20 cases? I've been searching for weeks on line, and found only one place that had them in stock, and when I ordered a bag, it turned out they really didn't have any either.

I haven’t seen 25/20 brass in a very long time, but sometimes you can still find 32/20 though that is becoming tougher too. You can form 25/20 brass from 32/20 quite easily if you have a set of 25/20 dies. That’s probably your best hope these days unless you find someone who has a stash in their basement somewhere.

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25-20 Winchester Ammo for sale

Thanks,Wyo! I can do that. I have two sources for 32-20 and already have a bunch, since I have several revolvers in that chambering. I just want to build up and maintain my stock of 25-20 to feed my dear old Savage Model 23.

Optics planet has it listed and is allowing backorders to be made. It might be a good thing to do, put yourself on the list.

I'm not sure if the price is acceptable to you, it's $31.99/50 cases.
Winchester .25-20 Winchester Unprimed Rifle Brass | Free Shipping over $49!

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SWCA #3437

218 Bee brass necked up works better than 32-20 brass necked down! Remember Dry Lube inside the neck!

Ivan

Case forming can be a bit tricky as the brass is thin and easily damaged. You can’t just run a 32-20 case into a 25-20 size die and get good results. Here’s a tutorial that works well with very little loss if followed:
Case Forming .25-20 from .32-20 brass. Pic Heavy

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I put a WTB add on 24hourcampfire.com and got some for my Winchester M1892.