25-20 SS Loading Data

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25-20 SS Loading Data

Postby wislnwings » Thu Feb 21, 2008 5:19 pm

Anyone have any idea where I can find loading data for the 25-20 SS?
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Postby Andy M » Fri Feb 22, 2008 6:47 am

I might need educated on this - but what is a 25-20 SS?
I assume it is different than the 25-20 WCF?

just trying to understand...
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Postby wislnwings » Fri Feb 22, 2008 8:10 am

Yes, it is different. It is for single shots and came out shortly before the Winchester version (which has a shorter length).
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Postby feather » Fri Feb 22, 2008 12:50 pm

wislnwings,

Cartridges of the World lists several loads for the 25-20 SS cartridge. The two smokeless powders listed there are 4227 and 2400. In reviewing some of my old Ideal and Belding & Mull reloading manuals, those are the two smokeless powders that they recommend which are still available.

If you don't have access to the book, the loads are:

60 grain jacketed soft point with 8.0 grains of 2400 for 1535 fps.
65 grain cast bullet (Lyman 257420) with 8.0 gr. of 2400 for 1620 fps.
86 grain jacketed soft point with 8.5 grains of 4227 for 1400 fps (nearly duplicates the factory load of 1410 fps).

Since this information is from old manuals and I have never loaded for this cartridge, please use caution when working with these loads. You might want to start a half grain lower and work up to them.

If you want to load with black powder, I'd use 20 grains of FFFg with an 86 grain cast bullet.

I hope this helps.

feather
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Postby feather » Fri Feb 22, 2008 12:51 pm

wislnwings,

Cartridges of the World lists several loads for the 25-20 SS cartridge. The two smokeless powders listed there are 4227 and 2400. In reviewing some of my old Ideal and Belding & Mull reloading manuals, those are the two smokeless powders that they recommend which are still available.

If you don't have access to the book, the loads are:

60 grain jacketed soft point with 8.0 grains of 2400 for 1535 fps.
65 grain cast bullet (Lyman 257420) with 8.0 gr. of 2400 for 1620 fps.
86 grain jacketed soft point with 8.5 grains of 4227 for 1400 fps (nearly duplicates the factory load of 1410 fps).

Since this information is from old manuals and I have never loaded for this cartridge, please use caution when working with these loads. You might want to start a half grain lower and work up to them.

If you want to load with black powder, I'd use 20 grains of FFFg with an 86 grain cast bullet.

I hope this helps.

feather
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Postby g.pennell » Fri Feb 22, 2008 7:41 pm

This cartridge is currently being discussed over on the ASSRA board as well. Pretty popular with some of those guys, so you might want to surf on over there and check it out. (assra.com)

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Postby wislnwings » Fri Feb 22, 2008 11:30 pm

Thanks for the info guys. It is greatly appreciated.
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