.38 Special Cowboy Load in .357 Brass Question/Concern

[OkieJoe72]

I don't see any listings for N320. My cowboy loads are Trail Boss, Unique and Bullseye.
I didn't care for the Bullseye. Herco, 4227 and 2400 work well.

To use your .357 cases, up your powder charge .3-.4 gr. Or seat y our bullet to .357 length, using .38 brass.

I have a good stash of Trail Boss. I would sell or trade. I am hoping to make the Wed lunch. Will depend on how Wif's surgery goes, on Monday

One thing that I read was to up your powder by the 38 special load times 1.1. Gonna play around with increasing the powder charge a bit. I’d definitely be interested in buying some trail boss. I’m planning on going to the Wednesday lunch also. I got busy last week and didn’t make it. I hope and pray that your wife’s surgery goes smoothly! I’ll touch base with you Wednesday morning about buying the powder if you can make it. Thank you!

 

[OkieJoe72]

Do you intend to use these for Cowboy Action Shooting, or just looking for a mild load?

Main reason is for CAS

 

[OkieJoe72]

Accurate Arms loading guide #1
View attachment 257162

Hodgdon #26

View attachment 257164

There is a data sheet out there that has powders burn rate listed fastest to slowest.

And there is instructions for using that list and the known load data for a substitute powder!

I have it printed out, but its current whereabouts eludes me at this time.

Thanks for the info, but the only powder that I have at the moment is N320.

 

[JEVapa]

I’m trying to work up a cowboy load that my Henry 357 rifle will like. I’m using N320 powder and SWC bullets. For 38 special, the load data states that the velocity will be 886 fps for the starting load which is what I want. The load data is based on a 6 1/2” barrel. My rifle doesn’t like 38 special, and I can’t find a good 357 magnum recipe for a cowboy load using N320. So can I use the same load recipe in 357 brass? From my understanding, a concern in using a 38 special light load in a 357 case is that the possibility exists for sticking a bullet in the bore. My thinking is that with the 38 special load being shot out of the rifle, the velocity will be increased which would eliminate the concern of sticking a bullet. Am I right in this thinking or am I not thinking about it correctly?

Did you try here?
https://www.vihtavuori.com/reloading-data/handgun-reloading/?cartridge=41

 

[b52fizzle]

Have you tried deep seating bullet to 38 special OAL in 357 length brass with 38 special load?

 

[OkieJoe72]

Did you try here?
https://www.vihtavuori.com/reloading-data/handgun-reloading/?cartridge=41

Yes, that’s where I’m getting the load data for 38 special but I couldn’t find a cowboy load for the 357 magnum.

 

[OkieJoe72]

Have you tried deep seating bullet to 38 special OAL in 357 length brass with 38 special load?

My rifle doesn’t like the 38 special OAL which is why I’m wanting to use 357 brass.

 

[JEVapa]

Yes, that’s where I’m getting the load data for 38 special but I couldn’t find a cowboy load for the 357 magnum.

Ok. I shot you a text and dropped a pdf in a PM

 

[OHJEEZE]

Thanks for the info, but the only powder that I have at the moment is N320.

I know that!

Here is the burn rate chart!

Do some research on how to substitute powders with published load data!

 

[OkieJoe72]

I know that!

Here is the burn rate chart!

Do some research on how to substitute powders with published load data!

Awesome! Thank you