For a .357 mag, anyone have data on this powder? I will be shooting 140 & 125 JHP bullets. Thanks for the help.

None of my books list anything. If you're open to data from the web, there's WAP/Silhouette loads here.
http://stevespages.com/page8c.htm

Thanks for the info.

If you go to Western Powders Handloading Guide 8.0, you will find all the info.

Hell of a fine one in a 10mm, 45acp and 9mm. Havent tried it in 357 though. I'm low and see no resupply in my future ( cant find more right now) and will have to reserve my stock for my those calibers.

Do let us know if you load with it though, I'm sure curious.

Good powder for straight-walled magnum handgun calibers . Ball powder , meters excellent , use a mag primer .

Silhouette seems to be an excellent powder for the 380 and 100 gn copper plated bullets. I’m seeing Longshot as an awesome 40 S&W load with 180 gn copper plated bullets.

I found that powder is close to the amount of powder that I use in my 9mm pistol loads with Alliants BE-86 powder.

I could not find data for BE-86 when it first came out and used the data listed with your powderas a guide line.

There are a lot of powders that are "Copies" of other company's powders, just the names or numbers are changed.

Good shooting.

Very interesting data, especially with the 125gr .357.
My supply of A 5, my preferred .357 125gr powder, is dwindling.
Some of what I saw in steves data gives some faith in loads I have considered using IMR 4227. I have a fresh pound of that.
Jim