CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The High Road, nor the staff of THR assume any liability for any damage or injury resulting from use of this information.
The Alliant site shows nothing:
http://www.alliantpowder.com/reload...s>ypeid=1&weight=125&shellid=28&bulletid=28
Which is strange, because the free Reloaders Guide from Alliant shows:
357 mag JSP,, Rem 5 1/2 primer, 1.570", 5.6" barrel:
Red Dot 7.0 gr. 1,410 fps, 34,000 psi
I plug it into Quickload and get 32,000 psi 1306 fps, but who knows if Alliant counted the cylinder as part of the barrel length.
I just did this with 125 gr Speer JSP 1.59"
7 gr Red Dot better
8 gr Red Dot better, some striations on body some cratering, no sticking
9 gr Red Dot, kicks harder than 38sp 158 gr, some tiny striation sticking at mouth, full crater but no craters stick.
10 gr Red Dot, kicks harder than 38sp 158gr, some tiny striation sticking at mouth, full crater but no craters stick.
I plug that into Quickload and get 58,000 psi, which is nuts, due to unburned powder making the flash.
That same revolver cannot shoot book loads of 125 gr W231 without the primer cratering into the firing pin hole while the case backs out and sticks in the rough chambers, thus jamming the revolver. But that was with Nickel plated cases, an out of control variable.