I load .38/44 equivalent loads for my Marlin 1894C. I have lots of .38 Special brass, not much .357 brass, and the Marlin holds one more .38 in the magazine. I label the box "Rifle only!" and I mark the case heads with a red Magic Marker in case they get separated from the box.
Do not use .357 Magnum data in .38 cases unless you seat the bullet out to the same .357 OAL, otherwise the pressure will be way too high. I use QuickLoad software to calculate my load data, but the best I've found is the old Elmer K. load using I don't remember how much 2400 powder (I use 158 grain RNFP bullets instead of 173 grain wide-nose SWC's.)
For my revolvers I usually use .357 brass, although I have shot the "rifle" loads on occasion. BTW, 99% of my reloads use cast bullets.
I did have case head separations when I tried loading Blue Dot powder to about 37500 psi in .38 Special brass; that was before Alliant put out a bulletin that Blue Dot was not safe in some .357 loads. So be careful. (Herco, AA#7, and 2400 are better powder choices. Power Pistol ought to be good but I haven't tried it yet)
None of this precludes the possibility that your friend might be an idiot
Hope this helps.
Do not use .357 Magnum data in .38 cases unless you seat the bullet out to the same .357 OAL, otherwise the pressure will be way too high. I use QuickLoad software to calculate my load data, but the best I've found is the old Elmer K. load using I don't remember how much 2400 powder (I use 158 grain RNFP bullets instead of 173 grain wide-nose SWC's.)
For my revolvers I usually use .357 brass, although I have shot the "rifle" loads on occasion. BTW, 99% of my reloads use cast bullets.
I did have case head separations when I tried loading Blue Dot powder to about 37500 psi in .38 Special brass; that was before Alliant put out a bulletin that Blue Dot was not safe in some .357 loads. So be careful. (Herco, AA#7, and 2400 are better powder choices. Power Pistol ought to be good but I haven't tried it yet)
None of this precludes the possibility that your friend might be an idiot
Hope this helps.