There's been a lot of posts about different calibers in different rifles here, but very, very few about reloading .38 and .357 cartridges for rifles. I've seen quite a few Rossi lever action rifles sold in this area and very little reloading posts, recommendations, and experiences about reloading for rifles. I'm looking at a Winchester 1885 by Miroku chambered in .357 right now, and even the loading manuals provide little to no information~!!
Colt45SA -
Howdy !
I’ve owned & shot a Marlin 1894SC .357Mag, an H & R SB2 in .357Maximum, a benchrest-grade single shot bolt action chambered in my “ .358AutoMag “
( .357AutoMag neck expanded .001” to full .358” rifle cal ). I have also loaded for and shot 2 Marlin M-336s in .35 Remington, and a CVA Hunter .35 Remington. Most of the .35 Remington work has been w/ lower power and reduced loads using SR4756,
SR4759, H4895; and H4198.
*** In the 1894 Marlin .357 Mag, the H & R .357MAX, and the custom “ .358AutoMag “,
WW296 and Magnum primers shot best; under all bullet weights I tried. That included things like Lyman SWCs of 158-172gr, and Hornady + Sierra jacketed bullets of 170-180gr ***
*** For my .357Mag loads, I found the same load that has shot so well for me for 50yr
is 14.5gr WW296 and SP Magnum primers… under the lead SWCs of 158-172 gr.
These did not have to be GC’d. The loads worked well in a variety of brand name cases;
both nickeled and plain brass, and also in other ( Ruger and Colt ) revolvers…. shot great in my Marlin 1894SC.
* ** This powder charge wt was the minimum charge of WW296 Olin/Winchester used to list in their former reloading handout pamphlets. It is the same load I have shot/shoot in my .357Mag “ N “ frames. I loaded my .357Mag cartridges to fit the comparatively shorter “ N “ frame cylinder, and it also fed and shot well in my 1894. I was going to try “ score “ shooting @ 100yd w/ the 1894SC… just out of curiousity, but the trajectory levels and basic accuracy were too far short of what I wanted/needed ( my gun, my loads ). YRMV.
Beyond .357Mag:
In my bolt action “ AutoMag “ wildcat, plated Remington .358” cal 150gr PSPs proved to be just stupid accurate. The same bullet also shot superbly in my M-336
XLR .35 Remington.
Along with my reduced loads work in .35 Remington, here’s what I have seen range testing the SB2, and AutoMag bolt rifles: There seems a plateau is reached @ 24gr WW296 under bullet weights of 140 - 180gr; when shooting WW296 in the smaller cases from a 20 -22” barrel. IF something more than that is still desired in .35” calibre, the next incremental step up ( powder capacity wise ) would be to go with “ reduced loads “ in .35 Remington, using a powder like 2400, H4895; or H4198. For my 100yd .35” cal accuracy shooting, I have gone over to shooting reduced loads of H4198 under
“ Cutting Edge “ 150gr turned brass Extended range “ Raptor “ bullets.
But…. I digress !
Best of luck in your endeavors !
I have no pic of the 1894 .357Mag I eventually traded.
With regards,
357Mag