Range test of 115 grain SWC for 32 S&W Long in 4" S&W 631
In March 2019 I was over at my cousin's, who had recently sold his pawnshop, but kept some of the inventory. He knew I reloaded 32 S&W Longs, so he gave me a Lyman 2 cavity mold #311008CV. I thought about firing up my old Plumber’s Forge and casting some; then remembered my cousin also had a Remington GB tub full of bullets already cast from the mold. I figured to try them first before I indulged in production. There was not much information in my numerous loading manuals for the 115 grain SWC in 32 S&W Long, other than the Lyman Cast Bullet Manual. The 115 grain SWC normally is associated with the 32-20 round. The Lyman recommended from 2.5 to 3.5 grains of Unique. I tried two loads: 2.5 grains of Unique and 3.0 grains of Unique. Shot out of my 4" S&W 631. The bullets miked out at .313".
2.5 grains / 115 grain lead swc averaged 666 fps
3.0 grains / 115 grain lead swc averaged 861 fps
They seem quite usable. The 3 grain was the most accurate. I intend to try a 2.8 grain Unique load which should run about 780 fps. If I ever run out of the boolits in the tub, I reckon I will start casting them.