I cast my first ever bullets recently to better feed my Uberti ‘76 SRC in .45-60. I used Accurate moulds 46-305C which weighs 303 grains when sized to .459 and lubed with SPG. Cases were shortened Winchester .45-70. I tried two loads;
1. 60 grains by volume of Old E 3F as I was out of 2F
. My new Garmin Chrony indicated an average velocity of 1478 fps which seemed to really be cooking from the SRC barrel! Deviation was 37 fps but accuracy was not great. I’ll do some more experimenting with 2F when I get some because I will see if a slightly lower velocity treats the soft bullets better on their way to the target. Temps today were -3 Celsius, overcast with a bit of snow on the ground. A good winter day for shooting.
2. 12 grain Unique, the old stuff. I really like Unique and have used it for years. This load was pushing a commercial 315 grain FPGC bullet. Average velocity was 1173 fps and it shot amazing! I had previously started at 10 grains and worked up. This is a very soft shooting, economical load and I’ll try it nex time with the accurate 46-305C and may try 12.5 grains to break 1200 fps.
I’ve had the SRC for a few years and previously worked over the action some as people have described here so the trigger and action are quite acceptable now. Next is to try a different rear sight and I plan to order a bullseye rear to try based on King Medallian’s posts. Most of my open sighted rifles wear receiver peeps which isn’t an option on the ‘76 and I’m not really wanting to use a tang mounted peep purely out of personal preference. All bullets hit quite high so if anyone has modified their SRC front sight please let me know. Otherwise I may have to build it up with JB Weld or similar as an experiment. I also had my ‘73 out and will update that thread as well. Thanks for all of the info you guys have shared on this forum. It’s been a great help to me.