MemberJanuary 13, 2021 at 8:40 pm
Just starting loading .32, and the only “pistol” powders at LGS were Herco and Green dot. Rolled the dice and got Herco. I found some old data (from when it was made by Hercules instead of Alliant) and it saying 2.7 grains max. Anyone have some decent loads? Im gonna be using a 78 grn cast boolit.
coriolis7GuestJanuary 13, 2021 at 8:40 pm
I have data for Green Dot (1.6 to 2.4 for 75 grain), but Lyman Cast book doesn’t have Herco. Sorry!
ETA: Since this is a fairly low powered round with fast powder and a cast bullet, if you are willing to take the time you can work up your own load without data (or at least without trusting one single source of old data). Find what speed you can expect to safely get from other load data for 32 ACP with powders that are similar to or faster than Herco. Start really low with Herco, like half the max charge or less for what you found, or below the lowest MIN charge of any powder in load data you can find. Check the bore with every shot. I would not recommend this with FMJ or in calibers with slower powders, but worst case is you get a stuck bullet that you can pound out with a cleaning rod. Keep increasing charge 0.1 or *maybe* 0.2 grains at a time until you get reliable cycling or when you get the velocity you can expect with other similar powders. Take your time, use a chronograph, be safe.
whogibbafukGuestJanuary 13, 2021 at 8:40 pm
herco is REALLY ancient. Hit Ebay for loading books from the 50’s to early 70’s
DonBosmanGuestJanuary 13, 2021 at 8:40 pm
Alliant has no load data for .32 using Herco or Green Dot.Here is a 1987 Alliant chart which shows one load for each.[Hercules_1987.pdf (castpics.net)](http://www.castpics.net/LoadData/Freebies/RM/Alliant/Hercules_1987.pdf)But, since this is so old, call or write Alliant and ask them what is safe. I’ve written them in the past and they have, in the past, gotten back to me the same day.[Alliant Powder – Ask the Experts](http://www.alliantpowder.com/questions/default.aspx)