Until recently my go to was IMR 4320. That can is all but empty. I've had a number of 32 Specials over the years. The exact charge varied with the gun. The really old Corelokt's were the most accurate bullet so far. My best 4895 load with my current war erra 94 with Hornady bullets was a bit below the max, but I get a good group and somewhere in the five shots, I get a stray, off an inch or so at 50 yards. IMR 4064 has been good for me as well,again, amount varies rifle to rifle. I'm shooting with a Lyman peep sight. Reloader 7 is going to be my next try. I have noticed that at least my current rifle does not digest max loads. You can feel the extraction more. I don't see much accuracy difference in Speer and Hornady, but Speers give me sticky extraction at charges that Hornady doesn't.
Contrary to everything I've read, none of my 32's have done well with cast bullets. If TrailBoss ever becomes available again, I'll try again, since it has worked for casts in most of my other rifles.
Good luck
Bfly