I'm getting back into casting after about a 15 year layoff... Never worried about alloys and stuff back then so I've been trying to catch up. TONS of new stuff to learn here!
I can get my old stuff tested at work and I've learned, so far, that a lot of it is 97% lead without any SN and less than 1% SB . Got another 100 or so pounds of old surcharge soils testing weights that have .5% Niobium in it! I've also just converted about 25# of 7.5 shot into ingots so I can use it to harden the rest of my stuff... I'll get some solder for the SN
Anyway, my dilemma is that I want to shoot my rifle like a pistol and my pistol like a rifle...
I going to shoot sub-sonic 45gr bullets in my bolt action .223. And I've got a blow-back 9mm carbine, so I need to push them fast enough to cycle the action.
What sort of alloy/hardness should I be trying to create?