Originally Posted by
sutherpride59
With water dropping your alloy should be plenty hard. FROM WHAT IVE READ not experience these don't age soften much unless you use ALOT of tin, I have some that were cast with way too much Sn last year and they only dropped by about .5 BHN(I tested it 3 times and took an average). If they do often it won't be enough to hurt anything. I would urge you to get a Lee hardness tester and keep good records of your alloy hardness and what your mix is. When you find the right match you want to be able to make it again. I'm darn close right now to so rounds I made last year, I lost where I had written down the specifics of the load and its taken me several weekends to get close to where I was.