he's definitely fos about tin not hardening the alloy. Pure tin results in a very hard cast bullet indeed. Antimony "crystallizes out" of lead. Tin helps the antimony to remain properly alloyed with the lead. Split Nose bullets are 95% tin, 5% antimony, cast straight out of "non lead" solder.
Interesting bullet casting resource site
If you cast your own bullets, please take a look at this site. Its an excellent resource site. You can decide for yourself if it has value. I hope it does.
http://www.austinrifleclub.org/Documents/Articles/Bullet Casting Primer.htm
RIKA
http://www.austinrifleclub.org/Documents/Articles/Bullet Casting Primer.htm
RIKA
