I have no experience with cast bullets. However I just received some for free. A friend just bought some at an estate sale. They are marked 44 & 357 caliber. It appears that the bullets were cast by a mom &pop outfit in a small town nearby some time ago. I've tried to look them up and call them using the address label on the box. I haven't had any luck. I don't know how old the bullets are but I suspect they have been out of business a long time. My question is how much variance should I expect to find bullet to bullet? Most of the 44 caliber bullets are measuring .431 inch and the .357 bullets are measuring at .358. Weights on the .431 bullets are running from 231gr. to 239 gr. these also have gas checks on them. The .358 bullets ( no gas checks) are less wide spread in their weights. They are running within 1 to 3 grs. of 152 gr. I have no way of measuring the hardness of the lead. I'll send some photos as soon as I figure out how to send them from my new phone. I also have some head stamp questions on a bunch of free brass that came with the bullets, that I have never seen.