I am really scratching my head on this one. Is it a modern T/C "maxi ball" or not?
The Thompson/Center "maxi ball" was developed a few decades ago. It is a very popular muzzle loading bullet that has a somewhat unusual shape that allows it to be rammed down a rifle barrel easily, yet still expands upon firing to fill the rifling grooves . T/C makes and sells them in packs of 50 or a 100 in calibers 32,36,45,50,54,and 58. Or you can even make them yourself with a Lyman bullet mold, but are limited to only two calibers, Lyman mold #454616, a 245 grain, 45 cal. Or Lyman mold #504617, a 370 grain, 50 cal.
So, I want to say the featured bullet is nothing more than a T/C maxi ball. one of untold millions made and used in the last 20 years. But what bewilders me is the deep white patina on this particular bullet. is it possible such a patina can form in a relatively short time? Or, is this a much older bullet? A reference I used in researching this says the maxi ball is a modern resurrection of a bullet used in the muzzle loading era to solve the above mentioned need to fill the rifling for accuracy.
Could this be a rare precursor to the maxi ball or is it a modern bullet exposed to very unusual soil conditions? Either way its interesting. I wonder if other lead found in the area shows the same level of oxidation?