I hope I'm not to late for this party , Hey Jeremy I can probably help you with some .172" ammo .As I'm not a paid sponsor I can not sell you ammo on this open forum but I think I can give you ammo for free , I do make some .172" in swage and in hand cast below is a pic of the 26 grain hand castand some 24 grain swage that has a boat tail and a fairly good size hollow point .All I ask is that you cover the shipping costs and we will get you some lead sent your way .
Definitely watching this one . Got a barrel and a gun to mount it to , just need the right mold .
Wish I had the time and resources to get into pouring my own. Seems a bit time consuming to me though.It'd be nice to find a place where I could get a drop-in .172 air rifle barrel and just order tins of those sweet shooting .172 rounds that Cedric (tofazfou) swears by.