October 3, 2020 Update: This week I made three new bullet moulds, or rather sets of interchangeable cavities for my "universal" bullet mould.  One set was for a relatively mundane 350-grain .50-caliber bullet for use in muzzleloaders and for loading .50 AE shells.  The second was an ultra-heavy .356" diameter slug for a sub-sonic .350 Legend load.  Initially, I made the mould to cast 350-grain bullets, but it turns out that a 350-grain .356" diameter bullet is so long that it cannot be loaded into a .350 Legend case without bulging the case to the point where it won't chamber.  Thus, I ended up cutting back the length of the mold to the point where the bullets were usable, at which point it is casting about a 260-grain bullet.  I test-fired a few loads with the 260-grain bullets, but I have not identified the ideal powder charge yet.  The loads I started off with used a relatively conservative charge and did not generate enough gas pressure to cycle the action.  The third bullet mold was for casting a revolutionary new type of shotgun slug that ended up performing very poorly.  Anyway, this weekend I expect I will upload another video about putting the finishing touches on a muzzleloader--this time the 'paracord tacticool' model.