I came across a box of these sitting in my bins, no clue what it really is. In a Hornady box marked 158 gr no part #the weight is correct. Anyone see these before ? I'm wondering if these should be loaded as jacketed or lead.
I have a couple of boxes of the half jacket like that without a bullet. Never seen a mold but someone had to make them. I think the boxes are yellow. Maybe I could fill with lead and make a mag wad cutter when I have nothing better to do.
If they shoot well, your load sound like a good one. If they don't, try 12 grains. Contrary to what many think, you can get bore leading with the half-jacket bullets. If you have no leading, that's great.