Sorry, I don't know the answer to your question, but here's a fun story.
Last summer I ran into a guy shooting a Sig 220. He was doing some informal goofing around and was shooting nothing but the Federal Gold Medal Match 45 ACP. I asked him how he could afford to just screw around with such expensive ammo. He said he went to a garage sale. This ladies husband had died and she was pawning off his junk. He had 10,000 rounds of this Federal ammo piled up. He asked what she wanted for all of it, she replied $300. He whipped out the cash as fast as he could.
He didn't even own a 45 at the time. He does now.