I just finished asking about small pistol and rifle primers. Now I need to ask about what i can substitute large pistol primers for. I found some put away.
Nothing. You can only use them in large pistol cartridges, not rifle (e.g. .44mag, 45acp, 10mm, 454 Casull, etc). This is assuming it isn't the 45acp brass isn't using small pistol primers like sometimes seen.