You have an Academy Sports?
Their house brand makes 54r it’s no metal jacketed so I wouldn’t recommend a steady diet but for a couple times a year or once a month sure.
PPU has some, of you handload I have a mix I found online that should work. Also my phone corrected bi-metal to no metal in my previous reply don’t know why
Fleet Farm if you have any of those near you, else they can ship to you. Brown Bear ammunition, non-corrosive.
Edit: They don’t ship to NJ CA MA OH KS IL NY DE DC WA CT