Regarding Iron Will Broadheads: I don’t know if it’s rust on the blade, per se, or simply tarnish. I use a very fine polishing cloth on mine at the end of the season, coat them with a very light sheen of oil and put them back in their pelican case for the off season. Crack it open at the start of season and they look good as new. It’s an additional step and somewhat of a pain, but the quality of that hardened A2 steel is worth it IMHO.