That's funny - those are the main ones I do reload for, AND cast. With some REALLY lucky finds, (and an estate sale that literally landed in my lap!), plus a friend who likes shooting my guns, and buys components for me so she can keep doing it - right now I am quite literally reloading 9mm for the cost of the electricity to run the lead pot and the toaster over for powder coating. I don't think I can figure what that actually is, so I am guessing it's about $.25 per 100 rounds. Brass in 9mm and .223 are EVERYWHERE, and with my $10 pawnshop find Forster trimmer, plus donated RCBS decrimping die set, easy trim and save, still economical and fun. The 7.62x39mm brass, those I have to carefully look for when I am done - reloadable brass in that caliber does't grow on trees, but the low power plinking cast bullet loads I do in those doesn't over stress the brass. Wanna watch people freak out a bit? Show them a handloaded home cast powder coated 7.62x39mm round - they can't believe it. It's a fun hobby that keeps me outa the bars and feeds my other hobby, UNloading ammo at various targets!