[AlaskaMike]

I really like most of the SWCs in 150 to 158 grain range with a plain base. Generally that means either the RCBS 38-150-SWC or Lyman #358477. I'm not familiar with the Lee or Saeco lines, but I'm certain that they have something similar.

The Lyman was Phil Sharpe's design when he collaborated on the .357 magnum back in the 1930's, so it has some nice history with it. It's also available in a 4 cavity mould, where the RCBS SWC is only a 2 cavity mould. You'll be able to make bullets quicker with a 4 cavity mould vs. a 2 cavity.

It would probably pay to try some different cast bullets in your gun before you invest in moulds. The reason I suggest that is that you might buy a nice 4 cavity mould with a plain base design only to find that your gun strongly prefers gas checked bullets. That would be pretty rare though.

With the conventional bullet designs that use a single lube groove, you'll need a lube-sizer to size the bullet and pack lube into the lube groove. You can get around this using the Lee tumble lube designs. They have several small lube grooves and you 'tumble lube' them in liquid alox. It's a little messy but you avoid the up-front cost of a lube sizer.

I'd suggest you hit local garage sales and gun shows. I scored big and got the vast majority of my reloading and casting equipment at a garage sale for pennies on the dollar about 10 years ago. Unfortunately (or fortunately, depending on how you look at it) casting doesn't work out for lots of people, so there's perfectly good casting equipment that frequently turns up at garage sales and gun shows.

If you just want the cheapest, quickest plinking bullets, I'd get a Lee 6 cavity mould in one of their tumble lube designs and some liquid alox. Their 6 cavity moulds are of much better quality than their 4 and 2 cavity moulds, and you can make a seriously huge piles of bullets in a hurry with a 6 cavity mould.