Opinion Request: Best Milsurp candidate(s) for casting?
Long story short: I might be looking to buy a milsurp next spring. For shooting rather than collecting.
I've been watching the market a bit. The .303 brit guns seem to be coming down in price as the cheap ammo becomes scarcer. The Nagants have gone up but seem to have stabilized. Both of these take the .311 caliber bullets which are more expensive so (in my mind) good casting candidates. Brass is expensive but both of these calibers are being commercially loaded and have some brass availability. The .303 stuff is a bit cheaper. I've heard that brass lasts a long time for 7.62x54 I don't know if the same can be said for .303. From reading here I've seen that the 6.5x55 is a well loved and versatile caliber but controversial as far as cast goes. And that's about the extent of my knowledge.
I know some of calibers are really hard to source brass for, and that the golden age of cheap milsurp is over. Since I've got a casting setup, it makes sense to choose a milsurp that lends itself to casting and so I thought I'd get some opinions and resources before I'm seriously shopping. Any resources and opinions are welcome.