I don't cast boolits out of necessity, I do it because it's an enjoyable pastime. Getting way lots more ammunition to shoot at a fraction of the cost of jacketed bullets is a perk. Everything about casting/reloading/shooting is fun and interesting. Unfortunately I'm not casting right now. It was 108 degrees yesterday and it's supposed to get up to 111 degrees today. I don't cast boolits during the summer at all. For me there is "casting season".
When the cooler days of autumn come on and the leaves start to fall from the trees, it's time to break out some ingots and heat up the pot. Between October and March I'll cast up more rifle and pistol boolits than I could possibly use in the coming year. This also includes powder coating, because baking stuff when it's already baking hot isn't much fun. It's times like these, when if you tried to do any casting you'd sweat 80 gallons and dry up like a prune, that you miss the combination of tranquility and the challenge of making boolits.
Right now I could pack up a lunch and drive up into the mountains where it's cooler. I could take a portable target stand and get in some shooting (plus take a fishing pole - just because). There's plenty of things to do, but because it's too hot to be working with molten lead, I'm stuck wondering how that new set of molds I just bought is going to work, or how that batch of alloy I mixed up last spring is going to preform?
A lot of you are lucky and get to cast whenever you want. Do you other guys have a "casting season" too?