Steel case anything is probably repackaged Russian bulk plinker ammo.
Winchester calls this "USA Forged" and it's claimed to be made in USA. But that doesn't make it top-notch ammo. Commercial steel cased ammo, wherever made, generally is inferior in quality because the use of steel for casings is a cost containment measure. Ammunition made in the past for military use having steel casings was typically made to quality standards; however steel is never (rarely?) the material of choice for making small arms cartridge cases. Military ammunition with steel casings was typically made to conserve certain materials.
One nice thing about reloading is that I don't pay much attention to the cost difference between calibers. I hear people talking about preferring a 9mm over a .40 because it's cheaper
There is a price jump from 9mm to .40/10mm bullets. Taking Hornady brand as an example, .40's are closer to the price of .45's than they are 9mm. But, anyone who can afford to buy a gun and reloading gear shouldn't mind this difference or even much notice it, I'd think.
I use scrap lead scavenged off the top of the berm
Years ago, I mined lead from the berms of one of the ranges where I'm a member. However, since then I've become more conscious of just how contaminated that earth out there is. Some bullets hit and remain relatively intact; others shatter into innumerable tiny fragments including dust size. So if you go out there and mine it when it's dry, there are lead particles in the dust in the air around you. You don't want to go out there when it's wet, mining lead in the mud just doesn't work. This can be a good source of material if you take proper precautions. I don't know if lead dust will penetrate an N95 simple dust mask; maybe a respirator is required. Then you'd have to make sure your clothes got properly washed away from other household laundry. Disposable gloves, of course. Personal showering required after; they say that hot water opens up the pores, allows lead to get in. I'm not up for cold showers. I'm not a fanatic about lead poisoning, but it is a concern. All the folderol of trying to avoid lead exposure makes me just want to get lead in some easier way.
I used to work with an old guy who was into fishing. He made lead downrigger balls to sell to other fishermen. One of his sources of lead was old car batteries. Now there's the hard way to go; and definitely not recommended. He got sick from this, he was under a doctor's care for some time trying to reduce the amount of lead in his blood.
When I did mine lead from the range, first thing when I got it home was I washed it off in a kind of sluice. That got most of the dirt off of it, but also presumably most of the small particulate lead dust. Of course it must dry thorough before you attempt to melt it down.
1 to 3 cents worth of gunpowder,
It's pretty amazing how long a pound of pistol powder can last you. Unless of course you are a bullseye shooter plowing through hundreds of rounds a week in practice or similar. I've been curious enough over the years to want to try this and that pistol powder. Lately the manufacturers have gone nuts introducing new pistol powders, now I've got way too many, will never use them up in the small charges that are typical to most non-magnum pistol rounds.