fouling with cast bullets?
If you cast a mixture of wheel weights, tin and lead (in the right proportions) and water quench them it is not much of a problem. Especially if you keep the velocity under 1900 fps. You can also use linotype lead mixed with pure lead and tin too.
The lubricant for the lead is important too.
It is possible to electroplate copper on lead bullets. I have not done that.
But on the bright side, jacketed bullets are still available and there are a large number of companies that make them. Unlike the issue of brass, which is in exceedingly tight supply now.
I usually load Berrys FMJ for light target pistol loads. Other more expensive name brands like GoldDot for P+ self-defence loads. I got a box of Berrys 1000pcs .40cal 155gr round nose Friday for $118.99.
Thats after waiting in line outside of Hyatts in Charlotte. In the years past I could browse and strike up conversations with the staff. Now its a madhouse from open till close.
And I got the last box of .40 projectiles that had in any brand.