I shoot a lot of lead bullets out of my 94 and Savage 340. I use the Lyman 31141 (now called 311041) with GC. I cast them out of COWW, powder coat every lead bullet I shoot and still lube them. Never a leading problem. I also use lead bullets in my 38-55's, 40-60 Maynard, 40-65 Win, 40-70 Sharps Straight, 6 45-70's, 45-90 & 50-70. I use the same protocol in all these calibers and NO leading, EVER!
Try powder coating, you'll like it!
PS: Be sure to clean your rifle after shooting jacketed because lead just loves sticking to copper!
I tried the cast stuff to try to bring cost down. But plated bullets are just as cheap or cheaper when buying.
I use to cast buckshot and slugs years ago. But now my spare time is spend shooting/hunting/fishing.
I would like to revisit the cast in my 30/30 but just with the stuff I already have.
If I was into CAS and was slinging a lot more lead I would consider things differently. For the guns I have that can use lead it’s less then 1000rnds a year. My other guns are just not lead friendly speeds and to drop the speeds would loose the point of the cartridge.