My thoughts exactly. I also need to experiment with a low velocity explosive like urea nitrate to see how it performs as a replacement for powder. Just in case the feds decide to muck with gun powder taxes, transportation regulations, ownership, etc.
Now primers.... I have yet to figure out a way to DIY for primers.
I wouldn’t try to make primer. Hat is, if you appreciate your fingers.
You need to buy a lifetime supply of primers and powder due to current Hazmat laws. No one cares about lead and brass now (yet).