My homemade black powder

[Graysmoke]

Almar, 45s work well. I milled for 24 hrs and no pile up. A small mill harbor freight only put in 100 and did a good job.
Doublebuck, update on the lexan plate in the 40 mm press. It started cracking due to a slight concave piston, my piston is hollow, I formed a spacer from a white plastic water barrel 3/16 thick and plenty tough. This keeps my piston loose after pressing a puck, I remove the bottom press plate press again till the puck is even with press bottom only a few taps and out the puck comes with out a stuck piston!
Graysmoke

[DoubleBuck]

Almar;
I use 9mm FMJ bullets. Not because they're better than .45's but because I bought them on sale, and they were cheaper. They work great.
Graysmoke
Sounds like you solved the problem. Good luck!

[LAGS]

I also tried 45 casings filled with lead . They worked good but there was still just a little lead exposed.
I had crimped them over some more with a Socket and hammer.
I probably could have done better if I topped the lead in the case with a piece of sheet brass , then crimped the case closed some to keep the brass covering the lead.
But , hay
There are so many options or things we can use .
Like copper tubing filled with lead with copper closing the ends over the exposed lead.

[Graysmoke]

Almar, I misread the post, I-stopped useing lead filled shells and went to 45 fmj projectiles. The 45 filled casings dug into the lead end and I had lead all over my tub. Sorry for the mixup.