Need ammo option advice for my AEA Bullpup 50cal

I also have an AEA. 45 Challenger long barrel standard stock. What I'm doing now is making my own. First slug your barrel so you know the diameter you need. Armed with this knowledge and how long a bullet you can load, enables you to choose a mold. I use 3 different Lee molds. They are low cost and have not failed me. Run pure lead, as it is soft. I drop mine onto a wet towel from the mold. I don't drop them into water as this can cause some hardening. There are numerous YouTube videos with detailed instructions for casting. Safety is an absolute must.
 
I also have an AEA. 45 Challenger long barrel standard stock. What I'm doing now is making my own. First slug your barrel so you know the diameter you need. Armed with this knowledge and how long a bullet you can load, enables you to choose a mold. I use 3 different Lee molds. They are low cost and have not failed me. Run pure lead, as it is soft. I drop mine onto a wet towel from the mold. I don't drop them into water as this can cause some hardening. There are numerous YouTube videos with detailed instructions for casting. Safety is an absolute must.
Thank you