300 Blackout

[Mustang Jon]

I have the Lee 309-230-5R mold and I’m going to get the Lee C312-155-2R mold to cast for 300 Blackout. I have 2000 pounds of lead that is a consistent 10 BHN (using the pencil test). I will be powder coating both bullets but I will be using gas checks on the 155 gr bullets. My question is, do you think I can get by with using my 10 BHN lead without having to add anything to it to make it harder?

 

[slow is slow]

Just depends how hard you push them. I can shoot 10 in one of my deep hollow points in the blackout no trouble, but I'm not pushing them crazy fast