The evolution of the 300 Blackout - great day at the range with Blackarc Munitions and Hornady

[Bantam1]

I have been looking at these cases for other calibers. Just to clarify, loading them you are using the same powder as normal, just increasing the charge weight?

 

[357Max]

I have been looking at these cases for other calibers. Just to clarify, loading them you are using the same powder as normal, just increasing the charge weight?

Yes at least for the powders I was already using.
5.56 AA2520/TAC/N540
300 BO N110/SBR Socom
308 RL-15.5/PP2000/Varget/N550

The little added capacity might open the possibility for some powders that would traditionally be to compressed. Example 223 loaded long for bolt gun N550 works great in these cases with heavy pills 85gr +