You may need more powder for those big cases. I had minimal cardboard penetration with 3gr of shotgun powder in the .444 cases. Just had good results with 3.5gr.
After work today I had 1 9mm rice load left. Wasp peeking out of the wellhouse eve. I shot him in the face and others swarmed. I retreated to load ammo.
3gr of shotgun powder in 2 .454 cases, 3.5gr in the big .444 cases.
Went out and 2 were peeking out. Blew them away with one .444 load.
I took down one more with the other .444 load then loaded the 2 Casull loads. I had one flying around, took a shot from 7ft away and it blew him 25ft in the air. I laughed so hard I almost fell over. Part of todays tally with 4 shots.