Tested some 145gr mihec boolits in the shadow 2 on monday. 3.3gr of universal (I'm out of ap70). Showed some leading after 10 shots.
The mr bullet feeder mtype expander didn't help. If anything it's worse as the step in the expander shaves tiny slivers of brass out the case mouth.
Next step is to machine up my own plug out of D2. Or whatever I can source through work.