Javelin 34g slugs and MK3 settings

I recall a video where Matt Duber mentions he is sending the 33s at 1050fps. I can't get hits with google or this forum search to see what he's using for MK3 settings. Does anyone know? Anyone else here gpt great results with an M3 around 1000 to 1050 fps that would share settings for those slugs?

Just trying to save myself sending a lot of slugs to experiment get to settings that someone else has already figured out.