make sure to have some sort of a plate or bar under also, and run bolts all the way through.
and i would secure the whole bench table to the wall permanently as well with good anchors. it is what i had to do, eventually, as i also got 3d printers on the same bench, so had to deal with eradicating any wobbling.
i had a tall mount initially for the dillon, same one you show on the picture, and it is set low as shown now for a reason as well.
way less wobble/swinging and way more comfortable to reach the case feeder and overall ergonomics are better this way.