I have five gallons of 9mm range brass that is full of sand and absolutely filthy. Wet tumbling with pins is the only option to get the mud out of the inside of the cases. Should I: 1.) Wet tumble with pins then decap on my 750 during loading? (Potentially getting sand in my press from depriming) 2.) Rinse off the bulk of the sand and grit, then decap on a separate tool head, then wet tumble with pins, then load on the 750? (Separate tool head, but still potentially getting my press nasty) 3.) Decap on a separate single stage or handheld de-primer, wet tumble, then load on the 750? (Time consuming, but definitely the best option for keeping the 750 clean) I have no concern with dirty flash holes affecting accuracy on my bulk 9mm, but I do not want to have a bunch of gritty dirt and crap from depriming gunking up my 750. What do you suggest?