I got a RCBS u/s cleaner from amazon. It has been discontinued and I only paid $118 for it back in 2016.
I would put water in the u/s and then as I place the bucket of gunk in there I would tip it as much as possible while the base remains underwater in order to eliminate the air pocket under the bottom rim and use it like that.
I would put water in the u/s and then as I place the bucket of gunk in there I would tip it as much as possible while the base remains underwater in order to eliminate the air pocket under the bottom rim and use it like that.