Paint gun tip and advice

We are talking latex interior paint? Or white acrylic hardy board trim paint.

it’s listed as a acrylic latex paint. Can’t find anything specific about this paint, but seeing up to 10:1 for latex as a general rule. Going to do a couple test pieces, see if I can learn something out of this. I am guessing the painter used a airless gun, I may look into a economy model if I have to