Dry, a little less than the threashold where you need ear pro. Maybe a little less than a .22 Wet, with a very small amount of water (not usually recommended because water and the gas make acid) or a non flamable oil like a squirt of Ballistol fairly quiet. But the only suppressed gun that is "movie quiet" is a suppressed subsonic .22 .45 suppresses well because most .45 ammo is already subsonic so you don't get the sonic crack down range. Although you can get 147gr 9mm that suppresses nicely. The real benifit to suppressors isn't that they "silence" a gun, they just eliminate the need for ear pro making it more confortable and fun to shoot. I really like shooting suppressed simply because of you are "dirt shooting", you can shoot without attracting a lot of attention and again, don't need ear pro. For tactical purposes, shooting with a can eliminates the flash of the shot protecting the shooters position. Sadly, many SWAT officers get permamnet hearing damage because the employ short entry guns in enclosed spaces. Their departments won't let them use cans because they aren't politically correct. It sucks because shooting an SBR in a small space will trash an officers hearing for life. Some departments get it and have a genuine concern for their officers well being. But many departments are more concerned with appearences than the health of their officers.