Now that I'm looking at suppressors for my 300 BLK, I was wondering how they work. It's much cooler seeing how they function than reading or listening to someone explain it.
Those are older baffle designs. Newer stuff more dramatically employs Tesla valve principals to slow the gas flow even more. Silencercco's tech videos on youtube are really cool. The clips in baffles basically makes a secondary jet that flows across the bore axis to flow faster to a spot 180 from the clip, the pressure then has to flow back around the baffle cone to get through the bore after the pressure drops from the cross jetting. Makes cans really quiet, and because of the volume and area of a circle, a shorter fat can will flow slower than a long skinny one of similar internal volume. Add in opposing pressure ports that slow the cross jet at the first high pressure wave, and you get lower initial backpressure before the flow slows down from the cross jetting, so that quiet can has less backpressure, and can self-adjust flow rates to allow faster flow and less backpressure with higher gas pressures and volumes while still allowing relatively high backpressure and good performance in slower subsonic loads.