FX crown continum MK2 double barrels

Which one to use depends upon what type of a tune you want to use with your rifle. If you are planning to tune for slugs and will use a high reg pressure with lots of hammer tension for a lot of air flow then use the ”S” port. That means the “S” port will be facing down when installed. If on the other hand you want to have an air efficient pellet tune which requires less reg pressure and less hammer tension then use the “P” port. Hope that helps.
Kenny
 
  • Like
Reactions: Maarodigro
If you have the superior liner then it will handle pellets and lighter to medium weight slugs well. You’ll most likely need a superior heavy liner to push really heavy slugs well. The Crown power level is better suited for light to medium slugs anyway so a regular superior liner will do you well. My Crown mk2 .22 with a superior liner does great with the NSA 24.8 grain slug.
Kenny