This is the standard 'weapon buffing' perk line for 1he Adventurers. The best difference between Pistol Mastery and Edged Mastery (at the time of this writing, and i'm sure it will be fixed soonish) is that the perk actions on Edged Mastery actually scale correctly. Expect about a 200-450 hit on "Quick Cut", a 900ish hit for "Flay", a 3000-4500 hit for "Flurry of Cuts" and a 3500-5000 hit on "Ribbon Flesh". These numbers are around what i'm hitting for at level 205. It also of course is going to depend on the AC of the mob you're fighting.

These perk actions will be resisted on mobs and players with high evades. You shouldn't have any problem landing them on a level 210 heckler though.

Important to note is that there is a required stacking order. "Flurry of Cuts" requires that "Limber" has been recently (VERY recently) run in your NCU. "Ribbon Flesh" requires that both "Dance of Fools" and "Flurry of Cuts" be recently run in your NCU. Thus, the best order is to run "Limber", then "Dance of Fools", then "Flurry of Cuts", then "Ribbon Flesh". This way, you can start "Dance of Fools" execution while "Limber" is already executing. Run "Flurry of Cuts" as "Limber" finishes. During that Execution, "Dance of Fools" will have finished executing and you can run "Ribbon Flesh".