Marksman or Bowmaster

You were probably calculating snipe wrong before. Were you taking the .72 seconds for the snipe arrow to actually fire into account, or just the 10 second cooldown. Snipe isn't 6 arrows per minute (.1 per second), its 5.597 per minute (~.09328 per second)

Oh whoops, lol. What I did (now that you mention it) was pretend Snipe didn't fire at all. Like... I had 83.33 Strafes AND 6 Snipes per minute. Marksmen can't shoot 89.333 projectiles a minute... I'm gonna fix that now.

Edit: Fix'd. I'll post it here.

Marksman
Damage Range: 4897 ~ 5999
DPS without Snipe: 56038
DPS w/10-second Snipe: 72003 (impossible according to Technolink)
DPS w/10.72-second Snipe: 70660
DPS w/11-second Snipe: 70185
DPS w/12-second Snipe: 68670

Bowmaster
Damage Range: 4532 ~ 5549
DPS: 76175
DPS w/26-attack Concentrate: 84600
DPS w/19-attack average*: 80383

 Technolink

Here's the formula I put in the excel sheet for the final DPS.
=INT(INT($C$32*4*((2000/24)-6)/60)+J33)
C32 is INT(average damage per arrow)
J33 is the DPS of just Snipe

In J33 I have this formula...
=199999*(60/J32)/60
And J32 is the number of seconds it takes to fire the Snipe. That's why it's so easy for me to adjust it and come up with another DPS instantly.