tremolo

Hey guys I have a centerfire Pse firestorm lite with an ibo rating of 300 fps. I had it chronographed at 220 that with three shots. Im just wondering if this is a respectible speed for a bow rated at 300 fps. I know that a bow setup for hunting will not shoot ibo speeds but 80 fps slower seems like quite a drop.

Here is my setup:
Pse firestorm lite
60#s maxed out and 29" draw
String leeches
peep sight (tubed type)
string loop with a brass knock next to it
terminator hunters 4560 with 100 gr. tip (total weight 463gr.)
doinker D2 4"
Release

im getting about 49.77lbs. on eastons Ke calc. Id like to increase this too if i could. I am thinking about getting a little lighter arrow maybe goldtips, change the peep to a tubeless type, and if you guys say i dont need a knock next to the string loop i will get rid of that too. the loop doesnt look like it is going to move with it there.

thanks
vince