Cougar!

I'm guessing that's your IBO, mine is 332 to 340fps ,but after you get everything added to your bow and string you'll lose at least 30fps [approx]everything you add to your string such as leach's ,peep andnock set ,you'll lose about 10fps each ,there's also much more to take into consideration when trying to calculate your final arrow speed such as your arrow weight and draw length as well .Most bow's are tested with a 30" arrow so if your draw length is shorter than that you'll also lose speed from your IBO,plus the loss of speed from your string leach's ,nock setand peep. I'm still shooting 290+ ,but as you can see my draw length is only 28" so I lose 2" there and then I lose from my peep ,string silencer's and nock set as well.(I'm not real clear on how to calculate all of these component's in order to figure out your final FPS but there is a way you can do it .
I'm sure you can pick up either of these sight's for under 50.00 U.S. off of e-bay.

nubo

nubo