Here are some of my recent "Speedy" set-ups.......See if you can detect a pattern.

2001 BowTech Pro38 Dual Cam (still the most shootabe speed bow I've ever owned)
At 30.25"/70# and 350grs it would shoot 336fps with a string loop and leeches. Accuracy? I shot a 6 end Vegas spot target for giggles one night and shot 18X's for 18 arrows. That bow was DEADLY. [:-] 475gr arrows were still doing 290fps. I actually hunted with 375gr arrows doing 327fps.
I still miss it immensely. If you want an unreal accurate powerful bow find one, I see them on Ebay now and then.

2001 BowTech "Mighty Mite".........318fps 30"/70# /350gr arrow......string loop, peep and leeches. Deer whackin' machine.

2003 BowTech 'Pro40 Dually'..........285fps. No big deal right? Well that was at 30"/58# and a 378gr arrow! That's almost 90grs OVER IBO legal arrow weight at 58# draw weight.[:-] 3d set-up.

2003 BowTech Patriot Dually...........318fps at 30.25"/70# and 375gr arrow. With loop, 2 tied in nock sets,peep, leeches on the string. And almost an 8" brace height.

My 2004 BowTech Liberty is practially lobbing arrows out there compared to those bows! I figure I'll only be doing about 284fps or so with my 400gr A/C/C 3-60's. Oh the horror!