Harrisburg falls under IBO regs that don't have speed limitations, you just need to keep it above 5gpp which I am 15 grains over. ASA events are a different story though and havea 280fps speed max +/- 3% for differences in chronos so you actually have a limit of 288.

The only reason I am using this setup is because my 3D bow is still on order and waiting to be built at the factory, so this Slayer is a borrowed bow so I can still shoot in Harrisburg. The Slayers are quick, but at my draw length I really don't need the speed of a slayer.......it's just what I have now and I am simply using the arrows I have already made up for 3D. It does shoot OK though, I shot a 299 40+X 5 spot target last night with it at way over 300fps, a pins sight, and my 3D arrows.

When my bow on order gets here it is about 10-15fpsslower at the same specs and has almost an extra inch of brace height so its a bit more forgiving.