In most of these scenarios, I'm not sure it is even useful to know the exact speed. It is what it is . . . . . Just set the bow up right, get all your pins set for distances, and practice good shot placement. Just about everyone I know who gets curious about speed has just had someone tell them that their bow is going 288 fps with a certain arrow. Now we have to know what our bow is going in fps . . . . The kind of stuff that campfire chest thumping is all about.

Then, feeling inadequate, you wind up either shooting a lighter arrow or cranking the bow's draw weight up to where it's a strain.

Having said that, I think Swamp Collie's estimate is about right.