I just bought these in a size large but...
I just bought these in a size large but am skeptic that is the correct size for a size 10 boot..should i go smaller?
What boots are you running? Certain boots are on the smaller than others i.e. the Salomon F 20/22 and Burton park boots. But if not and you have 32's or DC you should be ok. I don't think you should worry about it. These bindings are awesome though.
You should be OK with a size 10 in large binders, but you're going to have the ladders on the last screw and probably have to ratchet them down all the way. You *might* want to try and fit them in some mediums, but by god, son, please take them to a shop where you can put the boot *in* the binding and see if it fits!
So many people have questions like yours, "I just bought such-and-such..."
david zemens you are my hero! get them in the shop so you can have someone who actually knows about snowboarding. I would of gone with the mediums