If it makes a difference, bindings are Salomon STH Driver 14, my boots are Salomon Impact 120, my dad's boots are Rossignol (not sure on the model).
Edited by Sh4d0w - 4/6/14 at 2:18pm
Like a few mentioned above, I had been skiing Nordica Firearrows all season at a 305mm bsl, and tried a narrower Tecnica Inferno later in the season, which was also a 305mm bsl. I was surprised when the forward pressure adjustment wasn't correct when I stepped in with the Tecnicas. I was even more surprised when it took not just a turn or two, but several turns amounting to several millimeters, to get the forward pressure correct again. Same deal for various binding makes. I figured it just had something to do with the shape of the shell of the boot and how it interfaced with the bindings. But after measuring the actual boot lengths, the Nordica was pretty close to the stated 305mm, but the Tecnica was closer to a 302, even though it was marked as 305.