My common sense is failing me. Do tell. How can the firing pin possibly travel further than from the top detent to the bottom of the ramp (or the back of the bolt head)? It can surely travel less, if the primer is in the way, but I don't see how it can travel more. If you're worried about your trade secrets, get a patent.

As for Otteson's numbers, they seem to jive just fine w what RWO and I have measured on our individual actions. Measuring the spring rate is easy enough. Measuring compressed & relaxed lengths is easy enough. Allowing for sear friction/resistance is easy enough because it's almost negligible in relation to the amount of energy in the mainspring (which is one key omission Otteson makes and clearly states). The same can be said for friction elements between the firing pin and surrounding parts as well. I fail to see how Otteson, RWO, and I are so far off.