Not sure how "scientific" this is, but just measured the gap between the bolt handle and bolt body using a stack of index cards, and took my measurements with the bolt cocked. With the bolt raised to just before it engages the ramp on the rear baffle I got a gap measurement of 0.046". With the bolt fully up and while pushing the bolt forward via the BAS, the gap measures 0.101". Subtracting the two gives me 0.055" of P.E. on this action that was made in 2009.

Using the same process on the January 2017 production Model 10 Stealth I have in for review I get measurements of 0.037" and 0.084" for 0.047" of P.E.

Each index card is 0.0095" thick so there's a little wiggle room in those numbers.