Rerun your test with a properly torqued assembly bolt. Also test it in the stock with one or two hard strikes (which matter more as safety should be on most of the time).
I can beat on mine with a 24 oz rubber mallet without it dropping the firing pin with safety off. Multiple 4+ foot drops onto concret butt first will cause the firing pin to drop if the safety is off.
SAAMI drop test standard specifies "safe carrying condition" which would be safety on for a Tikka (the condition in which it is designed to be safely carried). NATO/Mil-STD also specify safety on. SAAMI is a 4 foot drop. Mil is a 4.9 foot drop on concret.
I had to double check as I actually though safety off was specified for some reason.
Good reminder of why safeties should be used if the firearm is not designed for "safe carry" without one.
