I shot a couple POS (EOM) HARMs at some steerpoints. I shot one showing 3:00 PTOF and 2:00 PTOF. Threat type was set other than the threat so it would not do anything but plow into the ground at the steerpoint. HARMs were fired ~20,000 level with zero relative bearing and the FPM in the middle of the upper and lower tick marks.
Notes:
“3 minute” HARM 05:58:04 impacted 06:00:12, 1:46 TOF.
“2 minute” HARM 05:59:46 impacted 06:01:23, 1:38 TOF.
Post launch countdown TUI (EOM or PB) was not a simple timer but adjusted not smoothly and not 1-second per second. TUI also reached 0:00 to coincide with actual impact.
Missiles destructed 160s (not 200s per 4.32) after launch.
To a large degree it feels like things have been scaled by the max TOF duration. The “3:20 (200s)” PTOF seems to correspond to almost exactly 2:40 (160s) actual TOF at least at max range. 160/200ths is 4/5ths or 80%. 80% of 2 minutes is 1:36. Notice the initial 2:00 test ended up 1:38 TOF. 80% 3:00 is 2:24. I ran the “3 minute” test again and got 2:11 which isn’t too far from 2:24. I recommend reducing all shown TOFs to 80% value as best guess for now.