Edit: re-timing my stuff. I explained it better on the description of my Red Brass Any% run.

Used OCM's route. Lost a bit of time messing around with the item menu and hugging the wall next to where Miller is held captive. Also I timed my LiveSplit earlier, the run starts after the 'tutorial'.

00:08.301 - Run starts/ Load 1 starts (cutscene fade in) 00:16.167 - Load 1 resume (last dark frame) 01:27.151 - Load 2 starts (iDroid screen closes) 01:31.918 - Load 2 resume (last dark frame) 01:47.951 - Load 3 starts (cutscene starts) 01:50.918 - Load 3 resume (last dark frame) 02:42.951 - Run ends (chopper door closes)

If there's something wrong with my timing I'll fix it as soon as possible.