I've found that when animals run a long distance after being hit - by anything, ML or modern, do so only because they are pushed or chased, ie; "catching glimses every now and then".
: We make it a point to sit down immediatley after watching the animal for as far as it is visible- to visualize direction of travel. We wait for at least 10-15 min,(hard to do by excited hunters) before tracking, and have yet to have to track from more than 75 yards after a well hit animal. Double lung shots are the only ones we take, and refusing to take 'chance' shots, makes for short tracking distances.
: The longest distance tracking for a double lung hit was a bull elk which ran 75yds. Bull moose rarely going more than 50yds before laying down to bleed out. Most animals are within 30yds. when shot with .50RB's or larger.
: Slugs, from large bore rifles usually kill slower than round balls- possibly due to lower impact velocities or merely nose shape. The hemisphere is a 'perfect' shape for delivering a "Smashing Blow", as Forsyth would say.