All I do is lung shots firearm or archery. Archery, they usually flinch like they got bit, you get the wet paper bag sound, they walk or trot off and fall within 40 yards. I usually listen for their path and crash, then get up and go get them.
All i TRY to do is lung shots too. Running i may be off a bit.
Huge buck running away gets a Texas heart shot.
Alert bull elk standing behind a big tree trunk with other closer trees blocking a forward shot but i had a rest and a 300 Rum at the base of his tail put him down right there. He crawled a bit before getting another 180 gr Siccoro hit.