All the munties I have shot to date have dropped to the shot and been pretty much dead as they hit the floor, but last night was the 1st time I felt I needed a follow up shot to be certain.
I had a young doe moving towards me straight on so had to keep adjusting my position and when she finally moved side on I gave a shout to halt her, but rushed the shot a tad. She dropped straight down but I thought it was not quite perfectly placed, reloaded and waited to make sure. I noted a leg still moving slightly, wasn't sure if it was movement from the nerves and moments later she did a flip like a fish out of water. I moved slightly closer which enabled me to see her head clearly laying on the floor and I was able to take a clean head shot to be sure.
On inspection the shot was only marginally off which had missed the heart and taken out a lung so she would have expired soon enough but I was pleased with the way I dealt with her just in case!
It's quite unusual for me to be able to offer advice but to any new or novice stalkers like me (or old timers too I guess), please make sure you take your time to observe the deer you have just shot before moving in, even if it has dropped on the spot as it may not be quite as dead as you think!