One shot.
Like a lot, I grew through bb guns/.22's, .0-30s', .30-06's, .264 WinMag, .35Rems, all with huge Leupold scopes, etc...filled my tags and thought I was a deer hunter. Then got into muzzleloading and haven't touched the rest in years...using nothing but Flintlocks, iron sights, and patched balls now.
Big scopes and long range flat shooting rifles did that to me...I would sit over a beanfield or a powerline and shoot deer as far away as 250-300 yards... nothing to it with that equipment...they couldn't see me, they couldn't smell me, they couldn't hear me, etc...but if I could see them, they were dead....I wasn't a hunter, I was a shooter.
Once I set the big scoped high power rifles aside for sidelock muzzleloaders and couldn't hunt that way anymore, I realized I wasn't quite the deer hunter that I thought I was and had to completely, really learn how to hunt deer...had to find them, figure out where they went, how they got there, get in close with them, etc.
Muzzleloaders made me a deer hunter, and Flintlocks with iron sights have made me a far better shot than I was...a scope makes it too easy...using iron sights under various woods / lighting conditions forces good shooting techniques...and I shoot / practice with Flintlocks at the range almost every weekend year round.
With CF rifles, I always used to fill the magazines with as many cartiridges as they would hold, so I'd be sure to have plenty if I had to keep shooting...never needed five shells but by golly they were there just in case. But now, deer hunting with a flintlock (or any muzzleloader) the whole mentality of the hunt is one shot...period. And my personal feeling is that I've failed if I don't make it precise enough to put the deer down in it's tracks or at least within sight of my stand.
After the shot, I don't reach for some sort of speedloader and jack in another load...I take a good 10 minutes and completely clean, dry, lube the bore & flint lock assembly, then reload and quietly go fetch the deer. I won't take a shot unless I know without a doubt I am going to kill that deer...I wait for clearance, I wait for angle, I'll whistle stop a deer so it's a standing shot, and I go for the heart.
I find an active trail coming out of an overgrown clearcut or thicket, or a heavily used trail crossing a ditch down in a bottom somewhere...I set up 40-50yds off to the side and let them come to me. Not as interesting as still hunting but far more productive for me...during the rut last year I got two bucks 30 minutes apart right at first light as they were headed back to bed in an overgrown clearcut area...40-50yd shots.
Most enjoyable hunting experience for me any more is to take a buck up close with a Flintlock...I lay that rifle back down across my lap, smoke curling up out of the vent, a buck in the leaves 50yds out, and I get a feeling like: "this is how the settlers did it back in the day...a real piece of flint, real black powder, and a patched lead ball"