Reloading the gun actually sets my mind at ease and seems to calm my nerves. I know what I have to do and it will actually be faster if I do it methodically and not rush. This also gives the deer time to expire. I have never timed myself, but I would believe it us under 30-40 seconds to reload.
That said, I have used a followup shot twice. First time, I made a kill, reloaded and was able to get a shot at a second doe. Unfortuntaley, I missed.
2nd time, I pulled the trigger on the gun and saw fireworks come out the end of the barrel. I had left the gun inside after a very cold Michigan winter evening hunt. Condensation got into the powder. I was able to reload and the deer actually came back to the area. I was able to take her on the second shot.
I plan on one shot accuracy. Having the ability for a quick followup shot is nice, but not something I will base my entire setup on.