I only carry 4 rounds in a Speed Strip [skip the first and last holes].
I do this for two reasons. One, I have a stiffer tab to manipulate the little things under stress and, Two, the differences in times and fumbled reloads is remarkable when you start playing with just 4 rounds in a strip.
Whatever your reload time is with a Speed Strip, regardless of whether you are reloading a 5 or 6 shot gun, you will, most likely, find a 50% decrease in overall reload time if you try the 4 rounds on a strip reload. It has to do with the precision required to place exactly one carridge in exactly one hole, or exactly 2 in exactly 2, under duress.
If I am having to reload a snub nosed revolver, in a fight, I'm having a very bad day and I want to get some ammo in and get the gun back in the fight as quickly as I can. For me, 4 rounds on a strip helps accomplish that goal.