Do I help the wheel align after reloading?

[vmaam]

When I load my S&W 642, I have a habit of moving the wheel until it clicks. Do I need to do this? What if it doesn't align properly? Does it cause a shorter trigger pull?

 

[Coolray]

I have always rolled the cylinder after closing it is just a habit I have.
I have also just pulled the trigger I feel it is just a choice the Headspace and timing are controlled within the gun and not weather you move the Cylinder until it clicks

 

[Mike Irwin]

Doesn't really matter in the least little bit.

 

[9mmepiphany]

it doesn't really matter

you do not need to do this. as you pull the trigger, the hand/pawl raises and rotates the cylinder...same trigger stroke.

if the chamber really doesn't align, you get a "click ". if it's just good enough for ignition, you'll get "spitting" as lead shaves when the bullet makes the jump into the barrel.