After having a rifle with a tight neck chamber and developing a carbon ring, I am more paranoid about that. I pay more attention to the neck area not having any build up.
I always use a bronze brush to reduce the chance of getting a carbon ring. when you are at the range and all of a sudden you can't chamber a round and your scratching your head WTF is going on you get home start measuring your ammo and its all good. then you have a carbon ring time to use that bronze brush because that patch with solvent won't help you unless you break it free with a brush.
in my experience A bronze brush works better then nylon brushes.