Thank for the answers.
I know that the correct procedure is reload right barrel ASAP but I like to know what happen if you can not becuase circunstances (I just invented those).
I ask because I have a muzzleloading BR and I do not want to reload because I have to take primer out of the nipple (left barrel) wile reloading R barrel.
I will have to make some more range investigations about how the rifle shots each barrel. Some time ago I try it but barrels cross too much.
Thanks
Martin