British Army used the top breaking Webley between the 1880's and up to 1950's, without that problem.
I have experience from both the Webley and the Peacemaker, used to shoot them quite a bit in the okd days in Sweden.
I found personally that reloading a top breaker is by far the fastest revolver to reload.
Have you any experience shooting either from the back of a galloping horse? Before you ask, neither have I. It would be fun to give it a try though!