So when you are loading the Mosin you can load 6 rounds into it, this is probably because the last round counts as chambered allowing you to load another round into it.
this is however not how it works in real life with bolt action rifles as the chambered round never
there could be two solutions to this that I can think of, either reduce the capacity of the mosin mags by 1
or remove the mechanic that makes chambered rounds disappear from the magazine containing the rounds with the mosin.
this might be a bit of a nitpicky report but I noticed it and cared to report it for realisms sake