After reloading, the character seems to freeze up and the player cannot take any action except movement. I've seen this period last 3-4 seconds on occasion, and during it you cannot access your PipBoy, fire the weapon or access iron sights. Obviously this is pretty detrimental when fighting certain things that may or may not be bearing down on you at 40 MPH that may or may not nearly one-shot you and precious seconds like those matter very dearly.
I'm going to try to keep track of a list of weapons confirmed to suffer from this issue. For reference I've tested and cannot find any perk or stat that seems to directly cause the issue (for example it happens with and without Rapid Reload, and will occur with both very low and very high AGI).
Please post in this thread if you are experiencing this issue and list the weapons you have verified to be affected.
Current list:
.357 Revolver
Hunting Shotgun
Grenade Launcher