This is a very good question. WMAs follow different rules. I am pretty sure you are good to go with a handgun if you have a weapons permit, but not sure about a long gun.
Rosewood
Can only hold 2+1 for birds and small game. Regs specifically says plug cannot be removable from the breech end of the gun (so you are less likely to remove or install in the field). If you gun will hold more than that, regardless of if you have it loaded, you can be fined.
Rosewood