A script that allows for a plus ahem... ONE in the chamber for weapons that can chamber a round IRL.
Affected weapons are pretty much anything that has a closed bolt
2.5 Update: Now requires WeaponLib
The script is now over there. This now only gives the +1/2 tweakdata for the vanilla weapons because weaponlib doesn't do that by default.
To other modders:
You can create support for this mod by adding the following into the "weapon id" section (alongside "based_on", "global_value", etc.) of your weapon's main.xml
tactical_reload="1" (or 2 if akimbo)
or including a script hooked to "lib/tweak_data/weapontweakdata" that contains the following: