Adjust integral volume for several gunmods (#3158)

data/json/items/gunmod/accessories.json

@@ -23,6 +23,7 @@
     "description": "A counterweight placed forward of the bow's grip allows for greater accuracy.  Aside from increased weight and size, there are no drawbacks.",
     "weight": "88 g",
     "volume": "500 ml",
+    "integral_volume": "400 ml",
     "price": 4000,
     "price_postapoc": 500,
     "material": [ "aluminum", "plastic" ],
@@ -39,6 +40,7 @@
     "description": "A set of three stabilizing, dampened rods with a spring-loaded bracket to mount on modern bows.  Takes extra time to set up when wielding, but doesn't take much extra space.",
     "weight": "300 g",
     "volume": "500 ml",
+    "integral_volume": "400 ml",
     "price": 15000,
     "price_postapoc": 750,
     "material": [ "aluminum", "plastic" ],
@@ -56,6 +58,7 @@
     "description": "A set of simple pads and strips of fur or rubber with adhesive backing, designed to stick on the limbs and string of a bow to absorb vibrations.  This substantially reduces noise during firing and can help with accuracy.",
     "weight": "50 g",
     "volume": "250 ml",
+    "integral_volume": "0 ml",
     "price": 500,
     "price_postapoc": 250,
     "material": [ "plastic" ],

data/json/items/gunmod/brass_catcher.json

@@ -6,6 +6,7 @@
     "description": "A bag that hangs off the side of your gun and catches ejected casings so you don't have to pick them up.",
     "weight": "114 g",
     "volume": "250 ml",
+    "integral_volume": "50 ml",
     "price": 2000,
     "price_postapoc": 50,
     "material": [ "cotton" ],

data/json/items/gunmod/loading_port.json

@@ -6,7 +6,7 @@
     "description": "A metal ramp that is installed near a shotgun's feeding port to index speedloader tubes.",
     "weight": "135 g",
     "volume": "149 ml",
-    "integral_volume": "149 ml",
+    "integral_volume": "50 ml",
     "price": 15700,
     "price_postapoc": 250,
     "install_time": "8 m",

data/json/items/gunmod/rail.json

@@ -81,6 +81,7 @@
     "description": "An additional rail set at 45° for attaching a secondary optic.",
     "weight": "40 g",
     "volume": "125 ml",
+    "integral_volume": "25 ml",
     "price": 6000,
     "price_postapoc": 500,
     "material": [ "steel" ],

data/json/items/gunmod/sights.json

@@ -62,6 +62,7 @@
     "description": "Used extensively by military forces, it increases accuracy and weight.  This is a step up from a red dot sight.",
     "weight": "255 g",
     "volume": "335 ml",
+    "integral_volume": "200 ml",
     "price": 68000,
     "price_postapoc": 750,
     "material": [ "plastic", "steel" ],
@@ -126,6 +127,7 @@
     "description": "A small scope intended for use on a handgun.  Increases weight but improves accuracy greatly.",
     "weight": "212 g",
     "volume": "250 ml",
+    "integral_volume": "200 ml",
     "price": 54000,
     "price_postapoc": 500,
     "material": [ "aluminum", "glass" ],
@@ -177,6 +179,7 @@
     "description": "A 3-18x44 rifle scope.  It is adjustable for windage and elevation in 1/10th mrad increments and is remarkably small and light for its magnification.",
     "weight": "669 g",
     "volume": "435 ml",
+    "integral_volume": "400 ml",
     "price": 68000,
     "price_postapoc": 750,
     "material": [ "aluminum", "glass" ],
@@ -221,6 +224,7 @@
     "description": "A 4x32 TA01 Advanced Combat Optical Gunsight with a tritium illuminated crosshair.",
     "weight": "280 g",
     "volume": "112 ml",
+    "integral_volume": "50 ml",
     "price": 68000,
     "price_postapoc": 750,
     "material": [ "aluminum", "glass" ],
@@ -279,6 +283,7 @@
     "description": "A simple hand-crafted telescopic sight, essentially a small telescope with crosshairs.  Not as good as the ones made before the Cataclysm.  Increases weight but improves accuracy.",
     "weight": "300 g",
     "volume": "250 ml",
+    "integral_volume": "200 ml",
     "price": 30000,
     "price_postapoc": 250,
     "material": [ "plastic", "steel", "glass" ],
@@ -307,6 +312,7 @@
     "description": "A simple telescopic sight intended for use on a handgun.  Increases weight but improves accuracy greatly.",
     "weight": "220 g",
     "volume": "250 ml",
+    "integral_volume": "200 ml",
     "price": 27000,
     "price_postapoc": 500,
     "material": [ "plastic", "steel", "glass" ],

data/json/items/gunmod/sling.json

@@ -6,7 +6,7 @@
     "description": "A shoulder strap allows the rifle to be worn over your shoulders like a piece of clothing.  However, it offers no protection.",
     "weight": "100 g",
     "volume": "250 ml",
-    "integral_volume": "250 ml",
+    "integral_volume": "100 ml",
     "price": 480,
     "price_postapoc": 10,
     "material": "cotton",