diff --git a/data/json/items/gun/380.json b/data/json/items/gun/380.json
index 26bdddf2ee362..1a80fdffa9453 100644
--- a/data/json/items/gun/380.json
+++ b/data/json/items/gun/380.json
@@ -32,7 +32,8 @@
     "name": { "str": "Kel-Tec P3AT" },
     "description": "Essentially a slightly scaled up Kel-tec P32 in .380 ACP, the ever popular P3AT offers better ballistics in a small, concealable lightweight package.  Handling leaves something to be desired due to snappier recoil and diminuitive controls.",
     "weight": "218 g",
-    "volume": "151ml",
+    "volume": "163 ml",
+    "longest_side": "150 mm",
     "price": 25000,
     "price_postapoc": 1750,
     "ammo": [ "380" ],
@@ -56,7 +57,8 @@
     "name": { "str": "FN 1910 .380" },
     "description": "Made infamous in Sarajevo in 1914, the FN1910 was a popular pocket pistol, albeit in .32 ACP.  Collectors value the .380 model for its notoriety and more modern terminal performance.  If such a humble firearm could start a world war, could it perhaps protect you from the undead?",
     "weight": "590 g",
-    "volume": "186ml",
+    "volume": "136 ml",
+    "longest_side": "173 mm",
     "price": 75000,
     "price_postapoc": 1250,
     "to_hit": -3,
@@ -117,7 +119,8 @@
     "name": { "str": "Hi-Point CF-380" },
     "description": "The Hi-Point CF-380 is a blowback operated semi-automatic pistol designed by Hi-Point Firearms, which is known for making inexpensive firearms, and for making said firearms bulky and uncomfortable.  Hi-Points have slides made with a zinc pot-metal which is relatively fragile compared to steel slides.",
     "weight": "820 g",
-    "volume": "539 ml",
+    "volume": "478 ml",
+    "longest_side": "200 mm",
     "price": 7500,
     "price_postapoc": 1750,
     "to_hit": -2,
@@ -147,6 +150,7 @@
     "description": "A .380 subcompact pistol.  Designed for concealed carry and built from high-quality, durable materials.",
     "weight": "283 g",
     "volume": "187 ml",
+    "longest_side": "154 mm",
     "price": 64000,
     "price_postapoc": 1250,
     "to_hit": -2,