diff --git a/data/json/items/gun/4570.json b/data/json/items/gun/4570.json
index 78dc9f7eaa09f..290fcd26fa857 100644
--- a/data/json/items/gun/4570.json
+++ b/data/json/items/gun/4570.json
@@ -6,8 +6,8 @@
     "type": "GUN",
     "name": { "str": "Marlin 1895 SBL" },
     "description": "A handy but powerful lever-action rifle chambered for .45-70 Government.  Designed for wilderness guides for defense against large predators such as grizzly bears, moose, and dinosaurs.",
-    "weight": "3650 g",
-    "volume": "2250 ml",
+    "weight": "3629 g",
+    "volume": "1829 ml",
     "price": 100000,
     "price_postapoc": 2500,
     "to_hit": 1,
@@ -18,7 +18,7 @@
     "ammo": [ "4570" ],
     "dispersion": 200,
     "durability": 8,
-    "clip_size": 7,
+    "clip_size": 6,
     "valid_mod_locations": [
       [ "accessories", 4 ],
       [ "brass catcher", 1 ],
@@ -39,9 +39,10 @@
     "looks_like": "sw_619",
     "type": "GUN",
     "name": { "str": "Magnum Research BFR" },
+    "//": "This is the 7.5in barrel model",
     "description": "A massive single-action revolver.  While the .45-70 rifle round loses significant velocity in its short pistol barrel, it still competes with other large magnum handguns in terms of power.",
     "weight": "1950 g",
-    "volume": "1 L",
+    "volume": "734 ml",
     "price": 105000,
     "price_postapoc": 2750,
     "to_hit": -2,
@@ -71,9 +72,10 @@
     "looks_like": "ar15",
     "type": "GUN",
     "name": { "str_sp": "1874 Sharps" },
+    "//": "Specs from Uberti 32in barrel Special",
     "description": "A reproduction of an antique single-shot .45-70 rifle once used to hunt buffalo and other large game in the late 19th Century.  Highly accurate and powerful for the time, this one is made to handle modern smokeless ammunition.",
-    "weight": "5000 g",
-    "volume": "3250 ml",
+    "weight": "4819 g",
+    "volume": "3053 ml",
     "price": 210000,
     "price_postapoc": 2750,
     "to_hit": 1,