diff --git a/addons/jam/dev_diagnoseMagWells.sqf b/addons/jam/dev_diagnoseMagWells.sqf
new file mode 100644
index 000000000..88ddc252e
--- /dev/null
+++ b/addons/jam/dev_diagnoseMagWells.sqf
@@ -0,0 +1,42 @@
+// ["vn_"] call compileScript ["\x\cba\addons\jam\dev_diagnoseMagWells.sqf"];
+
+params ["_prefix"];
+_prefix = toLower _prefix;
+private _prefixSize = count _prefix;
+
+private _cfgMagazines = configFile >> "CfgMagazines";
+private _cfgMagazineWells = configFile >> "CfgMagazineWells";
+private _weapons = "getNumber (_x >> 'scope') == 2" configClasses (configFile >> "CfgWeapons");
+{
+    private _weaponConfig = _x;
+    private _weapon = configName _weaponConfig;
+    if ((_weapon select [0, _prefixSize]) != _prefix) then { continue };
+
+    {
+        private _muzzle = _x;
+        private _muzzleConfig = _weaponConfig;
+        // diag_log text format ["%1 -> %2", _weapon, _muzzle];
+        if ((_muzzle != "this") && {_muzzle != _weapon}) then {_muzzleConfig = _weaponConfig >> _muzzle };
+        private _directMags = (getArray (_muzzleConfig >> "magazines")) apply {configName (configFile >> "CfgMagazines" >> _x)};
+        private _allMags = compatibleMagazines [_weapon, _muzzle];
+        private _cbaWellMags = [];
+        {
+            if ((_x select [0,3]) != "CBA") then { continue };
+            private _wellConfig = _cfgMagazineWells >> _x;
+            {
+                _cbaWellMags append getArray _x;
+            } forEach configProperties [_wellConfig, "isArray _x", false];
+        } forEach (getArray (_muzzleConfig >> "magazineWell"));
+        _cbaWellMags = _cbaWellMags select {isClass (_cfgMagazines >> _x)};
+        _cbaWellMags = _cbaWellMags apply {configName (_cfgMagazines >> _x)};
+
+        private _exlusiveCbaMags = _cbaWellMags - _directMags;
+        if (_exlusiveCbaMags isEqualTo []) then { continue };
+
+        private _weaponDisplay = _weapon;
+        if ((_muzzle != "this") && {_muzzle != _weapon}) then {_weaponDisplay = _weaponDisplay + format ["[%1]", _muzzle] };
+        diag_log text format ["%1 gained %2 mags through cba wells", _weaponDisplay, count _exlusiveCbaMags];
+        diag_log text format ["  Mags %1", _exlusiveCbaMags];
+        diag_log text format ["  Well %1", getArray (_muzzleConfig >> "magazineWell")];
+    } forEach getArray (_x >> "muzzles");
+} forEach _weapons;