diff --git a/code/__HELPERS/_lists.dm b/code/__HELPERS/_lists.dm
index 8e44b57396..f16b566b00 100644
--- a/code/__HELPERS/_lists.dm
+++ b/code/__HELPERS/_lists.dm
@@ -174,6 +174,15 @@
 						L[T] = TRUE
 		return L
 
+/proc/typecacheof_assoc_list(list/pathlist, ignore_root_path = FALSE)
+	. = list()
+	if(!istype(pathlist))
+		return
+	for(var/P in pathlist)
+		var/value = pathlist[P]
+		for(var/T in (ignore_root_path ? subtypesof(P) : typesof(P)))
+			.[T] = value
+
 //Empties the list by setting the length to 0. Hopefully the elements get garbage collected
 /proc/clearlist(list/list)
 	if(istype(list))
@@ -579,4 +588,4 @@
 	var/list/ret = list()
 	for(var/key in input)
 		ret += key
-	return ret
\ No newline at end of file
+	return ret
diff --git a/code/modules/holodeck/area_copy.dm b/code/modules/holodeck/area_copy.dm
index 8fa0825628..9fb97c08a7 100644
--- a/code/modules/holodeck/area_copy.dm
+++ b/code/modules/holodeck/area_copy.dm
@@ -4,6 +4,10 @@ GLOBAL_LIST_INIT(duplicate_forbidden_vars,list(
 	"power_supply", "contents", "reagents", "stat", "x", "y", "z", "group", "atmos_adjacent_turfs", "comp_lookup"
 	))
 
+GLOBAL_LIST_INIT(duplicate_forbidden_vars_by_type, typecacheof_assoc_list(list(
+	/obj/item/gun/energy = "ammo_type"
+	)))
+
 /proc/DuplicateObject(atom/original, perfectcopy = TRUE, sameloc = FALSE, atom/newloc = null, nerf = FALSE, holoitem=FALSE)
 	RETURN_TYPE(original.type)
 	if(!original)
@@ -16,7 +20,7 @@ GLOBAL_LIST_INIT(duplicate_forbidden_vars,list(
 		O = new original.type(newloc)
 
 	if(perfectcopy && O && original)
-		for(var/V in original.vars - GLOB.duplicate_forbidden_vars)
+		for(var/V in original.vars - GLOB.duplicate_forbidden_vars - GLOB.duplicate_forbidden_vars_by_type[O.type])
 			if(islist(original.vars[V]))
 				var/list/L = original.vars[V]
 				O.vars[V] = L.Copy()
diff --git a/code/modules/projectiles/guns/energy.dm b/code/modules/projectiles/guns/energy.dm
index 401678512b..be43bc48fd 100644
--- a/code/modules/projectiles/guns/energy.dm
+++ b/code/modules/projectiles/guns/energy.dm
@@ -67,8 +67,7 @@
 /obj/item/gun/energy/Destroy()
 	if(flags_1 & INITIALIZED_1)
 		QDEL_NULL(cell)
-		if(!(flags_1 & HOLOGRAM_1)) //holodeck stuff.
-			QDEL_LIST(ammo_type)
+		QDEL_LIST(ammo_type)
 		STOP_PROCESSING(SSobj, src)
 	return ..()