maybe fixes?

Author: Killermankey

code/__DEFINES/mecha.dm

@@ -58,5 +58,5 @@
 #define MECHA_AMMO_PIPEGUN "Improvised shell"
 #define MECHA_AMMO_PEASHOOTER "Peashooter bullet"
 #define MECHA_AMMO_ISG "IED grenades"
-#define MECHA_AMMO_MISSILE_LIGHTTANKSHELL "40mm shell"
+#define MECHA_AMMO_LIGHTTANKSHELL "40mm shell"
 //monke edit end

monkestation/code/game/mecha/makeshift/makeshift_tools.dm

@@ -113,11 +113,10 @@
 	desc = "a multi hundred year old cannon, it looks overbuilt but you can't shake that worrying feeling."
 	icon_state = "mecha_light_tank_cannon"
 	harmful = TRUE
-	ammo_type = MECHA_AMMO_MISSILE_LIGHTTANKSHELL
+	ammo_type = MECHA_AMMO_LIGHTTANKSHELL
 	mech_flags = EXOSUIT_MODULE_DEVITT
 	equip_cooldown = 60
 	projectile = /obj/projectile/bullet/rocket/lighttankshell
-	equip_cooldown = 8 SECONDS
 	projectiles = 1
 	projectiles_cache = 5
 	projectiles_cache_max = 35