diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonDetector.java b/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonDetector.java
index 09893fd5..3ab4fe70 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonDetector.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonDetector.java
@@ -28,28 +28,29 @@ import de.steamwar.linkage.Linked;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.TNTPrimed;
 import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.entity.EntityExplodeEvent;
 import org.bukkit.util.Vector;
 
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.stream.Collectors;
 
 @Linked
 public class CannonDetector implements Listener {
 
     private Map<TNTPrimed, Vector> velocities = new HashMap<>();
+    private Map<TNTPrimed, Set<UUID>> propulsionOfProjectile = new HashMap<>();
 
-    @EventHandler
+    @EventHandler(priority = EventPriority.LOW)
     public void onEntityExplode(EntityExplodeEvent event) {
         if (!(event.getEntity() instanceof TNTPrimed)) {
             return;
         }
 
         TNTPrimed tnt = (TNTPrimed) event.getEntity();
+        propulsionOfProjectile.remove(tnt);
+
         DepthManager.update(tnt, event.blockList());
 
         List<TNTPrimed> tnts = Bukkit.getWorlds().get(0).getEntitiesByClass(TNTPrimed.class)
@@ -66,6 +67,7 @@ public class CannonDetector implements Listener {
         boolean isEmpty = velocities.isEmpty();
         tnts.forEach(tntPrimed -> {
             velocities.put(tntPrimed, tntPrimed.getVelocity().clone());
+            propulsionOfProjectile.computeIfAbsent(tntPrimed, __ -> new HashSet<>()).add(tnt.getUniqueId());
         });
 
         if (!isEmpty) {
@@ -75,7 +77,10 @@ public class CannonDetector implements Listener {
         BauSystem.runTaskLater(BauSystem.getInstance(), () -> {
             Map<CannonKey, List<TNTPrimed>> grouped = new HashMap<>();
             velocities.forEach((tntPrimed, vector) -> {
-                grouped.computeIfAbsent(new CannonKey(round(tntPrimed.getLocation().toVector()), round(vector)), ignored -> new ArrayList<>()).add(tntPrimed);
+                boolean xBiggest = Math.abs(vector.getX()) > Math.abs(vector.getZ());
+                boolean zBiggest = Math.abs(vector.getZ()) > Math.abs(vector.getX());
+                Vector vec = new Vector(xBiggest ? Math.signum(vector.getX()) : 0, Math.round(vector.getY() * 100), zBiggest ? Math.signum(vector.getZ()) : 0);
+                grouped.computeIfAbsent(new CannonKey(propulsionOfProjectile.get(tntPrimed), vec), ignored -> new ArrayList<>()).add(tntPrimed);
             });
             grouped.forEach((cannonKey, tntPrimeds) -> {
                 if (tntPrimeds.size() <= 5) return;
@@ -88,12 +93,4 @@ public class CannonDetector implements Listener {
             velocities.clear();
         }, 1);
     }
-
-    private Vector round(Vector vector) {
-        vector.multiply(10000);
-        vector.setX(Math.round(vector.getX()));
-        vector.setY(Math.round(vector.getY()));
-        vector.setZ(Math.round(vector.getZ()));
-        return vector;
-    }
 }
diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonKey.java b/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonKey.java
index 73270eab..c260e8a9 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonKey.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/CannonKey.java
@@ -22,12 +22,16 @@ package de.steamwar.bausystem.features.cannon;
 import lombok.AllArgsConstructor;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
+import org.bukkit.entity.TNTPrimed;
 import org.bukkit.util.Vector;
 
+import java.util.Set;
+import java.util.UUID;
+
 @AllArgsConstructor
 @EqualsAndHashCode
 @Getter
 public final class CannonKey {
-    private Vector locationVector;
+    private Set<UUID> propulsions;
     private Vector velocityVector;
 }
diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/depth/Depth.java b/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/depth/Depth.java
index 506b6e93..a13d6250 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/depth/Depth.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/cannon/depth/Depth.java
@@ -51,7 +51,6 @@ public class Depth {
         List<Block> blocksList = blocks.stream()
                 .filter(block -> region.inRegion(block.getLocation(), RegionType.TESTBLOCK, RegionExtensionType.EXTENSION))
                 .collect(Collectors.toList());
-        if (blocksList.isEmpty()) return;
         tntCount++;
         for (Block block : blocksList) {
             internalUpdate(block);