diff --git a/core/assets/sounds/shootAltLong.ogg b/core/assets/sounds/shootAltLong.ogg
index f0936a6683..0ce2dbb719 100644
Binary files a/core/assets/sounds/shootAltLong.ogg and b/core/assets/sounds/shootAltLong.ogg differ
diff --git a/core/assets/sounds/shootReign.ogg b/core/assets/sounds/shootReign.ogg
new file mode 100644
index 0000000000..46aa4f4db1
Binary files /dev/null and b/core/assets/sounds/shootReign.ogg differ
diff --git a/core/src/mindustry/content/UnitTypes.java b/core/src/mindustry/content/UnitTypes.java
index a8745894a5..0bb01ab6f4 100644
--- a/core/src/mindustry/content/UnitTypes.java
+++ b/core/src/mindustry/content/UnitTypes.java
@@ -280,7 +280,7 @@ public class UnitTypes{
                 recoil = 5f;
                 shake = 2f;
                 ejectEffect = Fx.casing4;
-                shootSound = Sounds.bang;
+                shootSound = Sounds.shootReign;
 
                 bullet = new BasicBulletType(13f, 80){{
                     pierce = true;
diff --git a/core/src/mindustry/entities/bullet/ShrapnelBulletType.java b/core/src/mindustry/entities/bullet/ShrapnelBulletType.java
index 349b2adc8c..2683d35361 100644
--- a/core/src/mindustry/entities/bullet/ShrapnelBulletType.java
+++ b/core/src/mindustry/entities/bullet/ShrapnelBulletType.java
@@ -62,7 +62,7 @@ public class ShrapnelBulletType extends BulletType{
             Drawf.tri(b.x + Tmp.v1.x, b.y + Tmp.v1.y, serrationWidth, sl, b.rotation() + 90);
             Drawf.tri(b.x + Tmp.v1.x, b.y + Tmp.v1.y, serrationWidth, sl, b.rotation() - 90);
         }
-        Drawf.tri(b.x, b.y, width * b.fout(), (realLength + 50), b.rotation());
+        Drawf.tri(b.x, b.y, width * b.fout(), (realLength + 4f), b.rotation());
         Drawf.tri(b.x, b.y, width * b.fout(), 10f, b.rotation() + 180f);
         Draw.reset();
 
diff --git a/core/src/mindustry/world/blocks/power/NuclearReactor.java b/core/src/mindustry/world/blocks/power/NuclearReactor.java
index 4b1f038ec6..756f2a8eef 100644
--- a/core/src/mindustry/world/blocks/power/NuclearReactor.java
+++ b/core/src/mindustry/world/blocks/power/NuclearReactor.java
@@ -34,6 +34,8 @@ public class NuclearReactor extends PowerGenerator{
     public float heatOutput = 15f;
     /** rate at which heat progress increases */
     public float heatWarmupRate = 1f;
+    /** time taken to cool down if no fuel is inputted even if coolant is not present*/
+    public float ambientCooldownTime = 60f * 20f;
     /** threshold at which block starts smoking */
     public float smokeThreshold = 0.3f;
     /** heat threshold at which lights start flashing */
@@ -104,6 +106,7 @@ public class NuclearReactor extends PowerGenerator{
                 }
             }else{
                 productionEfficiency = 0f;
+                heat = Math.max(0f, heat - Time.delta / ambientCooldownTime);
             }
 
             if(heat > 0){