diff --git a/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
index 52a26a3d1..92e923d10 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
@@ -187,7 +187,7 @@ public class GunEventHandler {
         if (!player.level().isClientSide()) {
             float headshot = (float) GunsTool.getGunDoubleTag(stack, "Headshot", 0);
             float damage = (float) (GunsTool.getGunDoubleTag(stack, "Damage", 0) + stack.getOrCreateTag().getDouble("sentinelChargeDamage")) * (float) perkDamage(stack);
-            float velocity = (float) ((GunsTool.getGunDoubleTag(stack, "Velocity", 0) + stack.getOrCreateTag().getDouble("CustomVelocity")) * perkSpeed(stack));
+            float velocity = (float) ((GunsTool.getGunDoubleTag(stack, "Velocity", 0) + GunsTool.getGunDoubleTag(stack, "CustomVelocity", 0)) * perkSpeed(stack));
             int projectileAmount = GunsTool.getGunIntTag(stack, "ProjectileAmount", 1);
             float bypassArmorRate = (float) GunsTool.getGunDoubleTag(stack, "BypassesArmor", 0);
             boolean zoom = player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).orElse(new ModVariables.PlayerVariables()).zoom;
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/handgun/Trachelium.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/handgun/Trachelium.java
index c62db5f77..a7f4b2ba7 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/handgun/Trachelium.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/handgun/Trachelium.java
@@ -275,12 +275,12 @@ public class Trachelium extends GunItem implements GeoItem, AnimatedItem {
         }
 
         if (scopeType > 0 || gripType > 0) {
-            tag.putDouble("CustomVelocity", 15);
+            GunsTool.setGunDoubleTag(stack, "CustomVelocity", 15);
             GunsTool.setGunDoubleTag(stack, "BypassesArmor", 0.4);
             GunsTool.setGunDoubleTag(stack, "Damage", 21);
             GunsTool.setGunDoubleTag(stack, "Headshot", 2.5);
         } else {
-            tag.putDouble("CustomVelocity", 0);
+            GunsTool.setGunDoubleTag(stack, "CustomVelocity", 0);
             GunsTool.setGunDoubleTag(stack, "BypassesArmor", 0.3);
             GunsTool.setGunDoubleTag(stack, "Damage", 19);
             GunsTool.setGunDoubleTag(stack, "Headshot", 2);