diff --git a/src/main/java/com/atsuishio/superbwarfare/data/gun/DefaultGunData.java b/src/main/java/com/atsuishio/superbwarfare/data/gun/DefaultGunData.java
index 6d71a86f5..60bd99d21 100644
--- a/src/main/java/com/atsuishio/superbwarfare/data/gun/DefaultGunData.java
+++ b/src/main/java/com/atsuishio/superbwarfare/data/gun/DefaultGunData.java
@@ -73,6 +73,10 @@ public class DefaultGunData {
     public int prepareTime;
     @SerializedName("PrepareLoadTime")
     public int prepareLoadTime;
+
+    // 单发装填时的上弹时间
+    @SerializedName("PrepareAmmoLoadTime")
+    public int prepareAmmoLoadTime = 1;
     @SerializedName("PrepareEmptyTime")
     public int prepareEmptyTime;
 
diff --git a/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java b/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java
index af0f6e0e1..831f8a264 100644
--- a/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java
+++ b/src/main/java/com/atsuishio/superbwarfare/data/gun/GunData.java
@@ -269,6 +269,11 @@ public class GunData {
         return defaultGunData().prepareLoadTime;
     }
 
+    public int prepareAmmoLoadTime() {
+        return defaultGunData().prepareAmmoLoadTime;
+    }
+
+
     public int defaultPrepareEmptyTime() {
         return defaultGunData().prepareEmptyTime;
     }
diff --git a/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
index a12c8da5c..ab366f9fd 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
@@ -229,7 +229,7 @@ public class GunEventHandler {
         if (reload.singleReloadStarter.start()) {
             NeoForge.EVENT_BUS.post(new ReloadEvent.Pre(player, data));
 
-            if ((data.defaultPrepareLoadTime() != 0 && data.ammo.get() == 0) || stack.is(ModItems.SECONDARY_CATACLYSM.get())) {
+            if (data.defaultPrepareLoadTime() != 0 && data.ammo.get() == 0) {
                 // 此处判断空仓换弹的时候，是否在准备阶段就需要装填一发，如M870
                 playGunPrepareLoadReloadSounds(player);
                 int prepareLoadTime = data.defaultPrepareLoadTime();
@@ -254,11 +254,7 @@ public class GunEventHandler {
             reload.setState(ReloadState.NORMAL_RELOADING);
         }
 
-        if (stack.getItem() == ModItems.M_870.get() && reload.prepareLoadTimer.get() == 10) {
-            iterativeLoad(player, data);
-        }
-
-        if (stack.getItem() == ModItems.SECONDARY_CATACLYSM.get() && reload.prepareLoadTimer.get() == 3) {
+        if (reload.prepareLoadTimer.get() == data.prepareAmmoLoadTime()) {
             iterativeLoad(player, data);
         }
 
diff --git a/src/main/resources/data/superbwarfare/guns/m_870.json b/src/main/resources/data/superbwarfare/guns/m_870.json
index a39ca9bab..08ad79591 100644
--- a/src/main/resources/data/superbwarfare/guns/m_870.json
+++ b/src/main/resources/data/superbwarfare/guns/m_870.json
@@ -14,6 +14,7 @@
   ],
   "PrepareTime": 7,
   "PrepareLoadTime": 36,
+  "PrepareAmmoLoadTime": 10,
   "IterativeTime": 16,
   "IterativeAmmoLoadTime": 3,
   "FinishTime": 12,
diff --git a/src/main/resources/data/superbwarfare/guns/secondary_cataclysm.json b/src/main/resources/data/superbwarfare/guns/secondary_cataclysm.json
index 32f5af6f7..5a6a9b23a 100644
--- a/src/main/resources/data/superbwarfare/guns/secondary_cataclysm.json
+++ b/src/main/resources/data/superbwarfare/guns/secondary_cataclysm.json
@@ -14,8 +14,9 @@
     "Iterative"
   ],
   "PrepareLoadTime": 31,
+  "PrepareAmmoLoadTime": 3,
   "IterativeTime": 20,
-  "FinishTime": 19,
+  "FinishTime": 22,
   "SoundRadius": 8,
   "RPM": 300,
   "AmmoType": "superbwarfare:grenade_40mm",