diff --git a/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
index 08807fd38..73c9ec0bf 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/GunEventHandler.java
@@ -257,11 +257,11 @@ public class GunEventHandler {
         }
 
         if (stack.getItem() == ModItems.M_870.get() && reload.prepareLoadTimer.get() == 10) {
-            singleLoad(player, data);
+            iterativeLoad(player, data);
         }
 
         if (stack.getItem() == ModItems.SECONDARY_CATACLYSM.get() && reload.prepareLoadTimer.get() == 3) {
-            singleLoad(player, data);
+            iterativeLoad(player, data);
         }
 
         // 一阶段结束，检查备弹，如果有则二阶段启动，无则直接跳到三阶段
@@ -295,7 +295,7 @@ public class GunEventHandler {
 
         // 装填
         if (data.iterativeAmmoLoadTime() == reload.iterativeLoadTimer.get()) {
-            singleLoad(player, data);
+            iterativeLoad(player, data);
         }
 
         // 二阶段打断
@@ -342,12 +342,14 @@ public class GunEventHandler {
         }
     }
 
-    public static void singleLoad(Player player, GunData data) {
-        data.ammo.set(data.ammo.get() + 1);
+    public static void iterativeLoad(Player player, GunData data) {
+        var required = Math.min(data.magazine() - data.ammo.get(), data.iterativeLoadAmount());
+        var available = Math.min(required, data.countBackupAmmo(player));
+        data.ammo.add(available);
 
         if (!InventoryTool.hasCreativeAmmoBox(player)) {
             var cap = player.getData(ModAttachments.PLAYER_VARIABLE);
-            data.consumeBackupAmmo(player, 1);
+            data.consumeBackupAmmo(player, available);
             player.setData(ModAttachments.PLAYER_VARIABLE, cap);
         }
     }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/data/DefaultGunData.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/data/DefaultGunData.java
index 609c87296..6397c8f89 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/data/DefaultGunData.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/data/DefaultGunData.java
@@ -62,10 +62,19 @@ public class DefaultGunData {
     public int prepareLoadTime;
     @SerializedName("PrepareEmptyTime")
     public int prepareEmptyTime;
+
+    // 每次单发装填用时的
     @SerializedName("IterativeTime")
     public int iterativeTime;
+
+    // 单发装填时的上弹时间
     @SerializedName("IterativeAmmoLoadTime")
     public int iterativeAmmoLoadTime = 1;
+
+    // 单次单发装填上弹数量
+    @SerializedName("IterativeLoadAmount")
+    public int iterativeLoadAmount = 1;
+
     @SerializedName("FinishTime")
     public int finishTime;
 
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/data/GunData.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/data/GunData.java
index 9147809f0..0523936cb 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/data/GunData.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/data/GunData.java
@@ -215,6 +215,10 @@ public class GunData {
         return defaultGunData().iterativeAmmoLoadTime;
     }
 
+    public int iterativeLoadAmount() {
+        return defaultGunData().iterativeLoadAmount;
+    }
+
     public int defaultPrepareTime() {
         return defaultGunData().prepareTime;
     }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/data/value/IntValue.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/data/value/IntValue.java
index b09dc4b87..2ef1d8db0 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/data/value/IntValue.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/data/value/IntValue.java
@@ -32,6 +32,10 @@ public class IntValue {
         }
     }
 
+    public void add(int value) {
+        set(get() + value);
+    }
+
     public void reset() {
         set(defaultValue);
     }