diff --git a/GameSettings.cpp b/GameSettings.cpp
index 5a2102df..6a0e50ae 100644
--- a/GameSettings.cpp
+++ b/GameSettings.cpp
@@ -1610,6 +1610,8 @@ void LoadGameExternalOptions()
 	// HEADROCK HAM 3.5: Explosive Suppression Effectiveness alters the amount of Suppression Points you get from nearby blasts.
 	gGameExternalOptions.usExplosionSuppressionEffect			= iniReader.ReadInteger("Tactical Suppression Fire Settings","EXPLOSIVE_SUPPRESSION_EFFECTIVENESS", 100, 0, 1000);
 
+	gGameExternalOptions.ubBuckshotSuppressionEffectiveness		= iniReader.ReadInteger("Tactical Suppression Fire Settings", "BUCKSHOT_SUPPRESSION_EFFECTIVENESS", 50, 0, 100);
+
 	// HEADROCK HAM 3.1: This is a suppression tool that not everyone will like. It gives an on-screen message when any character has been suppressed so much he's lost his next turn completely!
 	gGameExternalOptions.fShowSuppressionShutdown				= iniReader.ReadBoolean("Tactical Suppression Fire Settings","NOTIFY_WHEN_PINNED_DOWN", FALSE);
 
diff --git a/GameSettings.h b/GameSettings.h
index 3bb1871d..b7b50440 100644
--- a/GameSettings.h
+++ b/GameSettings.h
@@ -1205,6 +1205,8 @@ typedef struct
 	// HEADROCK HAM 3.5: Explosive Suppression Effectiveness alters the amount of Suppression Points you get from nearby blasts.
 	UINT16 usExplosionSuppressionEffect;
 
+	UINT8 ubBuckshotSuppressionEffectiveness;
+
 	// HEADROCK HAM 3.5: When enabled, goggle-switching affects every merc in the sector, not just those belonging to the current squad.
 	BOOLEAN fGoggleSwapAffectsAllMercsInSector;
 
diff --git a/Tactical/LOS.cpp b/Tactical/LOS.cpp
index 7e963243..617eea44 100644
--- a/Tactical/LOS.cpp
+++ b/Tactical/LOS.cpp
@@ -7106,7 +7106,9 @@ void MoveBullet( INT32 iBullet )
 						{
 							// buckshot has only a 1 in 2 chance of applying a suppression point
 							// HEADROCK HAM 5: For NCTH, make pellets as effective as any other bullet.
-							if (UsingNewCTHSystem() || !(pBullet->usFlags & BULLET_FLAG_BUCKSHOT) || Random(2))
+							// sevenfm: externalized chance
+							//if (UsingNewCTHSystem() || !(pBullet->usFlags & BULLET_FLAG_BUCKSHOT) || Random(2))
+							if (!(pBullet->usFlags & BULLET_FLAG_BUCKSHOT) || Chance(gGameExternalOptions.ubBuckshotSuppressionEffectiveness))
 							{
 								// bullet goes whizzing by this guy!
 								switch ( gAnimControl[ MercPtrs[pStructure->usStructureID]->usAnimState ].ubEndHeight )
@@ -7192,7 +7194,9 @@ void MoveBullet( INT32 iBullet )
 							{
 								// buckshot has only a 1 in 2 chance of applying a suppression point
 								// HEADROCK HAM 5: For NCTH, make pellets as effective as any other bullet.
-								if (UsingNewCTHSystem() || !(pBullet->usFlags & BULLET_FLAG_BUCKSHOT) || Random(2))
+								// sevenfm: externalized chance
+								//if (UsingNewCTHSystem() || !(pBullet->usFlags & BULLET_FLAG_BUCKSHOT) || Random(2))
+								if (!(pBullet->usFlags & BULLET_FLAG_BUCKSHOT) || Chance(gGameExternalOptions.ubBuckshotSuppressionEffectiveness))								
 								{
 									// bullet goes whizzing by this guy!
 									switch ( gAnimControl[ pTarget->usAnimState ].ubEndHeight )