diff --git a/Data-1.13/CTHConstants.ini b/Data-1.13/CTHConstants.ini
index 2de511b91..6811d72d2 100644
--- a/Data-1.13/CTHConstants.ini
+++ b/Data-1.13/CTHConstants.ini
@@ -429,3 +429,16 @@ RANGE_EFFECTS_DEV = TRUE
 MAX_EFFECTIVE_RANGE_MULTIPLIER = 1.4
 MAX_EFFECTIVE_RANGE_REDUCTION = 0.5
 MAX_EFFECTIVE_USE_GRADIENT = TRUE
+
+;------------------------------------------------------------------------------
+; Experimental NCTH tweaks
+;------------------------------------------------------------------------------
+
+; limit max bullet deviation to improve suppression effectiveness
+; max deviation limit depends on weapon range, recoil and shooting mode
+LIMIT_MAX_DEVIATION = FALSE
+
+; limit max vertical deviation so there will be less ground shots
+; works for first bullet only
+; when this option enabled, VERTICAL_BIAS option has no effect
+LIMIT_GROUND_SHOTS = FALSE
\ No newline at end of file