MegaMek's own figure - `bipush -4`, three times, in `MissileWeaponHandler.getAMSHitsMod` - applied where the target mounts one and the shot is one that handler would resolve. Applied at both places a `ShotKey` is built. `volley::gather` scores the twist options and `Volley::keys` feeds the location features, and a modifier on only one of them moves half the basis with nothing failing; patching the first alone changed no figure in a match, which is how the second was found. On `ams-asymmetric.mms`, one missile boat against an Atlas that mounts an AMS and one that does not, in the same firing decision: value 3.864 against 3.178, `p_breach` 0.000320 against 0.000089, `target_breach` 0.3472 against 0.1157. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Change-Id: Ie07ebea2453cd57c6f29ba7e5ce811b76dcd8425