diff --git a/src/fenigma/shells.py b/src/fenigma/shells.py
index 7f23593..33edf4f 100644
--- a/src/fenigma/shells.py
+++ b/src/fenigma/shells.py
@@ -1,11 +1,9 @@
 """Shell (ammunition) types and their known properties.
 
-From High Command's field reference. Blast radius is None where unknown,
-5 of 12 shells (42%) are "standard" (available without special unlock/
-research), and all three shells with a known blast radius are standard
-ones; the rest are still unmeasured. Feeds into the firing-solution
-calculator later (ordnance choice affects what's needed to make a shot
-count, e.g. AP required for underground supply caches per the typewriter).
+From High Command's field reference. Blast radius is None where unknown.
+Feeds into the firing-solution calculator later (ordnance choice affects
+what's needed to make a shot count, e.g. AP required for underground
+supply caches per the typewriter).
 """
 
 from __future__ import annotations
@@ -16,8 +14,12 @@ from enum import Enum
 class Shell(Enum):
     #     description                                                 blast_radius_km  standard
     AP    = ("Armor-piercing",                                        0.05,            True)
+    LE    = ("Light explosive",                                       0.05,            True)  # same blast radius as AP
     HE    = ("High-explosive fragmentation",                          0.25,            True)
+    APHE  = ("Armor-piercing high-explosive",                         0.25,            True)  # same blast radius as HE
     HCHE  = ("High-capacity bursting charge",                         0.50,            True)
+    EQKE  = ("Earthquake charge",                                     0.50,            True)  # same blast radius as HCHE
+    FLCH  = ("Flechette",                                             0.60,            True)
     STAR  = ("Illumination star",                                     None,            True)
     SMK   = ("White phosphorus smoke",                                None,            True)
     MSTD  = ("Mustard (YX) blister agent",                            None,            False)