diff --git a/src/app/tools/tankopedia/[id]/components/AntagonistBar/index.tsx b/src/app/tools/tankopedia/[id]/components/AntagonistBar/index.tsx
index 3d0a2721c..55907e0a0 100644
--- a/src/app/tools/tankopedia/[id]/components/AntagonistBar/index.tsx
+++ b/src/app/tools/tankopedia/[id]/components/AntagonistBar/index.tsx
@@ -18,7 +18,10 @@ import {
   TIER_ROMAN_NUMERALS,
 } from '../../../../../../core/blitzkrieg/tankDefinitions';
 import { mutateDuel, useDuel } from '../../../../../../stores/duel';
-import { useTankopediaTemporary } from '../../../../../../stores/tankopedia';
+import {
+  mutateTankopediaTemporary,
+  useTankopediaTemporary,
+} from '../../../../../../stores/tankopedia';
 import { TankSearch } from '../../../components/TankSearch';
 
 export function AntagonistBar() {
@@ -47,6 +50,9 @@ export function AntagonistBar() {
                 onClick={() => {
                   mutateDuel((draft) => {
                     draft.antagonist!.shell = shell;
+                    mutateTankopediaTemporary((draft) => {
+                      draft.shot = undefined;
+                    });
                   });
                 }}
               />
diff --git a/src/app/tools/tankopedia/[id]/page.tsx b/src/app/tools/tankopedia/[id]/page.tsx
index 8d631e6bf..d07221278 100644
--- a/src/app/tools/tankopedia/[id]/page.tsx
+++ b/src/app/tools/tankopedia/[id]/page.tsx
@@ -56,17 +56,26 @@ export default function Page({ params }: { params: { id: string } }) {
     function handleKeyDown(event: KeyboardEvent) {
       if (document.activeElement instanceof HTMLInputElement) return;
 
+      function wipeShot() {
+        mutateTankopediaTemporary((draft) => {
+          draft.shot = undefined;
+        });
+      }
+
       if (event.key === '1') {
+        wipeShot();
         mutateDuel((draft) => {
           draft.antagonist!.shell = draft.antagonist!.gun.shells[0];
         });
       } else if (event.key === '2') {
+        wipeShot();
         mutateDuel((draft) => {
           if (draft.antagonist!.gun.shells[1]) {
             draft.antagonist!.shell = draft.antagonist!.gun.shells[1];
           }
         });
       } else if (event.key === '3') {
+        wipeShot();
         mutateDuel((draft) => {
           if (draft.antagonist!.gun.shells[2]) {
             draft.antagonist!.shell = draft.antagonist!.gun.shells[2];
diff --git a/src/components/ShotDisplay.tsx b/src/components/ShotDisplay.tsx
index 31d17814d..311c4fc86 100644
--- a/src/components/ShotDisplay.tsx
+++ b/src/components/ShotDisplay.tsx
@@ -134,7 +134,7 @@ export function ShotDisplay() {
                         )}
                         mm
                         {layer.type === 'gap' && isExplosive(shell.type)
-                          ? ` (${Math.round(Math.min(100, 0.5 * layer.gap * 100))}% pen. loss)`
+                          ? ` (-${Math.round(Math.min(100, 0.5 * layer.gap * 100))}% penetration)`
                           : ''}
                       </Text>
                     </Flex>