Add first Winchester catalog product

catalog/winchester/020892201989.json

@@ -0,0 +1,36 @@
+{
+  "catalog_version": 1,
+  "record_uuid": "6df27dd1-240e-4af9-9307-85aad1bd6c25",
+  "upc": "020892201989",
+  "sku": "Q3131",
+  "manufacturer": "Winchester",
+  "brand": "USA",
+  "product_name": "5.56 NATO M193",
+  "caliber": "5.56 NATO",
+  "bullet": {
+    "weight_gr": 55,
+    "type": "FMJ",
+    "material": "Lead core"
+  },
+  "case": {
+    "material": "Brass",
+    "reloadable": true
+  },
+  "primer": {
+    "type": "Boxer",
+    "sealed": null
+  },
+  "package": {
+    "rounds_per_box": 20,
+    "boxes_per_case": null
+  },
+  "ballistics": {
+    "muzzle_velocity_fps": null,
+    "muzzle_energy_ft_lbs": null,
+    "test_barrel_length_in": null
+  },
+  "image": null,
+  "sources": [],
+  "status": "unverified",
+  "last_updated": "2026-07-15"
+}