diff --git a/components/resource/bulletshape.cpp b/components/resource/bulletshape.cpp
index 0cbc63a22..baff86a79 100644
--- a/components/resource/bulletshape.cpp
+++ b/components/resource/bulletshape.cpp
@@ -17,6 +17,14 @@ BulletShape::BulletShape()
 
 }
 
+BulletShape::BulletShape(const BulletShape &copy, const osg::CopyOp &copyop)
+    : mCollisionShape(duplicateCollisionShape(copy.mCollisionShape))
+    , mCollisionBoxHalfExtents(copy.mCollisionBoxHalfExtents)
+    , mCollisionBoxTranslate(copy.mCollisionBoxTranslate)
+    , mAnimatedShapes(copy.mAnimatedShapes)
+{
+}
+
 BulletShape::~BulletShape()
 {
     deleteShape(mCollisionShape);
diff --git a/components/resource/bulletshape.hpp b/components/resource/bulletshape.hpp
index cfae27eac..a007bad31 100644
--- a/components/resource/bulletshape.hpp
+++ b/components/resource/bulletshape.hpp
@@ -3,7 +3,7 @@
 
 #include <map>
 
-#include <osg/Referenced>
+#include <osg/Object>
 #include <osg/ref_ptr>
 #include <osg/Vec3f>
 
@@ -15,12 +15,15 @@ namespace Resource
 {
 
     class BulletShapeInstance;
-    class BulletShape : public osg::Referenced
+    class BulletShape : public osg::Object
     {
     public:
         BulletShape();
+        BulletShape(const BulletShape& copy, const osg::CopyOp& copyop);
         virtual ~BulletShape();
 
+        META_Object(Resource, BulletShape)
+
         btCollisionShape* mCollisionShape;
 
         // Used for actors. Note, ideally actors would use a separate loader - as it is
@@ -42,6 +45,7 @@ namespace Resource
         btCollisionShape* getCollisionShape();
 
     private:
+
         void deleteShape(btCollisionShape* shape);
     };
 
diff --git a/components/resource/bulletshapemanager.cpp b/components/resource/bulletshapemanager.cpp
index 4cbe62f3c..2ab7b243a 100644
--- a/components/resource/bulletshapemanager.cpp
+++ b/components/resource/bulletshapemanager.cpp
@@ -13,6 +13,7 @@
 #include "bulletshape.hpp"
 #include "scenemanager.hpp"
 #include "niffilemanager.hpp"
+#include "objectcache.hpp"
 
 
 namespace Resource
@@ -99,6 +100,7 @@ BulletShapeManager::BulletShapeManager(const VFS::Manager* vfs, SceneManager* sc
     : mVFS(vfs)
     , mSceneManager(sceneMgr)
     , mNifFileManager(nifFileManager)
+    , mCache(new osgDB::ObjectCache)
 {
 
 }
@@ -114,8 +116,10 @@ osg::ref_ptr<BulletShapeInstance> BulletShapeManager::createInstance(const std::
     mVFS->normalizeFilename(normalized);
 
     osg::ref_ptr<BulletShape> shape;
-    Index::iterator it = mIndex.find(normalized);
-    if (it == mIndex.end())
+    osg::ref_ptr<osg::Object> obj = mCache->getRefFromObjectCache(normalized);
+    if (obj)
+        shape = osg::ref_ptr<BulletShape>(static_cast<BulletShape*>(obj.get()));
+    else
     {
         size_t extPos = normalized.find_last_of('.');
         std::string ext;
@@ -137,16 +141,19 @@ osg::ref_ptr<BulletShapeInstance> BulletShapeManager::createInstance(const std::
             node->accept(visitor);
             shape = visitor.getShape();
             if (!shape)
+            {
+                mCache->addEntryToObjectCache(normalized, NULL);
                 return osg::ref_ptr<BulletShapeInstance>();
+            }
         }
 
-        mIndex[normalized] = shape;
+        mCache->addEntryToObjectCache(normalized, shape);
     }
-    else
-        shape = it->second;
 
-    osg::ref_ptr<BulletShapeInstance> instance = shape->makeInstance();
-    return instance;
+    if (shape)
+        return shape->makeInstance();
+    else
+        return osg::ref_ptr<BulletShapeInstance>();
 }
 
 }
diff --git a/components/resource/bulletshapemanager.hpp b/components/resource/bulletshapemanager.hpp
index ac1523495..d9293896b 100644
--- a/components/resource/bulletshapemanager.hpp
+++ b/components/resource/bulletshapemanager.hpp
@@ -13,6 +13,11 @@ namespace VFS
     class Manager;
 }
 
+namespace osgDB
+{
+    class ObjectCache;
+}
+
 namespace Resource
 {
     class SceneManager;
@@ -34,8 +39,7 @@ namespace Resource
         SceneManager* mSceneManager;
         NifFileManager* mNifFileManager;
 
-        typedef std::map<std::string, osg::ref_ptr<BulletShape> > Index;
-        Index mIndex;
+        osg::ref_ptr<osgDB::ObjectCache> mCache;
     };
 
 }