Hoppe's #9 is a gun oil, not a stock finish, meant for lubricating metal parts. If you have a satin finish on your stock, that gun oil is slowly eating that finish away. Switch over to a linseed oil based or carnuba wax based stock rub. It will maintain your stock's finish and protect it as well.
Calories vs Kilojoules. Calories and kilojoules are units to measure the energy. Commonly, these two words are used in measuring food energy. It is necessary to indicate the amount of energy contained in each food item on their packagings.
The foods we eat provide energy, which is measured in kilojoules. Just how much energy depends on the amount of carbohydrate, protein and fat the food contains. Foods such as fruits, vegetables and legumes are relatively low energy (kilojoule) dense foods. Foods which are high in fats, added sugars or alcohol are by far the most energy-dense foods.