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 definition of kilocalories (kcal), or large calorie, is the amount of heat needed to raise the temperature of one kilogram of water by one degree Celcius. A kilocalorie is equivalent to 1000 small calories.