To make your air rifle more powerful, release the magazine latch on the side of the trigger guard of the air powered rifle. Pull out and back on the cocking handle, then fire into a trash to verify that there is no ammunition in the firing chamber. Next, insert one end of the tube that comes with an aerosol machine and pull out on the cooking handle of your air-powered rifle. Place the free end of the oil tube into the air chamber hole and press down, releasing it after 10 seconds. However for more details, you can visit ehow.