Rice Cannonball can not eat more, because the popcorn machine canister coated with a layer of lead alloy, when the popcorn machine will be heated part of the lead into the steam into the popcorn, the lead into the human body, if the dose of large may be detrimental to human health, so the rice Cannonball can not be eaten in large quantities.

Rice gun barrel is a kind of popcorn, the use of raw materials is rice, corn and other grains, high calorie, general 100 grams of rice gun barrel calories about 350 calories. In addition, popcorn is an ancient puffed food, a historian in the United States, New Mexico caves found 5,000 years ago, the ancient Indians eat popcorn, only due to the "process" limitations, in the taste is far less than the contemporary popcorn crunchy only.