breakbarrelairrifle.com I Love My Break Barrel Air Rifle. These Are the Pros and the Cons, the Joys and the Pains, the Good and Bad of Owning a Break Barrel Air Rifle. My break barrel air rifle is a Gamo Shadow in .177 cal and will put 12 grain lead pellets completely through a 2X4 at 1000 feet per second, imagine what it does to squirrels. Pyramyd Air is where I bought my Gamo air rifle and all the other air guns I own. I also buy my pellets, targets, scopes and air gun accessories from Pyramyd Air. http