INTRODUCTION

(a) Length - Barrel length varies, depending on the intended use of the shotgun. For instance, guns used primarily for trapshooting have barrels as long as 30 inches. A gun with a 26 inch barrel shoots with approximately the same velocity as a gun with a 32 inch barrel. (b) Bore Size - The common bore sizes are .410, 28, 20, 16 and 12 gauge. ................
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