My discussion on the importance of shotgun barrel length.For a discussion on shell length:Shotgun Shell Length, 12ga 3in v. 3.5 • Shotgun Shell Length, 12ga 3in v. 3.5 For a discussion on 10ga:10ga V. 12ga, has the mighty 10 fallen? • 10ga V. 12ga, has the mighty 10 fallen?