12 Gauge Shotgun Winchester 2 ¾“ 1oz Rifled Slug slow motion ballistic gelatin

20“ barrel, cylinder choke, 10’ feet distance. Maximum penetration depth = 12.3“ (20% gelatin) Maximum temporary cavity = 9.1“ Bullet expansion = “ average diameter ( square inch surface area) Each block that the gelatin sits on is exactly 1“ across and the spaces are exactly 1“ across. 20% gelatin is tougher than 10% gelatin that is used for static gelatin testing. Check out more at: Website - Blog - Bullet Velocity chart: http: