Any butt joints or seams create a ballistic weakness. To insure ballistic integrity, we recommend that you incorporate 4" overlap strips (battens). These strips insure a 2" ballistic overlap on the back of each side of the seam. Conformity to curved surfaces can be handled by placing 12" to 18" vertical strips following the inside curvature of the surface to be protected. The same 4" overlap strips should be employed at each joint. Installation for Bullet Resistant Panels of All Levels >> BR Level Specification Comparison Chart BR Level (UL752) Shots Ammunition (Grains) Velocity Min/Max FPS Thickness (inches) Weight (lbs) Nominal (lbs) Fire Rating (Hours) Weapon Level 1 Single 124 GR FMJ 1175-1295 1/4 2.6 62.4 1 9mm Full Metal Copper Jacket with Lead Core Level 2 Single 158 GR SP 1250-1375 5/16 3.6 86.4 1 .357 Magnum Jacketed Lead Soft Point Level 3 Single 240 GR LEAD 1350-1485 7/16 4.8 115.2 1 .44 Magnum Lead Semi-wadcutter Gas Checked Level 4 Single 180 GR SP 2540-2794 1-3/8 13.9 333.6 1 .30 Caliber Rifle Lead Core Soft Point (.30-06 Caliber) Level 5 Single 150 GR FMJ 2750-3025 1-7/16 14.8 355.2 1 7.62mm Rifle Lead Core Full Metal Copper Jacket, Military Ball (.308 Caliber) Level 6 Multiple 124 GR FMJ 1400-1540 3/8 3.9 93.6 1 9mm UZI Full Metal Copper Jacket with Lead Core Level 7 Multiple 55 GR FMJ 3080-3388 1-1/8 11.7 280.8 1 5.56mm M-16 Rifle Full Metal Copper Jacket with Lead Core (.223 Caliber) Level 8 Multiple 150 GR FMJ 2750-3025 1-716 15.2 364.8 1 7.62 Rifle Lead Core Full Metal Copper Jacket, Military Ball (.308 Caliber) Download the PDF
