20% Gelatin Blocks

All blocks in this category follow the NATO protocol for calibrating ordnance gelatin 240A so it can be used as ballistic gelatin. To pass this protocol a standard steel BB .177 caliber (4.5 mm) is shot from an air gun over a chronograph at 590 feet per second (fps), plus or minus +/- 10 feet, 10 feet away into a block of gelatin, and the resting position of the BB is 3.2 cm – 4.4cm (1.25 inches to 1.75 inches

The key difference between NATO & FBI calibrated gelatin is density. NATO gelatin is a 20% solution and FBI is 10% solution. NATO ballistic gelatin must be harder because they only use full metal jacket bullets, FMJ. All of our Clear Ballistic Gelatin blocks replace standard 240A ordnance gelatin.