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AMMO REVIEW: 9mm 147 gr Federal HST in Calibrated Gel (2021)

Comprehensive review of 9mm 147 grain Federal HST JHP defensive ammo. Includes day/night shots, overview, chronograph velocities, 10% calibrated gel test with IWBA 4 layers denim, and summary. Making the gel: Using Knox powder, mixed 18 oz per gallon of distilled water; total of 4 gallons for this size block. Low boil at 130 to 140 degrees F for about an hour and constantly mixing at low speed with a drill using painter's paddle bit. Pour into 18 x 8 x 8 stainless steel mold. Cool outdoors an hour or so to burn off steam. Store in refrigerator at 34 degrees F for 72 to 96 hours. When calibrating, steel BB at approx. 600 FPS at 10 feet. Acceptable range at block temp of 39 degrees is 3.25 to 3.75". Otherwise, the block is out of calibration. https://rumble.com/user/TNOUTDOORS9