Bullet tested was 300 gr. Winchester Partition Gold. Firearm was an 18” barrel lever-action. Bullet through-penetrated a 16.0 ± 0.031" block of ballistic gelatin and penetrated 1 foot into a polyester-filled bullet stop box. 1838 ± 0.500 ft/sec bullet impact velocity 0.671 ± 0.0005” average diameter Block calibrated at 10.0 ± 0.05cm penetration at 581 ± 0.500 ft/sec impact velocity. Bullet overall diameter was 0.671 ± 0.0005".