The #1640 Spitzer bullet is one of the finest 25 caliber hunting bullets for medium game. Sierra's unique four-station jacket draw produces jackets with maximum concentricity and uniformity together with uniform taper dimensions. The result is a bullet with extraordinary accuracy, dependable expansion and deep penetration on medium game. This bullet is well suited for close to medium-range shots.

Bullet Type	Pro-Hunter
Weight (grains)	117
Sectional Density	0.253
Ballistic Coefficients and Velocity Ranges	.388 @ 2500 fps and above .383 between 2500 and 1800 fps .362 @ 1800 fps and below