Varmint Ballisticards® are very handy field tools for the varminter. Standard Cards are available in .223, 220 Swift, and 22-250. Among the standard offerings, we find the 22-250 Ballisticard best suited for 50gr-70gr 6BR loads. If you match the bullet and velocity, the data printed on a 22-250 card will work just fine for a 6BR--once the bullet leaves the muzzle, since speed, bullet weight, and wind is all that matter. But you can have custom calculations printed on your cards for a small extra fee. The standard Varmint cards are designed for use with FEDERAL Premium ammunition, or handloads using the same bullets at similar velocities. There is a useful cross-Reference section also provides information for using Ballisticards with other brands of ammunition.
FEATURES Trajectory is calculated from 50 to 500 yards 200 yard zero Up/down compensation for shooting on different angles Wind deflection Scope clicks (come-ups) for clicking up or down for dead-on point-of-aim Moving target leads Detailed instructions and tips are included Custom Calculations are available. (Advised for 6BR though velocities are very similar to 22-250 for 50-70gr bullets)