Bushnell BTR-1 User Manual download pdf (Page 15)

height or width carefully in mils, compute it according to the formula and you will nd its range. Support your rie and be precise when

measuring objects; any measuring error causes an error in the computed range. Equally, a mistake in estimating the object size results in a

proportional range error.

Here’s an example: A coyote is sunning himself in a snoweld beside a fencepost; having crossed the fence earlier, you know that the post is

four feet high, or 1.33 yards. The fencepost measures 2.5 mils in your reticle.

1.33 yards x 1000 1330

= = 532 Yards

2.5 mils 2.5

CALCULATING HOLDS FOR WIND AND MOVING TARGETS

Your horizontal mil dots provide a precise way of holding for crosswinds and target

movement. Just look in your cartridge’s wind drift and moving target tables to determine

the exact holds for different distances. The example table (see pg. 17) lists one-mil widths

from 100 to 500 yards, so you can calculate how many mils to hold right or left when firing

in a crosswind, or engaging a moving target.

One mil is the distance between centers of dots. It’s easy to measure in half-mils or

even quarter-mils but with practice you can measure tenths of a mil.

1 Mil

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 31 32

No comments

Bushnell BTR-1 User Manual Page 15