RULE OF THUMB — USING MIL-TENTHS
Deer
Range (yards) ≈ 45 ÷ (mil-tenths)
(Example: 3.2 mil = 32 tenths → 45/3.2 ≈ 140 yards)
Bear
Range (yards) ≈ 55 ÷ (mil-tenths)
Elk
Range (yards) ≈ 75 ÷ (mil-tenths)
Why these numbers work
They come from:
Deer chest ≈ 18"
Bear chest ≈ 22"
Elk chest ≈ 30"
Range (yards) ≈ 25 × chest(in) ÷ mils
Converting to tenths just divides by 10, giving the simple constants (45, 55, 75).
The final version you can memorize in 5 seconds
Deer: 45 ÷ mil-tenths
Bear: 55 ÷ mil-tenths
Elk: 75 ÷ mil-tenths
Or using mils
Deer: 450 ÷ mils
Bear: 550 ÷ mils
Elk: 750 ÷ mils
