This may be handy to know.

"Journee's Formula" for

*estimating maximum shot travel*:

Lead shot size diameter in inches, (expressed as a decimal), multiplied by 2200 gives the maximum potential distance in yards.

To convert SAMMI

*voluntary* numerical shot sizes to decimal, subtract shot size from 17.

Example: 17 - 6 (shot size) = 11 Move decimal two places to the left .11"

SAMMI #6 lead shot .11 x 2200 = 242 Yards

Federal 00B -measured, .325 x 2200 = 715 yards