LFAST Calculator

INSTRUCTIONS

You may need to determine an approximate MPI when firing on tank gunnery ranges that share a common impact area (on which you cannot go down range to get the measurements to calculate a CCF).

Step 1

Mark the impact of each round fired with an S for sabot or H for HEAT, and the sequence (1, 2, 3) in which they were fired.

Step 2

Draw a line connecting the center of any two round impacts on the CCF Worksheet.

Step 3

Make a mark on this 1 line halfway between the two impacts.

Step 4

From the halfway mark, draw a line to the center of the remaining round impact.

Step 5

From the halfway mark, make a second mark one-third the distance to the third impact.(This mark is the MPI.)

Step 6

Estimate the closest intersection of the MPI to the lines on the sheet. The numbers along the top and side correspond with the new discreet CCF. Discreet CCF this vehicle would be: AZ: -.65(L) and EL: -1.30(U).