From the Steel Challenge website: a pdf of the rule book
All shooting boxes will be 3’ x 3’ except for Outer Limits, which are 4’ x 4’.
All courses of fire will be fired from a single shooting box with the exceptions of Outer
Limits and Showdown, which will each have more than one shooting box. Showdown
will have two 3’x 3’ shooting boxes and two runs will be shot from one shooting box and
two from the other. The competitor may choose from either box to shoot their fifth and
final run. There is NO movement between boxes during Showdown.
The Outer Limits will have three 4’ x 4’ shooting boxes. The shooter will start on their
weak side shooting box and will engage the 20 and 35 yard plates on the weak side of the
center line, move to the middle shooting box and engage the remaining two plates and
stop plate. The distance between each of the three boxes will be 6’. Note: Only two of the
three boxes will be used by each shooter. Depending on whether you are right or left
handed, you will begin in the appropriate outside box and finish in the middle box.