The ornamental design for a shootingtargetholder, as shown and described.
FIG. 1—¾ front perspective view of the shooting target holder;
FIG. 2—front elevation view of the shooting target holder-enlarged;
FIG. 3—right side elevation view of the shooting target holder-enlarged;
FIG. 4—in use ¾ front perspective of the view shooting target holder; and,
FIG. 5—alternative configuration: in use ¾ rear perspective view of the shooting target holder.
The broken line showing of portions of the shooting target holder shown in FIGS. 1 through 5 do not form a part of the claimed design. The broken lines showing of a clay pigeon in FIG. 5 is for the purpose of illustrating environment and does not form a part of the claimed design.