The ornamental design for a new bowriser for an archery bow, as shown and described.
FIG. 1 is a front left perspective view of a bow riser for an archery bow in accordance with the present invention;
FIG. 2 is a rear right perspective view of the bow riser for an archery bow shown in FIG. 1;
FIG. 3 is a left side elevational view of the bow riser for an archery bow shown in FIG. 1;
FIG. 4 is a front elevational view of the bow riser for an archery bow shown in FIG. 1;
FIG. 5 is a rear elevational view of the bow riser for an archery bow shown in FIG. 1;
FIG. 6 is a right side elevational view of the bow riser for an archery bow shown in FIG. 1;
FIG. 7 is a top view of the bow riser for an archery bow shown in FIG. 3; and,
FIG. 8 is a bottom view of the bow riser for an archery bow shown in FIG. 3.
The broken lines showing mounting arrangements and additional components are for illustrative purposes only and do not form a part of the claimed design.