Did you mean trying the Barnes bullet in the 25-06 or in the 30-06? If your 06 still wears the original barrel check to see if the rifling is a right hand or left hand twist. Some of the 03s wore the left hand twist for the earlier 30-03 round which I believe shot a 220 gn slug as did the earlier Krags. If she wears the left hand twist she should shoot heavy slugs and heavy loads very, very nicely...............jmtcw.