For years me & mine have been using the Barnes original 120 X & now the 120 TSX in 260 Rem & 6.5x55. They have always given complete penetration even thru heavy bone.. We have never recovered one of the bullets.. I do have a friend who uses the 140gr Barnes TSX in his 7-08 with no problem also getting complete penetration. Another friend uses a 308 & the Barnes 130grTSX with complete satisfaction. . I would respectably recommend the 260Rem,6,5x55 or 7-08 over the 7mag for your daughter. You do not need a heavy recoiling mag to successfully harvest elk. What needs to be concentrated on is trigger squeeze & bullet placement. We have taken enough elk over the years to have lost count. What I recommend is base on years of in the field experience .
