NONE that I could give, don't send a kid to do a man's job, will they kill, yes, but so will my 4x4 and I'm not driving it into any moose lately....BIG GAME = BIG GUNS and great bullets..why make them suffer or cause yourself misery!
The .25/06 may be a tad flatter shooting, but the difference is negligible. The .270 with 150 grain bullets packs more of a whallop esp at long distance.
the 25-06 is not even flatter shooting considering you use the same bullet weight with both the 270 and the 25-06. What im getting at is the 25 may shoot flatter with an 87gr bullet as compared to a 270 shooting a 130 gn bullet, but if you shot both guns with say 90 grain bullets, the .270 would shoot flatter.