I have both and am really surprised that the smaller diameter bullet doesn't fly noticeabley faster.
In the 270 I mostly use 130gr and in the 25-06 mostly 117, about 9% lighter and smaller diameter which should mean more FPS but this isn't true?
The 130gr flying at 3150 is hard to beat by any standards, and now some are pushing them to over 3200. Not sure of their group size.
Also another advantage is the 150gr, if a person wants to step up to moose size game. But on the other end of the spectrum for predator hunting you can get great results with light bullets in the 25-06.
When comparing bullets & velocities of different calibers, using similar length/bearing surface bullets makes for a more meaningful comparison. The 117 in the 25-06 is on the upper end, while the 130 in the 270 is middle of the road. The difference being that the 117 in the 25-06 is longer and more bearing surface most likely, and thus more friction. I think the 100gr bullets in the 25-06 is a better comparison to 130's in the 270.
