Recognizing that recoil is not a factor for everyone, however it is a factor for some.
Chuckhawks lists the following recoil data.
25-06 Rem. 120gr. at 3000fps rifle weight 8.0lb.'s recoil energy 12.5 recoil velocity 10.0
6.5x55 140 gr at 2650fps weight 9.0 lb.'s recoil energy 10.6 recoil velocity 8.7
The 6.5x55 with 129 gr bullets provides the same data as the 25-06 except for fps which is slower.
One should really read the accompanying text with the tables on Chuckhawks to completely understand his point of view and data.
Just in case someone wishes to check it out.
http://www.chuckhawks.com/recoil_table.htm
Keeping in mind that recoil is highly subjective and data collection methods are sometimes variable, I think that the end story is all of the "talk" about the 6.5x55 having low comparative recoil is probably accurate. Plus the ability to load a heavier bullet adds to the 6.5x55 credit. The Swede's, Finn.'s and Norwegians have been shooting moose with 6.5's for a long time.
Personally I have only fired about 5 rounds from a friends 25-06 many years ago. They were fairly hot handloads so recoil was pretty much the same as my 270 Win. handloads at that time. I own a 6.5x55 and enjoy shooting factory loads out of it, more so than my 270 Win. My choice would be the 6.5x55 both for target shooting and for hunting.
Dave