Using a semi-auto in .308 does absorb some recoil.
I have a CETME and a spanish Mauser in .308 (yes, I can shoot .308 in this Mauser).
The CETME seems to have a softer felt recoil.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)