So, exactly what they are now?
Rate of fire depends on range as well, closer they shoot faster.
I see what OP is talking about. At close range the carbines put out 33 RPM where a standard panzergren K98 puts out 27 RPM.
Once you get to mid and long range, the carbines have a much higher RPM than bolt actions.
Still, the DPS curve is basically just that of a bolt action.
EDIT: Oops. I didn't realize DAKzergren K98 is such an outlier... Grenadier K98 close RPM is 19.