what solid cam is equivalent to a hyd 268 ?

In order to find a solid lifter camshaft that is "about the same" as a known hydraulic, you need to add around 10 degrees duration. In other words, a 278-280 solid will be "about the same size" as a comparable 268 hydraulic.
Got it .
but now that 278-280 dur is getting pretty close to what I have now, right ? where would be a sweet spot for the lift then?