Advanced Engineering Tech - How to calculate difference in .004 to .006 Adv Dur in a cam specs

Hi hope this is in the right area, I am looking at some large stroker cams and specificaly there Advertised duration, some are at .004 as in the crane cams and .006 in the Comp lobes. I am using a DCR calculator that only accurate for .006 does anyone know what the difference is for a given cam. How can I work out what the Crane cam will be at .006 so I can use its .006 in the calculator, any help would be great.

for example,

Cam 1.
Comp lobe
.006", .050"
In 301 251
Ex 305 255

Cam 2.
Crane Cam
.004 .050"
In 314 250
Ex 322 258

Since there are many variables within the generic '0.004" or 0.006" lift' statement (e.g. fast or slow ramp, hydraulic or solid cam, what lash, etc.) I wouldn't worry about the difference. One to watch for however is that some DCR calculators utilze the 0.050" lift point, and that is enough to make a big difference!