Gary,
With a perfect machine, yes. Calculators will assume industrial machine quality, power, rigidity and spindle TIR plus near perfect lube & chip clearance, an air nozzle on the cutter and the occasional dab of WD is usually a big help on small cutters in aluminium jobs.

I'd suggest you CAM your job with those settings and then run a test, start off with the feed reduced somewhat on your controller, 60% or so, and see how it goes, if it's running smoothly you can move towards 100% feed in steps, some jobs will run faster, some slower, keep a work book with a section logging the ideal settings for the cutters and materials you use.

- Nick