Lets allow a generous 30secs to give a cv a once over and say yes or no based on a particular experience level they are looking for.
With a spare hour thats 120CVs processed.
ROFL!
I would sincerely hope that someone spends more than 30 seconds on my CV, even for a "Rough-cut/First cull".
Just saying, what if that 400+ CV's all met the requirements?
In another industry I was the person sifting through hundreds of applications for a graduate entry IT position. It can take longer than you might think.
DIVOSH!