Call Guhring, they have great products with solid technical support. I recently upgraded my drilling process on 304 material and I'm drilling a lot faster with greater tool life based on their suggestions.
Also, keep your oil fresh, if it's been awhile since you changed it, then I would suggest to change it before you start your larger production run. Many shops underestimate the value of clean oil and sacrifice tool life because they think their oil is "good enough".
One of the unique hurdles in swiss-type machining is there are more opportunities for your cutting oil to be diluted by bar feed oil & way lube. I've seen many applications return better results by just putting in new oil.