Well I finally got everything setup and drilled this part. Sort of a disaster! First I think I would like to make myself an id tool holder for this purpose before doing this again. When the coolant pressure gets up to about 130-150 psi coolant comes out everywhere on those mazak blocks. I'd like to figure a way to plumb right from the turret to the back of the tool. The problem with leaks is that at least on my setup I think it saps a lot of pressure that the drill could benefit from.
As for the drilling part... Allied tool has guidelines for deep hole drilling with their products. The required hole turned out to be .540" dia, 8.75" deep, material 304 ss. I followed this guide as best I could. It involves drilling a starter hole 2xD deep with a short drill first. I set out to do this and got about 1xD deep and heard "crunch". There went one of my two custom ground inserts. I shut stuff down and called it a day. The drill absolutley was not breaking chips at all- Long strings. I called allied the next day and talked with an applications guy told him what I was doing, feeds, speeds, what inserts, etc. He said the inserts I had were not ideal. Frustrating because I know nothing about picking these so called them to tell me what I needed (another guy). Unfortunately they did not offer to send me two more of what I ought to have. They did say that since I only had one part to do just go ahead and set it up for a .05" peck and a .01" retract and that should do the trick. I wound up going to .05 peck with full retract because it still was not flushing the chips always. I got through one part but I don't think the insert would be up to another. The insert they told me to use and I bought was carbide. The new tech svc guy suggested a cobalt insert with their "tiny chip" grind. So next time... Funny thing is that I read as much as i could about spade drilling here on PM before getting into this and came away with the idea that I should use cobalt. I chose carbide based on the suggestions of the first technical guy I spoke with at allied. It was a good education if nothing else.