I have drilled in a proshop before and am trying to get my own rig setup here at my home.  My 1-1/4" drill bit seems to be drilling the hole just a tad bit larger than it should however...  The slug goes in with finger pressure - when I worked in the proshop we had to tap a hammer on it to get it seated all the way.  I ordered a bowling bit from bowlingindex.com, and the hole is nice and smooth and cuts the surface of the ball nicely - no jagged areas where it broke through the coverstock.  The drill press is new too - its a Delta 17-965 with a 3/4HP motor.

I was thinking to maybe take it to a machine shop and have them grind down the bit slightly?  Any ideas/help would be greatly appreciated.

Dan

Thanks for the reply - it is got enough back pressure that it makes the popping sound like when your thumb fits really well.  It won't go all the way down in the hole without a little bit of pressure, and you can feel the air vacuum when you push it down.  So that's enough pressure then?