I just received a 15# Cloumbia Bully and am looking forward to punching her out tomorrow afternoon.  I did not receive a drilling sheet with it.  Where can I find Columbia's drilling sheet for this ball?  I was planning on putting a little polish(not too much, as it's at 2000 grit already) and going 4X4 or 3 3/8 X 3 3/8.  Just wanna make certain there's nothing out of the ordinary to look for.  Thanks.
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My name is John, and I have approved this message.

I drilled one and have 3 games on it. used it on fresh medium house shot.Ball is very strong off of the dry/break point. i drilled it 4x4 with thumb weight and a touch of positive side. Revs up nicely of my hand and seems to take to hand positions well. I also left it out of box condition and will probably scuff it down a touch to 1500-1000. I want it to roll a touch earlier. overall good ball for opening up the lanes and could be used on heavier oil with a good surface tweak. Hope this helps.
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