On this classic Blue Hammer, take a look at pictures #2 & #3 and see if you notice what's wrong.    Unless that ball is horribly mis-marked, the driller should be shot, LOL!

Clicky:  http://www.ebay.com/itm/16LBS-BLUE-HAMMER-FAL-VINTAGE-BOWLING-BALL-/271036491089?pt=Bowling&hash=item3f1b08a551

Pin no mattah either.

not 100% sure but it looks like it could have been an axis weighting gone horribly wrong....

It doesn't matter where the holes are put because "THIS BALL IS HIGHLY VALUED AS THE BALL OF THE CENTURY."

Any ball that good can probably strike while still on the ball return... I used to have the Turquoise Hammer way back when, and although it was popular, I'm not sure how any ball gets "ball of the century".

...and can you treat a 0" pin the same as a very long pin (7-8") by "flipping" the pin/cg to the bottom of the ball?

They used to drill Hammers like this up in the 80's to have as much bottom weight as they could get.

Why?

There were tournaments back then that didn't go by the ABC rules, and you could use whatever you wanted.   Some of these tournaments had so much oil on the lanes you could rooster tail the oil.

Guys would take there hammers and put as much bottom weight in the ball to get it to roll early and then make it as dull. 

My guess is this was one of those type of balls.

...thanks JJ 

Also you have to measure a line from the pin through the c.g. and to the center of the grip.  That distance should be 10/12 "

A weight hole is then added around the c.g. area to increase diff and get the bottom weight under 3oz.  Warning, the ball must be thrown first to see where the flare rings are so the weigh hole isn't drilled in the track. 

I used this layout a lot for a 450rpm full roller that I used to drill for and this finally gave him that hockey stick motion from inside where the typical full roller layouts tend to lose angle as you move inside when they break down. 

Usually when the pin is out say 8+ inches you stay with the marked cg and draw a line around the ball to find where the pseudo pin would continue through the ball to the other side and mark it. Usually putting the pseudo pin somewhere much closer to the cg and thus easier to drill.

Doing this with the cg does not put top weight on the other side of the ball. So even if the ball has 1oz top weight(very unlikely) then when you drill the holes on the other side taking weight out you've now created a ball with easily 3+ ozs of bottom weight. This ball is not legal for sanctioned league use at that point. Since the ball is not drilled with finger inserts there is a slight chance if the fingers are drilled shallow and the ball had 1oz of top weight or less it would stay under the guideline of being legal.

If you were trying to put a lot of weight on one half of the ball it would be much easier to find a ball with a high top weight(4ozs) and drill the finger and thumb holes very shallow giving you 2.5-3 ozs of top weight.