I would think that unless you bought two at the same time that it would be nearly impossible. I have a couple of reasons:

 

1. If the balls were made in different runs, they are likely to be slightly different. If they cured for different amounts of time, or at a slightly different temperature, or if the air temp or humidity of the day were different, there is likely to be at least a bit of a noticeable difference in the ball reactions.

 

2. The other reason I don't think they will seem identical to you is that your ball has changed over time. If you really liked the ball at box surface and haven't changed it, the surface is likely to have been changed by the lane in a way that you can't duplicate with a pad. Also the ball has soaked up oil, ever since the first shot the ball reaction has been changing, most of the time very very slightly. However, over an extended amount of time, the ball reaction is probably quite different due to the oil soakage. Maybe not different in a bad way, because the changes have been very slight, and you've been very happy with the ball the whole time and have adapted to liking the now changed ball reaction.

 

Chances are, overall, if you are simply in love with your current ball, if you buy another and punch it the exact same way and put it at the exact same surface, you won't see the exact same ball reaction, and will like the new one less.

 

Getting another of the same ball isnt a bad idea still. I'd reccomend going with a slightly different layout or surface, so that you aren't expecting the exact same reaction as your old one. This way you're a lot more likely to give the ball a fair shot based on expecting a different reaction, and I'd say are likely to love it just as much as the original, just in a different way.

 

Hope this helped. 

I have done this on occasion, usually intending for the second ball to be an exact copy of the first (hence no changes in surface or drilling) ,and had mixed results.  First time I bought a 2nd Storm Triple X, which turned out to be a pretty good copy of the first one. Also bought a second Storm Triple Extreme, but it was only 15lbs, vs it's 16 lb "older brother, making comparisons difficult. Also have 2 Hammer Angers, but the second one has a short pin, and whether it's perception or reality, doesn't seem as potent as the original.

 

On the other hand, I have two Ebonite Raids, and they are both equally as effective, and so similar in reaction, that I literally got them mixed up and do not know if I'm using the first or the second one.

 

Then...  there's the Track 607A (pin up) that I fell in love with and wanted to duplicate, but stupidly told the driller to make it a tad stronger. I meant longer and with more backend, but he thought I wanted earlier roll and drilled it with the pin to the right of my ring finger, and although the ball is strong alright, it was no longer anything close to being a copy of the first ball.  Not the driller's fault.  My fault.  But a disappointment just the same.  Recently, I purchased a 718A, and had it drilled to react similar to the 607A (the first one!).  It doesn't have that many games on it yet, so maybe it will settle down, but so far, it's nothing like the first 607A.  I DID know it was a bit stronger to begin with, but figured with the same drilling and with some useage, that it would start to more closely resemble 607A number 1.

 

Well...  that's my experience with duplicating balls.  The jury is still out for me, but maybe it will help put things in perspective for others considering such a purchase.

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I did this and it worked for me, i never noticed a difference in the bals. Cant hurt to try it.