I have my beat'n drilled with the number 4 i believe...about 5" pin to pap, hart in track. My buddies beat'n is drilled #1, and when i throw both of them, the biggest difference is where on the lane it starts. his is quite a lot earlier, but both of them have a great backend.
I'd say if you're going to be usuing it on a medium oil ths, i'd go with #4, if you're going to be using it in heavier and/or longer oil, go with #1. Definitely don't need anything stronger than #4 on ths.
overall, the beat'n is a fantastic ball. you definitely won't be dissapointed. either way you drill it it will provide good length with a very hard-arcing backend. that plus the hammer hit/carry that we all know and love and you've got a phenominal ball.
Matt
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http://www.hammerbowling.comhttp://www.hammerstuff.com"Nothing Hits Like A Hammer"
