I am a Columbia300 staff member with a hi rev rate and am right handed . i love this ball.. My 1st one I drilled with large drill angles....80 x 5 x 70 which puts the pin under my middle finger and mb swung left of the thumb in my track. It reads very clean through the heads and reads the mid lane perfectly with very predictable smooth arcing backend reaction and still hits like a truck.
My second I used my favorite 50 x 5.5 x 60 which puts the pin over my middle finger and MB kicked out to the right of my thumb. This 1 is very very strong kept dull ... After about 20 games i polished it up with ebonite factory finish and it definitely went longer and flips hard is an understatement.
Columbia300 definitely got the coverstock / weightblock combo right with this one... much better performance than the Pure Physics
"COLUMBIA BOWLS THE WORLD OVER"