I threw this ball last night in warmup for league shot, medium heavy oil house pattern at the South Point. Being the first few shots i threw alittle slower than normal, the first 2 balls took out the 7 pin only i am right handed. Ball is stupid strong drilled pin under ring finger cg right above my thumb no weight hole. Right at 4 1/2 and 4 1/4 area for me, i moved in for a few more shots could not use this ball ball was flaring like nuts as expected. I think heavy oil for this ball is not going to be a big issue, it reacts like there is particle load in the ball. I am sure there is not but this cover will give Rotogrip staffers a ball above the Passion in strength.
Remember i am lower revs around 250 rpm's and around 18 mph, so if i am able to get this type of reaction which is very limited i am sure what the higher rev players will able to produce with this ball.
The SD-73 is easily stronger than the Epic Battle which i have 2 of them and much much stronger than the Horizon Solid. Since it was only about 7 total shots and i was not comparing head too head i can say how much stronger than those 2 balls. I can tell you that i did throw a similarly drilled Brand new Strike Zone and it was about 6-7 boards stronger and much earlier than the Strike Zone.
I can say this ball is one of the strongest balls i have thrown, unless you need help or like too polish a ball up you might want too watch it roll first.