The RG Rumble is the latest symmetrical in the HP2 Line. I used the Storm VLS system and the drilling came out to be 4 5/8 x 3 1/4 3 1/4. My pap is 4 up 1 1/4.
The Rumble is a very smooth and controllable ball. Its a ball reaction that will allow you to play straighter through fronts and predictable move off of the spot. It has a medium to slower response to the friction. Similar reaction to the RG Riot, but I think it is a hair stronger than the Riot. The Rumble will be a good fit for medium house shots. Probably would steer away for the real dry conditions or really tight conditions, but there are other balls for those patterns. I think the Rumble is good for when the lane conditions can spotty or tricky as it will help smooth out the reaction.

Another great ball from Roto Grip King of Them All.

Brian Watson
Storm/RG
Amateur Staff