You're fine at 115,,,
The servo throw optimum angles are 60 degree,, once you start going far past that you reach a point where more angle doesn't give you a lot more control surface throw,,Won't hurt the servo, it just produces a non eficiant expo curve at the end of the throw. IMO that's why you always want to set the plane up with arms that come close to that 100% EPA range as possible.

good luck