You have room to move up. It's worth a try to find your max. If you don't like the results, revert back to what you're comfortable with. The next node is around 77.0 grains if your rifle will let you get there. Work up in .3 increments starting at 76.0 grains and see what your rifle tells you. I'd expect you to gain around 80-100 fps putting you right where you ought to be for a max load with the 215. Who knows? You may even get up over 2900 fps like many on here do with that combo.
My rifle won't let me push to 77.0 with RP brass, but it will with Norma. However, since Norma has more case capacity than RP, the velocity is the same. My max with RP is 76.0, my max with Norma is 77.0. Velocity for both is right around 2840 fps.