I'm at 100 yards now. Not hitting much, but it really forces me to make sure your form and release technique is perfect. Punching the trigger at 100 yards has much worse results than punching at 30. I'm using a case of beer box as a target and judo points so that I can recover my arrows until I can build a 4 x 4 forever target.
My only cautionary tale is this: My first elk season I was confident at 30 yards and trying to work my way out to 40. I would come back to camp around lunchtime and practice at 40 yards. One evening I had a cow walk by at about 15 yards and I, shaking like a leaf, put my 40 yard pin on her and fired even higher than I would've had I been using my 10 yard pin. Never did find her, and I still feel bad about that. The point is, don't get so used to shooting one pin and forget that other pins go with other distances.