With the IQ set to Jpeg Large Fine the buffer capacity is a maximum of 63 images. The maximum number drops if the ISO is set to Hi 0.3 or higher, High ISO NR is on when the ISO is 800 or higher, or Long Exposure Noise Reduction or Auto Distortion Control is On. If the IQ is set to NEF + Jpeg fine Large the maximum buffer capacity is 7 images with the same restrictions as above. It sounds like you may be shooting Raw + Jpeg. Good Luck and Enjoy your Nikons!