Although there were always more ways he could increase the accuracy of the technique, he ultimately gave up on it. The problem was that the principle of diminishing returns made it simply not worth the investment. He would have to spend an incredible amount of effort in overcoming many obstacles for benefits that were simply too insignificant to justify the efforts.
In fact, the second phase of the ODA System was almost verging over the limit, however, it was because Rui was quite keen on extending his maximum distance at which his aim was fully accurate well beyond the norm. After all, the first phase of the ODA System would merely give him accuracy of the best marksman.
Of course, this was still a great boon and an incredible development, however, Rui was not satisfied with this alone knowing he could go much further, thus he had resolved himself to push himself further to obtain even more extraordinary results.
