Have you thought of possibly calling them? I have heard that some clubs will even leave shooting schedules on there answering devices. BTW ... they do show a shoot schedule which there next shoot is April 21st. Since you know how to use google I will take it that you would also know how to calender of events tab and then click on the registered trap link to answer your question of when there next registered shoot is.
BTW ... your question is lacking in detail but it sounds like your actually asking for a very detail specific answer. You ask when does Sandy Run shoot again butr now it actually sounds like your clarifying your original question as to when are they going to make up a canceled shoot from this past weekend. Is that the question your meant to ask? Your first question sure doesn't get that particular ... if that is the question your asking please forgive my lack of mind-reading skills as to the actual question I was answering and to the lack of answer to the question you were really asking.