I use shooter also and it works great. Like RaceTire said, if the signal doesn't hack it then take your best guess and enter the data manually, it'll be close enough. Everything with a ballistics program is an approximation, a few degrees and being off 20% on the humidity is only going to make a tiny difference. The error induced in the equation by using G1 BC's like in the chart above when you should be using G7's is much more than being a bit off on the atmospherics.
