How accurate is Shooters Calculator as a ballistics calculator? I've been using it to try to compare different cartridges and barrel lengths for an upcoming rifle build and just wondering if I can trust the data. I am using estimated average velocities for bullet weight and barrel length and using the feature to compensate for environmentals. Like I said earlier I am just wondering if the data is accurate enough for generalized comparison sake. Once I figure out the rifle I'm going to get a chrono to get good real world data. Thanks in advance.