Thread: What's going on here??

Originally Posted by superdiver

Got him to measure the drop at 200m and it was 18cm so that worked out to about 2380fps~ which is closer to the last shots. Only a pro chrono so not very trusting

Correct me if I'm wrong but the difference between 2480fps and 2380fps at 200m is only about 1/4 MOA (weather and atmospherics aside). Looking at the group in the first picture it doesn't look to be holding anywhere near that mate so measuring drop at 200m and making a velocity assumption based on that (where the rifle is not grouping well enough to give a "yes" or "no" between your two potential velocity ranges) may not be the most accurate. I'd be looking to do so at his max intended hunting range and adjust accordingly.