Recently picked up one of these and at first I was a little frustrated with the tracking only because I didn't have all the correct information to put into the Strelok App. So today I wanted to do a tracking test and I'm very happy with the results and my confidence has been restored. If your looking for a less expensive scope that works. This works. The gun is a 45 smokeless muzzleloader shooting a 250 grain bullet at 2760 fps.