Ok , I know many of you already probably do this but I’m so impressed how this took my load development to the next level and saves TONS of time !! I recently purchased a shot marker for use with my ladder tests . It is a pricy investment but it’s worth EVERY penny !!! I just had to share it for those that may not know about it. There are 4 sonic sensors that record impacts on target and EVEN velocity ( at the target of course )and sends info to a receiver that transmits wi/fi to a tablet or phone . No more worrying about individual targets for each load , coloring bullet tips and so on ! It’s even very helpful for verifying scope sighting at distance accurate within 1mm according to the manufacturer. You can store /edit info also . I just wanted to share with those that may not know about this to help out like I have been helped here so many times !