It should matter what the chronograph says, especially today, we are using much better equipment then years before when you could argue the Chrono was off 25ftps, now this software is changing it by a lot more.
Truing via adjusting the muzzle velocity is a bad way of doing business. The problem is the software, it's using old formulas with known problems they refuse to adjust. Unless you use software that does fix it.
AB hardly true's itself, and in many cases the proper range to true based on the software is beyond supersonic ranges, this week I had an AB Kestrel ask the user to shoot beyond 1800 yards to true it using the DSF. You can fudge it and create a shortcut to true it. But it's bad business. Travel like I do and you see a guaranteed need to re-true the software at the new location. One of the reasons AB rented Raton before the Ko2M they have to true in the location they are shooting.
Hornady using the form factor, ColdBore, Field Firing Solutions and TRASOL all use real muzzle velocity data and have a way to true without changing known facts.
Funny the guys not using the 3DOF apps are inputting the real muzzle velocity right off the bat and experiencing success.
Three answers because they all run the information in a different way. If you figure the Hornady 4DOF software is pretty close to the newest stuff and that was written in 1966, the 3DOF currently used by most was written years prior and 4 DOF was designed to fix a few of the limitations of 3DOF by everyone with a phone swears by the older, more out of date programs.
People, meaning Ballisticians have wrote about it, unfortunately most find it too much work to actually implement it minus a few.
