Anybody try the new MagnetoSpeed V1 or V2 muzzle mounted chronograph?
I am an engineer/inventor and designed my first digital chronograph in 1986 for my personal use but never marketed it to the public. It got damaged in a household move and I never bothered to rebuild it.
I use a Pro Chrony now which works OK though I have no way of testing its accuracy other than trajectory tests over different ranges and ballistics programs which all do seem to match pretty well.
The MagnetoSpeed has the advantages listed in the advertisement, but I would guess that hanging something that heavy on the end of the barrel would change its harmonics like the integral BOSS by Browning or the rubber one (can't remember the name) sold in stores that you mount and slide forward and rearward to tune the barrel for a given load. This would change the POI and accuracy, wouldn't it?
The rounds I shoot through my chronograph are also used for accuracy and POI tests!
Also, I'm wondering if being so close to the end of the muzzle it would get so dirty from powder & gasses that the sensors would need to be cleaned.