Shooting Chrony Chronographs

[BRNG 525]

I have a shooting Chrony chronograph, I believe it is a Gamma model. I am just wondering how many of you out there have used one of these chronographs and what you honestly think of them. The data I get is consistent from load to load but the velocities seem considerably higher than what is published in the reloading manuals. Since I am the only one I know that has a chronograph I don't have anything to compare it too. Any feedback information would be greatly appreciated.

 

[Brentster7189]

My old man has one, and last week we tested some shotgun field loads that he had reloaded. There was only a variance of about 50fps, which seemed pretty good to me. I know he uses it for rifle reloads too and they are even more accurate on those.

 

[shortside]

When I got mine, I shot it with another chrony, and compared data with 22 lr standard velocity ammo. I recorded the velocity, and kept 3 boxes of this ammo with the chrony. Now if things are funky, I can re-check to see if those loads are shooting near the recorded velocity (same gun, obviously) to check it. My handloads are all a bit on the slow side, even the warmer ones, according to the chrony, so I al ways take it with a grain of salt. Checking long-range ballistics will verify your velocity and other variables better than the chrony will. I use my Chrony for tunign the loads, then shoot paper to tune my ballistics charts.

Sunlight/overcast/etc all make a difference in how well my machine sees the bullet, and therefor the velocity.

Good luck!

 

[MNHunter]

I have the Beta. My velocity reading were too high as well. I called them and they said to be at minimum 18 ft out in front of the rifle barrel. I go 20ft out now and have gotten better readings.

 

[KRasmussen]

I borrowed and used a master F1 chrony the other day at the range and had some very puzzling results. I had a few rounds that measured out well under what the others were at, some under 900 fps. Most of my loads were around 2800fps and then all of a sudden dropped to 900. I also had 4 go the other way, well over 4100 fps. How does that happen? There is no way I could ever get 4000 out of a 7mm rem mag.
I think they give a ball park, general idea of speed but as for 100% accurate, I dont think so.