lefty315
Handloader
- Sep 29, 2004
- 950
- 501
Just curious from those who use one frequently. Will you get different readings on a cloudy day vs a sunny day? If so, which is the better day to obtain your more accurate velocity? :?:
chronograph readings
- Thread starter lefty315
- Start date
I always use the sky screen and never gave it much thought.
I don't get many errors either. Maybe 5 errors and half were due to the cord not being plugged in all of the way.
They say to use the sky screens on sunny days with blue sky because the bullet is more "visible" against a white background.
I don't get many errors either. Maybe 5 errors and half were due to the cord not being plugged in all of the way.
They say to use the sky screens on sunny days with blue sky because the bullet is more "visible" against a white background.
- Nov 4, 2004
- 25,745
- 10,198
Depending on your chronograph, bright sunny days may give you some no readings.
JD338
JD338
bullet
Handloader
- Dec 26, 2007
- 4,975
- 20
old #7":27spb0hg said:
+1 on old #7 comments.
Antelope_Sniper
Handloader
- Jan 25, 2008
- 2,618
- 0
Mine doesn't like bright sunny says. It reads much better on overcast days.
remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,806
- 404
I use a cronograph extensively for developing loads. Its nice to see how fast there going, where the nodes are for velocity, you can use it as a guideline for pressure, just a great all around tool to use and have. I dont know what I'd do without one. Mine also does a little better on cloudy days. And yes, you will see a difference in readings on sunny days vs. cloudy days. I have found that sunny days will usually yield a higher velocity, while the cloudy days usually give a lower velocity. I very rarely get errors, cant remember the last one I had. I do know that mine doesn't like to work period late in the evening. I haven't exactly figured out why, but it just wont give an accurate reading, if one at all...
remingtonman_25_06
Handloader
- Nov 17, 2005
- 2,806
- 404
temp will also play a role in your velocity readings, forgot to mention that in my above post.
- Oct 30, 2004
- 24,509
- 3,732
More or less (with very little deviation) unless huge temp changes, velocities are identical.
I use and love a CED Millenium.
In my experience, the issue boils down to whether or not both sensors are getting the same amount of light (assuming sufficient light exists for recording).
If one of the sensors is in shadow, and the other is not, you may have a problem. If the shadow-sunlight interface crosses one or both sensors, you will have a problem.
I guess what I'm saying is that for me things work best when the same intensity of light hits both sensors evenly.
Brian
In my experience, the issue boils down to whether or not both sensors are getting the same amount of light (assuming sufficient light exists for recording).
If one of the sensors is in shadow, and the other is not, you may have a problem. If the shadow-sunlight interface crosses one or both sensors, you will have a problem.
I guess what I'm saying is that for me things work best when the same intensity of light hits both sensors evenly.
Brian
