Chronograph set up for testing in prone position

[dickn52]

Magnetospeed affects accuracy, so only good for obtaining speeds and no more.

I use an Oehler 35. Screens are mounted on a 1x6 that I just put on the ground and shoot over it.

Disagree. It will move the point of impact on target but the "accuracy" of the shots fired is not compromised. You just can't use the shot pattern for sight adjustments and rely on the point of impact to remain consistent when the bayo unit is removed. But it's not a sight adjustment instrument; it's a chronograph.

Sorry, but what does a slight bench shake have to do with velocity of a projectile travelling through a light tunnel?

 

[Joe R]

After seeing Elwood prone chrono rig I decided that I wanted to go that way too. Today I finally made a first version to test on Tuesday. I'm a minimalist so I reduced it to the least components. The hole I drilled is nice and tight to keep the chrono straight. If it is the proper height I will cut out legs and reduce weight.

Kindest regards,

Joe

 

[Erik Cortina]

After seeing Elwood prone chrono rig I decided that I wanted to go that way too. Today I finally made a first version to test on Tuesday. I'm a minimalist so I reduced it to the least components. The hole I drilled is nice and tight to keep the chrono straight. If it is the proper height I will cut out legs and reduce weight.

Kindest regards,

Joe

Joe, use a 1x6 cedar board and attach all the sensors to it. All you need to do is drill 3 holes for the sensors and done. It will be lighter and take up less room.

 

[Joe R]

Thanks Erik,
I just used this treated wood because that's what I found in the garage, but I do like your idea of using lighter and thinner wood.

Joe

 

[Erik Cortina]

Thanks Erik,
I just used this treated wood because that's what I found in the garage, but I do like your idea of using lighter and thinner wood.

Joe

But you need to use only one piece of wood. Run it parallel to the pipe that holds the sensors.

 

[Joe R]

I'm not sure I understand. Do you have a picture.

 

[Erik Cortina]

Run the 1x6 under the pipe that holds the sensors. Make it as long as the pipe that holds the sensors now and attach them in three places using the screws that would attach to the tripods.

Take the one you made, lay the boards flat and then rotate them 90° and fill in the gap that you will have in the middle. Use a 1x6x48" long and that should take care of it for you.

 

[Lapua40X]

Magnetospeed affects accuracy, so only good for obtaining speeds and no more.

I use an Oehler 35. Screens are mounted on a 1x6 that I just put on the ground and shoot over it.

Disagree. It will move the point of impact on target but the "accuracy" of the shots fired is not compromised. You just can't use the shot pattern for sight adjustments and rely on the point of impact to remain consistent when the bayo unit is removed. But it's not a sight adjustment instrument; it's a chronograph.

How can it move point of impact but not affect accuracy? How can a tuner change accuracy but the magnetospeed can't when they are both a weight on the end of the barrel?

I'm defining "accuracy"' here in the context of the ability to repeatedly put the shots at the same point
on target shot after shot. Perhaps I've used the wrong term. My point is that, although you will probably find that your shot group with the Magnetospeed attached to the rifle is somewhat higher than it is without the chrono. in place, the group size will remain consistent.
I've talked with a number of shooters shopping for a chrono. who have doubts about the Magnetospeed because they've heard it affects accuracy. They don't seem to understand that it is not intended for use as a sight adjusting apparatus; it's a chronograph. That means it provides muzzle velocity information; you take it off to make sighting adjustments.
Sorry if I confused the issue or misused the noun.

 

[Erik Cortina]

Magnetospeed affects accuracy, so only good for obtaining speeds and no more.

I use an Oehler 35. Screens are mounted on a 1x6 that I just put on the ground and shoot over it.

Disagree. It will move the point of impact on target but the "accuracy" of the shots fired is not compromised. You just can't use the shot pattern for sight adjustments and rely on the point of impact to remain consistent when the bayo unit is removed. But it's not a sight adjustment instrument; it's a chronograph.

How can it move point of impact but not affect accuracy? How can a tuner change accuracy but the magnetospeed can't when they are both a weight on the end of the barrel?

I'm defining "accuracy"' here in the context of the ability to repeatedly put the shots at the same point
on target shot after shot. Perhaps I've used the wrong term. My point is that, although you will probably find that your shot group with the Magnetospeed attached to the rifle is somewhat higher than it is without the chrono. in place, the group size will remain consistent.
I've talked with a number of shooters shopping for a chrono. who have doubts about the Magnetospeed because they've heard it affects accuracy. They don't seem to understand that it is not intended for use as a sight adjusting apparatus; it's a chronograph. That means it provides muzzle velocity information; you take it off to make sighting adjustments.
Sorry if I confused the issue or misused the noun.

I know what you mean, but my question is: How can it affect point of impact but not group accuracy? If it affects POI that means it has an effect on barrel harmonics, which would also impact group accuracy.

 

[savageshooter86]

Anyone have an "update" on the LabRadar?

 

[Elwood]

Anyone have an "update" on the LabRadar?

Copied from another website

"Unfortunately we just got more bad schedule news. They are now telling
us that our first large shipment is expected in September."

They also noted, "It worked very well for the guys but as we had heard from another online
review, they had trouble getting consistent readings on small caliber
rounds. When we gave it a quick try before sending it off to our
writers, Len and I noticed that the sensitivity setting wasn't solving
the problem of neighboring shooters at the range triggering unwanted
readings as it should have. We recently received a software update that
is said to solve those two problems. We haven't had a chance to load the
update and test it out yet, but we will. We will email you with our
findings when we do."

They also note and conjecture, "At this point I don't pretend to know what is causing the delays. I
imagine that some time was lost cleaning up the issues that were
discovered by folks like us."