Labradar at Midway for $625 in stock

if you get the muzzle speed, BC of the projectile and weight you can get speed at various distances. You don't need anything else. the only thing that's going to change that is wind or density of the air in which case a chrony under 1k is not going to be that accurate anyways. not to mention it only does it up to 100 yards. You will be so close doing the math that you are going to be in margin of error using the lab radar anyway. You can literally purchase 4 FX chronys for the price of the Lab Radar after you get it and everything you need. I love my fx chrony and Strelok Pro ftw. :D
Except that BC varies widely from book values.

There are multiple solutions to the problem but a LabRadar gives you highly accurate, direct answers to the question.

I had the chance to put a LabRadar, FX Chrony, and Bulletseeker M4 side by side by side. The data values were pretty consistent when they worked.

LabRadar is bulky, needs to be aimed perfectly, and requires an inertial trigger for centerfire and microphone trigger for airgun to work reliably. It eats batteries and really needs the external battery pack. You do need to select a range (archery/handgun/rifle) but that’s pretty easy. It gives downrange velocity that is quite valuable to airgunners. Bluetooth is lovely but not dead reliable.

The FX is fiddly in that you have to select the right speed range. It wasn’t my unit so I didn’t get to know that issue well but that is a factor. MV only of course.

The Bulletseeker requires the least knowledge but I have found it needs to be aimed properly and seems to like certain positions relative to the muzzle. Still learning it but the sensitivity might be related to atmospheric conditions and how much disturbance appears at the muzzle. Also the Bulletseeker seems to read velocity several feet ahead, and looking at the raw data I think it could improve its velocity calculation method. Bluetooth is pretty reliable but not perfect. Bulletseeker is configured to mount directly to the gun but I run mine mounted to a flexible mini tripod. As I understand it, Labradar back calculates a V0 using the velocity trace.

David
 
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Except that BC varies widely from book values.

There are multiple solutions to the problem but a LabRadar gives you highly accurate, direct answers to the question.

I had the chance to put a LabRadar, FX Chrony, and Bulletseeker M4 side by side by side. The data values were pretty consistent when they worked.

LabRadar is bulky, needs to be aimed perfectly, and requires an inertial trigger for centerfire and microphone trigger for airgun to work reliably. It eats batteries and really needs the external battery pack. You do need to select a range (archery/handgun/rifle) but that’s pretty easy. It gives downrange velocity that is quite valuable to airgunners.

The FX is fiddly in that you have to select the right speed range. It wasn’t my unit so I didn’t get to know it well but that is a factor. MV only of course.

The Bulletseeker requires the least knowledge but I have found it needs to be aimed properly and seems to like certain positions relative to the muzzle. Still learning it but the sensitivity might be related to atmospheric conditions and how much disturbance appears at the muzzle. Also the Bulletseeker seems to read velocity several feet ahead, and looking at the raw data I think it could improve its velocity calculation method. Bulletseeker is configured to mount directly to the gun but I run mine mounted to a flexible mini tripod. As I understand it, Labradar backcalculates a V0 using the velocity trace.

David
I love my FX Chrony. It is far from "fiddly". It literally works every time I pull the trigger. The 3 Amazon AAA batteries last 6 hours + of constant use, it weighs 4.72 oz with the batteries, you can keep it on your gun all the time, I can use it on my bow and my blow gun as well. What's not to like? it's perfect.
 
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