LabRadar Question

[CatShooter]

I am not clear on why knowing my 6mm bullets are traveling at xxxx fps at 86 yards is of any more use to me than knowing they are traveling at yyyy fps at 4" from the muzzle (as obtained with my Magnetospeed V3).

+2

I will still need two chronos to do much of my testing.

 

[amlevin]

I was at the Shot show today and talked to them. They are looking at the next 2-3 months to start taking orders.

Their delivery schedule is looking more and more like Boeing's was for their 787. Every week see different posts giving "expected dates" that are farther and farther into the calendar. Weren't shipments supposed to begin in January???

 

[jlow]

Knowing drop in bullet speed at distance helps you to calculate true (vs. published) BC for bullets.

 

[michaelnel]

Knowing drop in bullet speed at distance helps you to calculate true (vs. published) BC for bullets.

Thanks for clearing that up. It's clear then that for me, there is no benefit at all.

 

[bdale]

I am not clear on why knowing my 6mm bullets are traveling at xxxx fps at 86 yards is of any more use to me than knowing they are traveling at yyyy fps at 4" from the muzzle (as obtained with my Magnetospeed V3).

I'm not sure but I believe what they mean is that it has the capability to pick up your bullet that far from down range from your muzzle, still going to give you your FPS just as any other chrony, once it crosses your chrony your chrony is done this unit has the ability to measure it at a greater distance, just my opinion on Doppler radar, could very well be wrong but this is the way I interpret it's function.

 

[jlow]

From the demo, it looks like you can set four different distances for the unit to measure velocity. So when it is done, you get 4 velocities, one at each of the chosen distance.

 

[charcher]

I'm looking forward to seeing owner reviews on the Labradar. If it works well with minimum messing around setting up,( I'm a hunter and I do sighting in and load development using the car bonnet as my bench) I want one. 8)

Kevin

 

[Randy L]

I'm looking forward to user reviews as well. My load development is done at a public range with shooters on the benches sometimes on either side of me. My concern is whether or not the LabRadar will be triggered by their shots and give me false readings. If this does not happen, I'll be ordering one. I've been holding off getting a Magnetospeed for 6 months or more waiting on this dern thing to be released and reviewed.

 

[amlevin]

Knowing drop in bullet speed at distance helps you to calculate true (vs. published) BC for bullets.

I have a $6.88 "app" for my android device that allows me accomplish the same purpose. Zero the rifle at 100 yards. Enter muzzle velocity (using cheap chrono) in ballistic's program, calculate elevation for long distance shot, then shoot. Measure error in elevation based on bullet strike above or below aim point.

Go to truing function and see the corrected bullet speed for your next shots. You can also play with different BC's in the program to see what changes would eliminate the error in elevation for that first shot.

 

[js223]

I have a $6.88 "app" for my android device that allows me accomplish the same purpose. Zero the rifle at 100 yards. Enter muzzle velocity (using cheap chrono) in ballistic's program, calculate elevation for long distance shot, then shoot. Measure error in elevation based on bullet strike above or below aim point.

Are you saying you'd put on ~15MOA (whatever the app said to add for elevation) on the scope for the longer distance and shoot it? Because the scope may or may not move exactly the expected amount for a given number of clicks, so some error could be induced with that method. I think that a more accurate way to do it would be, after you zero at the longer distance, test at 100yds with the longer zero and see how high it really is at 100. You'd then be able to make a pretty good bc calculation since you'd have real world trajectory from 2 distances.

 

[amlevin]

I have a $6.88 "app" for my android device that allows me accomplish the same purpose. Zero the rifle at 100 yards. Enter muzzle velocity (using cheap chrono) in ballistic's program, calculate elevation for long distance shot, then shoot. Measure error in elevation based on bullet strike above or below aim point.

Are you saying you'd put on ~15MOA (whatever the app said to add for elevation) on the scope for the longer distance and shoot it? Because the scope may or may not move exactly the expected amount for a given number of clicks, so some error could be induced with that method. I think that a more accurate way to do it would be, after you zero at the longer distance, test at 100yds with the longer zero and see how high it really is at 100. You'd then be able to make a pretty good bc calculation since you'd have real world trajectory from 2 distances.

The scope is a NightForce and once I have "trued" the velocity I find that it provides exactly the amount of elevation I set at all the intermediate ranges. When zeroed at 100 yards and then "trued" at distance, I shoot targets at various ranges using the ballistics calculator for the new elevations. So far the bullet hits these intermediate targets right where they are supposed to.

As the old saying goes "works for me 8)"

 

[js223]

The scope is a NightForce and once I have "trued" the velocity I find that it provides exactly the amount of elevation I set at all the intermediate ranges. When zeroed at 100 yards and then "trued" at distance, I shoot targets at various ranges using the ballistics calculator for the new elevations. So far the bullet hits these intermediate targets right where they are supposed to.

As the old saying goes "works for me 8)"

So you are basically saying that your scope tracks as expected, that's a good thing to have.

 

[amlevin]

So you are basically saying that your scope tracks as expected, that's a good thing to have.

At the price, it's a great thing to have.