Labradar is a new bullet/pellet radar tracking instrument.
I bought one of the first batch and yes, to me in Australia, it was expensive. BUT there is no way I will/can shoot it dead as I have done to three other "chronographs" so in the long run it may prove cheap.
JSB .177 Heavies and TM 1000 were used.
10 pellet strings were shot at each of 7 different velocities from Average 703 to 893 fps.
The average velocities of each 10 shots was recorded for V0 and V20 yards (also at V3, V20 and V22 yrds).
The average velocities for each 10 shot series at V0 and V20 yrds was computed into a ballistic coefficient BC using both Chairgun and Steve NC calculators.
The correlations between the derived BCs and the relevant velocity averages are recorded in the chart. Each data point being the average of ten shots, (70 shots in all).
Am wondering what 750 fps will bring; and 920 fps if I can get it with this gun and pellets.
Using 8.4 gr JSB I can get well up the 900s fps with the TM 1000 - another day.
It would not be wise to draw any conclusions about longer range data from this preliminary 20 yard test. But a glance at some of the other data suggests the pellets are doing better between 3 yd and 22 yd than from 0 to 20 yd. ... pellets "settling down"? Well we will see as time and opportunity allow me to play farther. Previous work I have done measuring velocities with chronographs to 50, 100 and 200 yards has suggested the trend to better BC continues to 100 yards and perhaps further with best pellets in best conditions.
The Labradar is working trouble free for me so far for the .177 TM 1000 used in this experiment- being easy to adjust for velocity; FX Elite .22; BSA .25 Hornet and a Benjamin 342 .22 pumper. Yes I do read the User Manual and follow the instructions!
However it eats AA batteries. My answer is to plug it into power with a mobile phone mini USB charger here at home. But I intend buying a laptop battery re-chargeable storage charger for use outdoors at the farm. 10 Ah at 5 V should be plenty.
Kind regards, Yrrah.
I bought one of the first batch and yes, to me in Australia, it was expensive. BUT there is no way I will/can shoot it dead as I have done to three other "chronographs" so in the long run it may prove cheap.
JSB .177 Heavies and TM 1000 were used.
10 pellet strings were shot at each of 7 different velocities from Average 703 to 893 fps.
The average velocities of each 10 shots was recorded for V0 and V20 yards (also at V3, V20 and V22 yrds).
The average velocities for each 10 shot series at V0 and V20 yrds was computed into a ballistic coefficient BC using both Chairgun and Steve NC calculators.
The correlations between the derived BCs and the relevant velocity averages are recorded in the chart. Each data point being the average of ten shots, (70 shots in all).
Am wondering what 750 fps will bring; and 920 fps if I can get it with this gun and pellets.
Using 8.4 gr JSB I can get well up the 900s fps with the TM 1000 - another day.
It would not be wise to draw any conclusions about longer range data from this preliminary 20 yard test. But a glance at some of the other data suggests the pellets are doing better between 3 yd and 22 yd than from 0 to 20 yd. ... pellets "settling down"? Well we will see as time and opportunity allow me to play farther. Previous work I have done measuring velocities with chronographs to 50, 100 and 200 yards has suggested the trend to better BC continues to 100 yards and perhaps further with best pellets in best conditions.
The Labradar is working trouble free for me so far for the .177 TM 1000 used in this experiment- being easy to adjust for velocity; FX Elite .22; BSA .25 Hornet and a Benjamin 342 .22 pumper. Yes I do read the User Manual and follow the instructions!
However it eats AA batteries. My answer is to plug it into power with a mobile phone mini USB charger here at home. But I intend buying a laptop battery re-chargeable storage charger for use outdoors at the farm. 10 Ah at 5 V should be plenty.
Kind regards, Yrrah.
