Re: Review - SuperCHRONO Accoustic Chronograph
Ordered the SuperChrono Friday Aug 16 from Rifles Only, received it Monday Aug 19.
Took it out yesterday and today (Aug 20, 21)
Set up CED Millenium at 10 ft. Then placed the SuperChrono at approx. 12 ft. Realized immediately I could not read the digital screen. Decided to place it between the CED and the bench. At 9 ft would have had to use binoculars and a chair to read the screen. Finally placed it 3 ft in front of the muzzle and 7 or so inches below the bullet's flight path. I could read it AND lean forward at the appropriate time to reset for next rifle.
Shot a 284 win, 6mm-284, 308 and 375 Taylor and got readings for every shot. 4 shots didn't register with the CED. All readings were higher with the SuperChrono due to unit being 3 ft from muzzle. Each reading for CED has same shot with SuperChrono underneath. NR= no reading
CED NR 3279 3289
SC 3310 3297 3316
CED NR 2754 NR
SC 2765 2778 2782
CED 4145 4110 4129
SC 4209 4166 4166
CED 2807 2777
SC 2851 2818
Tried the 7mm/375 Ruger
CED 3046 3040
SC 1817 2342 Now it was 95 degrees quit shooting
Today very dark and cloudy, didn't set up the CED because I knew it wouldn't work :
Took the 284 again along with the 7mm/375 Ruger to be honest too hot at 88 degrees
Really wanted to figure out where to place the SuperChrono to get readings from the 7mm.
Set up chrono at 9 ft where I could stand and with some movement read the digital screen.
The glare from the sun was terrible. Chrono was approx. 7 inches below the bullet's path.
284 3123 2043?? 3159 3149. Remember yesterday's CED reading was approx. 3280 and SC was 3300 fps.
Had some 168s to try 2956, 2926 2906 2952 2933 2929
Previous CED readings with this older load were 2985
(load is 76 gr of RL-33)
Switched to the 180s
83 grs 2851
84 2641 2910 2887 previous readings for 84 grains with CED over several sessions has been 3060- 3070 fps
It quickly became too darn hot to continue. Plus range was too busy to fuss over the chrono.
I called and talked to Rifles Only. They said they had heard others having issues and it was the angle of the unit that had to be adjusted. The guy said Jacob would call me and offer suggestions. Haven't heard from him yet.
I intend to go out again tomorrow and set the chrono out at a greater distance and use my binoculars to see digital screen. Will also try some other setups with chrono lower and higher than 7" from bullet path. If I cannot get results it will be returned and I'll buy the lighting system for the CED.
Positive comments: records every shot with smaller rifles, small and lightweight, controls easy to use.
Negative comments: hard to read, controls on unit not very useful with others shooting at busy range, inconsistent results, no readings with greater muzzle blast.