Thread: New acoustic chronograph

So I finally got round to testing it next to my ced M2 today.I had it set up right in front of the M2 The M2 is 13ft from the front of the bench and the superchrono was 12ft

And here are the numbers
String 1,2,3,5,6 and 8 are the .222 and 50sp and 4 and 7 are the .243 and 87hpbt
String 1/26.5w748 superchrono
_ 1)_3159.0_ -18.3 1)2972
_ 2)_3195.0_ 17.7 2)3001
_ 3)_3178.0_ 0.7 3)2992
Avg=2988
__ High:_3195.0
__ Low:_3159.0
__ E.S.:_ 36.0
__ Ave.:_3177.3
__ S.D.:_ 18.0
__ 95%:_ ±54.8

String 2/27w748
_ 1)_3206.0_ -15.3 1)3034
_ 2)_3227.0_ 5.7 2)3061
_ 3)_3231.0_ 9.7 3)3051
Avg=3047
__ High:_3231.0
__ Low:_3206.0
__ E.S.:_ 25.0
__ Ave.:_3221.3
__ S.D.:_ 13.4
__ 95%:_ ±40.8

String 3/27.5w748
_ 1)_3267.0_ 17.0 1)3074
_ 2)_3222.0_ -28.0 2)3057
_ 3)_3261.0_ 11.0 3)3074
Avg=3067
__ High:_3267.0
__ Low:_3222.0
__ E.S.:_ 45.0
__ Ave.:_3250.0
__ S.D.:_ 24.4
__ 95%:_ ±74.2

String 4/44.5ar2209 87hpbt
_ 1)_3189.0_ 9.2 1)3005
_ 2)_3174.0_ -5.8 2)2988
_ 3)_3168.0_ -11.8 3)2979
_ 4)_3186.0_ 6.2 4)3011
_ 5)_3182.0_ 2.2 5)2998
Avg=2995
__ High:_3189.0
__ Low:_3168.0
__ E.S.:_ 21.0
__ Ave.:_3179.8
__ S.D.:_ 8.7
__ 95%:_ ±12.1

String 5/25bm2
_ 1)_3233.0_ -0.7 1)3064
_ 2)_3225.0_ -8.7 2)3051
_ 3)_3243.0_ 9.3 3)3064
Avg=3057
__ High:_3243.0
__ Low:_3225.0
__ E.S.:_ 18.0
__ Ave.:_3233.7
__ S.D.:_ 9.0
__ 95%:_ ±27.4

String 6/25.5bm2
_ 1)_3290.0_ 23.0 1)3106
_ 2)_3261.0_ -6.0 2)3087
_ 3)_3250.0_ -17.0 3)3061
Avg=3083
__ High:_3290.0
__ Low:_3250.0
__ E.S.:_ 40.0
__ Ave.:_3267.0
__ S.D.:_ 20.7
__ 95%:_ ±63.0

String 7/44.5ar2209
_ 1)_3183.0_ -8.7 1)3005
_ 2)_3185.0_ -6.7 2)2998
_ 3)_3207.0_ 15.3 3)3018
Avg=3005
__ High:_3207.0
__ Low:_3183.0
__ E.S.:_ 24.0
__ Ave.:_3191.7
__ S.D.:_ 13.3
__ 95%:_ ±40.5

String 8/26bm2
_ 1)_3366.0_ 29.0 1)3159
_ 2)_3341.0_ 4.0 2)3149
_ 3)_3304.0_ -33.0 3)3126
Avg=3143
__ High:_3366.0
__ Low:_3304.0
__ E.S.:_ 62.0
__ Ave.:_3337.0
__ S.D.:_ 31.2
__ 95%:_ ±94.9

As you can see there is a bit of difference here!Next I will test them with the superchrono at the recommened distance according to the instructions which is to be futher from the muzzle then the height from the bore.But from memory when I had it closer last time it still seem slower??

If I read your post correct, you have roughly 200 fps difference between the two?

Yes that's correct.
How have you gotten on with comparing yours Norway?


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The Kurzzeit was stopped in customs before Christmas and haven't been released yet. Hopefully have it done within two weeks. Sooner the better it seems.

Good effort and a decent comparison Dreamer.
200fps is a bit of a bummer.
I have the Ced2 and it seems to be pretty accurate compared with baldbobs Oehler so I think I will stick with that for a while.
One without friggin big wings and could be used in most conditions would have been good.


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Hey
I've followed Norway's trail here, we've sold a few of these to NZ I believe.
I've done a little video of the superchrono in use, and i've had good results with it.
I guess it is important to get it parallell to the bore line, and I've used about 3 meters distance.
Mine has been steady , and cathes all the shots I've fired over it. I've used a .510 whisper in supersonic mode, a 270 Win and a 6,5-284 at about 900m/ sek.
I did have a bit of snag at first as well, mainly due to either placing it to close to another chrono, not sighting it at the target, or placing it to close.
If you lower it to about 30-50 cm below your boreline, 2,5-5 meters out, and aim it at a point 30-50 cm below your target ( same as distance to boreline) you should be good.
take a look at this slightly dated video,
SuperChrono demo and use - YouTube

Originally Posted by R93

Good effort and a decent comparison Dreamer.
200fps is a bit of a bummer.
I have the Ced2 and it seems to be pretty accurate compared with baldbobs Oehler so I think I will stick with that for a while.
One without friggin big wings and could be used in most conditions would have been good.


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Thanks R93,yea a bit dissapointing.
I'll have a couple of more plays but as I said when I did have the superchrono at the optium distance it still seemed slow and the .243 load was right where it was before my sensor crapped out so hmm

Jonesy's one was out a ways on the fast side it seems.
I wonder if they can be calibrated?
Hope you get good customer service if its needed.


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Hmm interesting.Might flick them an email and see what they say.

I use a Kurrzeit which is ok and a good place to start for new loads. However I've found I get better results for working out bullet drop by the "point of impact" test. It never seems to be the same as the chronograph.

The CED2 is good but its better with IR screens, without them in ambient light I still get significant differences. It would be good to see the acoustic against one with controlled light.
Id be happy to do a test if someones keen enough to loan an acoustic one.

Originally Posted by Nzgunner

I use a Kurrzeit which is ok and a good place to start for new loads. However I've found I get better results for working out bullet drop by the "point of impact" test. It never seems to be the same as the chronograph.

Totally agree. I always confirm by firing.
Lots of other variables to consider other than just velocity.
Generally Im on till I get beyond 600 using shooter and known data.
Then a bit of fiddling to get spot on is needed.
I sometimes zero at 600, slip the scales
If its out a smige to what shooter says my elevation should be and find I am pretty sussed from there.



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went to use my one yesterday got all set up and bugga my one had flat batteries
no replacements on hand at that time so just went an blasted some water filled milk bottles

These posts had me worried, so I initiated contact with the producer/ Steinert. A bit short on time so hasty post summing up/abridged version of the answer from Mr Steinert:

The level is being removed from the updated version, it confuses. Use the sights and aim as per instructions. Use the accuracy calculator if needed.
The technology require some getting used to in our experience, most users get proper results after a couple of tries.
If there chronograph measures faulty they'll get a new one of course.

(I got an xls file with an accuracy calculator. Can anyone PM email and host so users can get it? It can be used to calculate the effect from aiming errors etc.)

Now tested against a Kurzzeit PVM21 with my 22 Hornet.
PVM21 avg 749,5 msec vs Superchrono 750 msec.
As soon as I've solved the powersupply problem I intend to test against two PVM21 (need to build a battery pack).
Film coming.