Calibrating a suspect Chrono

[20series]

Is there a way of getting a chrono calibrated??

Whilst trying my new toy today I was chronoing the loads, someone commented they thought it was probably reading high due to the speeds. I was getting 2580fps from my 210 SMKs with 42.5 gns Vit 140

One of the guys put a round from his through it which read about 100fps quicker than he reckoned it should be :(

Any (polite :lol: ) suggestions

Alan

[Christel]

Have you not got the manual?

I am fairly certain that we can calibrate ours, using the manual that we very likely cannot find.

Also, I could be way wrong here but that speed sounds about right for that load.

[ovenpaa]

What make of Chrono is it? Light makes a difference, did you have the screens fitted and have it at least ten feet out? Also it needs to be stable.

[20series]

It's an F1 chrony, I've found the instructions and there is nothing in there about calibration

Yes I had the screens on, but the light was fairly dull today,

however now thinking about it It may have been a bit close. I used to shoot the old set up with the moderator on at about 8 feet and obviously this is different. It's going to be down to operator error by the sound of it .

for the help

Alan

[Christel]

Ovenpaa says they can't fly that fast with that weight. Ignore me.

[ovenpaa]

Actually I thought Christel said 2850 not 2580. Still 2580 seems rather optimistic by a good 200fps for 42.5 grains if N140.

[dta europe]

Hi Alan, after thinking about it, it may well have been too close.

I am more than happy to bring the 35p and we can shoot through them both in series and see what results we get.

regards

Ewen

[Robin128]

Ewen,

Welcome to the forum.

What guns do you like to shoot?



Rob

[dta europe]

Hi Rob,

Sorry just joined recently today and have not posted an introduction yet.

My preference is for long distance rifles generally in the Tacticool variety. I have gone through lots from customs to Accuracy Internationals and an now shooting DTA SRS's which I liked so much I now import and distribute them ;-)

I also am a keen game shotgun shooter, practical shotgun shooter and pretty much anything else that goes bang.

regards

Ewen

[20series]

Rob

He has some very nice toys to play with

Hi Alan, after thinking about it, it may well have been too close.

I am more than happy to bring the 35p and we can shoot through them both in series and see what results we get.

regards

Ewen

Ewen

I might take you up on the offer, I've picked some Vit N550 today so I'm going to chuck some loads together and see what happens, I think I'll try my Chrony again but make sure it's far enough away this time.

Alan