Hey Chronograph manufacturers

[jps2486]

Can you divulge the measurement tolerance for your instruments?? Is it plus or minus 10 percent, 5 percent or what? By what standards are these instruments calibrated? Is accuracy affected by temperature, barometric pressure, or any other external influence?

 

[Peashooter]

I Am now using the nate chrony steadyshot, Nate claim

• Accuracy: calibrated to be within 1fps of actual pellet speed at 1,000fps from a certified set of master chronographs
• Resolution: <0.1fps shot to shot at 1,000fps

 

[Raider03]

I Am now using the nate chrony steadyshot, Nate claim

• Accuracy: calibrated to be within 1fps of actual pellet speed at 1,000fps from a certified set of master chronographs
• Resolution: <0.1fps shot to shot at 1,000fps

That's impressive, but watch it won't be enough to keep some from making spurious comments.

 

[Peashooter]

There are down sides, the nate gear need a external power source, but as i only shoot bench this do not worry me.
I also think if you do not chrono all the time it should not worry.
On a +, well maybe for some you do not ned to install a APP, you connect to them like a web page.

I chrono a lot so i tend to put it on and then take it off 8 hours or so later when i have run out of ammo.

I could not live with the universal mount, or using the 1/2-20 screw on adapter the noise.
The universal mount work just fine but the looks, so i had to chop / chop and made my FCM / Franken Chrono Moderator.
Which in my book look a lot better.

The bare bone steadyshot with screw on adapter, do not mind the 2 shiny parts on top that is spacers i put there.

The FCM, all largely enclosed in a CF pipe.

The business end, have a huge hole to make sure it can vent shot air just fine, and no problem, the hole through the steadyshot is plenty large.
I like big things, just too bad i can not shoot them, or reach inside my pants to find them.

 

[Avator]

I'm not so much worried about accuracy as I am consistency. I only have one chronograph and tune/check based on the info it gives me. I tune for accuracy and shot count (efficiency), not for power.

 

[Treefrog]

I don't know about the others, but the Caldwell says accurate to .25% on the box. I can't imagine that temp or pressure can have much effect on the instrument itself, but they sure can on the rifle/pistol.

As Avator said, consistency is most important.

Cheers,

J~

 

[Peashooter]

That’s how i feel too, but of course if you are using a ballistic app or digital scope with that i suppose you do need bang on actual speeds.
The freaky speeds i am getting now and then using any brand chrono, those are down to inconsistencies in the tin, i have chambered and fired scraps around 10 grain lying among my 13 grain slugs fron Zan.

Also once gotten a 0 reading CUZ the .22 slug i found in my .177 tin would not go into the single shot tray.

Just give me good shot 2 shot readings and i am ok, and all the chronos i have tried will do that,,,, maybe with a slight nod and wink in FX direction.
CUZ using those i have several times gotten a weird speed reading but my shot have been bang on so the speed must largely have been OK just got a bogus one called from the FX APP.

 

[Raider03]

I'm not so much worried about accuracy as I am consistency. I only have one chronograph and tune/check based on the info it gives me. I tune for accuracy and shot count (efficiency), not for power.

If the accuracy is off the tuning can get confusing. Why are these pellets unstable at 830fps, I know that shouldn't happen. Check the gun or lower velocity. If you know your $30 chrono could be really low then it's not confusing. I had this happen with my Caldwell. Purchased a Garmin and realize that my 950fps tune with the Caldwell was actually over 980fps on the Garmin. Turned the speed down and my groups reduced in half. Maybe this is a one off.

 

[Peashooter]

O yeah, no matter what your " gauge " say, shoot whatever speed your rifle do best at, i see speeds as only a general pointer.
My Two i some times shoot at just 96? fps but the day after 990 might be better for me, even if using same chrono and tin of ammo.

Also my nate chrono do not completely agree with FX, but even with FX old chrono and smalle V2 one i see differences in the speeds they will log.

It is like a steering wheel, you do not steer all the time, most often you are just in the middle making minute adjustments to go strait down that HWY

EDIT: often if i have been shooting 10 gr pellets and so been on a way low REG pressure, transitioning back to shoot 13 gr slugs, i on purpose set off on a low pressure i know will not give me the speed i need, and then i slowly work my way up from there to make sure i am not missing some secret " gem " speed. so often probe speeds between 880 - 1000 fps for the 13 gr slugs that is my general stuff.

I remember earlier in the season i found a speed way lover than the target, but things flew pretty dang good there, so i shot like 3-400 shots there before i moved on.
I think the reason might have been a freshly cleaned barrel, CUZ i have revisited that speed since then but not had the same " that’s interesting " feeling.

It could of course also just have been the weather, some times it mess with me, and i swear i shoot the best in wind VS the days where there are almost no wind or there is a little wind but it switch a lot.
Give me a fairly constant wind from 1 direction and i feel the best.