Anyone else own the F-1 Chrony ?

[jp9mm]

Just picked one up, using it to test my pistol rounds.
Set it on the bench and began shooting my .22lr about 1ft away from it and it was reading fine 1100-1300. Took out my 45 and i start getting readings of 1600, 2300, 4400

moved 5 feet back and still read about the same or ERROR, then i got right on top of it and it started reading 700-800 where it should be.

Going to give it another go next week, just looking for others experiences with this chrony.

 

[cfullgraf]

I have had Chrony's that unfortunately expired from lead poisoning. But they worked fine until then.

The powder flash can affect the reading for close in stuff. For rifle, close is not very close.

The position of the sun can affect the reading.

The sky can affect the reading.

Reflection off the ground can affect the reading.

Generally, I set the unit out 10 feet or so for handgun, 15 to 20 feet for rifle.

Read the instructions on setting up the chronograph. Chrony's instructions are fairly good at indicating some of the issue you might encounter on the way to getting good readings

 

[buck460XVR]

Just picked one up, using it to test my pistol rounds.
Set it on the bench and began shooting my .22lr about 1ft away from it and it was reading fine 1100-1300. Took out my 45 and i start getting readings of 1600, 2300, 4400

moved 5 feet back and still read about the same or ERROR, then i got right on top of it and it started reading 700-800 where it should be.

Did you read the instructions that came with it?

From the owners manual.....

6. Chronographs should be at least 10 feet (3 m) from the muzzle of a high-powered rifle, but can be closer to guns with a lesser blast. Five feet (1.5 m) is about right for .22 rimfire firearms. Shotguns should be fired at 5 feet because of the spreading pattern of the shot and errant wads.


C. HANDGUNS: When shooting sub-sonic ammo, the muzzle blast will get to the Chrony before the bullet, which may cause erratic numbers. Increase distance from Chrony.

 

[mitchz]

Buck is right read the instructions. I Use a tape measure to set mine at 10 feet and get very consistant readings, that gives you accurate comaparisons between round and different weapons. If you use it for black powder go 15 to 20 feet. I have blown mine over with my .58 at higher loads.

 

[gamestalker]

With loads that are subsonic the problem can be that it is reading the sound waves, rather than the projectile if you are too close to the defusers. Try shooting through it from 15' or so, no closer. I have one and it reads very consistently provided I'm not too close, the sun is not interfering, and know when to use the sun shades, when not to. They won't read accurately if the sun is to low in the sky also.

GS

 

[mokin]

I've had one for about four years now. It has taken a little getting used to but if I set mine up abou 15 feet away I can consistantly chronograph shots from pistols and carbines. Rifles need to be further back. And, on rare occasions, I just can't get it to work. What I really like about it is, if I shoot it I feel I've got my money's worth and would probably buy another to replace it rather than going with a more expensive model.

Be safe, have fun, and remember, if you shoot a wand, you can whittle a piece of dowel down to replace the one you shot.

 

[murf]

i always set my chrony 12 feet from the muzzle. no problems with pistol or rifle.

4400 fps for muzzle blast. interesting!

also, best to shoot at a target when using a chrony. keeps the shots over the same spot on the chrony. too far up, down, or sideways will affect the reading.

good luck,

murf

 

[fallout mike]

I have one. Refer to buck's post.

 

[stavman11]

I have one... works Flawless with my Ar15 and 15-22

Be sure and read the setups... i keep mine 10' away and have never had issues

re-read, Re-setup and ya should be dialed



Stav

 

[Salmoneye]

Mine is 20 years old and gave up the ghost recently...

Time to 'upgrade'...

 

[Onward Allusion]

Mine works fine. Set it up further downrange. BTW, use wooden dowels instead of the metal rods.

 

[rbernie]

I have had Chrony's that unfortunately expired from lead poisoning. But they worked fine until then.

The powder flash can affect the reading for close in stuff. For rifle, close is not very close.

The position of the sun can affect the reading.

The sky can affect the reading.

Reflection off the ground can affect the reading.

Generally, I set the unit out 10 feet or so for handgun, 15 to 20 feet for rifle.

Read the instructions on setting up the chronograph. Chrony's instructions are fairly good at indicating some of the issue you might encounter on the way to getting good readings

This mirrors my experience. I use the corded remote, and found that its cord provides a natural 'set-to' distance between the bench and the chrony.

 

[mgmorden]

I use a different brand (ProChrono Digital), but its pretty much a given with a chrono that you want to be at least 10 ft back.

 

[rogn]

Grocery store bamboo skewers make good sky screen holders. Its only a matter of when you shoot the metal ones. Problem comes from the shock transmitted from the struck metal-it can damage the electronics.

 

[DanTheFarmer]

I used 1/8" wooden dowels. The problem was they weren't strong enough and the diffusers were flopping around. I solved the problem by reinforcing the dowels. I cut another dowel a bit shorter and taped it to the middle of the longer dowel so they still had 1/8" portions at each end. I may work on a more elegant solution but this worked at range yesterday.

Another post in a different thread recommended welding rods.

Good Luck,

Dan