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Cheap, accurate chronology

386 Views 10 Replies 8 Participants Last post by  Ohiocoot
Any recommendations? Would be used seldom, don't want to break the bank, but needs to be accurate.
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I have the Caldwell Ballistic precision premium kit. Sounds fancy but it is not. It was about $150. You can look it up online. I can’t attest to how accurate it is as it’s the only one I ever used. If I am on my game its very consistent. It came with a nice case, tripod and light bar. I have shot rifle over it and it is very consistent at that. I think it is a very decent unit. The down side it is not heavy dury and the housing is plastic. Not flimsy but it doesn’t resonate high quality from that perspective. I use it at home and in the yard. Occasionally i take it to the range. I expect it to last a long time given I don’t really knock it around alot.
I have had a Pro Chrony for well over 30 years and they are less than 150.00 and I have seen them for 100.00 on sale. I think they are a must have for serious archers. When it comes to traditional archery they are depressing🙁.
I use a Pro Chrony. It is very repeatable when shooting arrows with a shooting machine. It displays to the nearest mile per hour. There are others that will display more significant figures, but that is more accurate than you can shoot. It is not possible to address accuracy unless you have a calibrated standard to compare to. Precision is the best measure to rely on without multiple chronographs or lab equipment. Hitting the same number when shooting with a shooting machine is a pretty good test. Also, keep in mind that these numbers are relative. As long as I have a repeatable chrony then I can be pretty certain that my 160 fps bow is faster than my 150 fts bow. I won't know if it is faster than a 158 fps bow measured using a different chronograph. Experimental conditions can also impact accuracy and precision. Lighting is very important. As such, I use the IR light attachment whenever I have an available power source, even outside. It makes a big difference. I can tell when it is dusk is approaching by a change in the precision of the readings.

Conclusion: accuracy to 1 fps is beyond fine for any archery application. Precision is more important since it sets the size of the uncertainty in the measurement. Most chronographs are more precise than an archer is repeatable. Unless you are really good you will probably need a shooting machine to tell how precise your chronograph really is.
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or shoot a bunch - write it all down - toss out highs & lows - using the most often repeated numbers.
I tend to shoot 10 arrows and toss out 2 high speeds and 2 low speeds.
and like alluded to above, I tend to use mine for relative comparisons, HERE, "my bow against my other bow" - not for absolute truth of speed of my equipment, kind of a general quest for knowing "is it fairly fast or a total dog?" NOT to totally compare against others' bows and speeds found on their chrony.
Thanks, gents. Hank, thanks for the accuracy v precision brief. Much obliged.

Is Pro Chrony the one made by Competition Electronics? Any sense in going with the DLX model?
Thanks, gents. Hank, thanks for the accuracy v precision brief. Much obliged.

Is Pro Chrony the one made by Competition Electronics? Any sense in going with the DLX model?
Yes and no.
I have the competition electronics prochrono. The cheaper model that sells for about $100. One of the keys to getting consistant readings is to put LED lights on the sunshades. It is the only way to get it to work indoors, and gets rid of the err readings due to shadows outdoors. Nothing extravigant, just some portable $2 lights from next to the checkout at harbor freight.
Has anyone used the little one that mounts on the stabilizer bushing??
LUIS, yes it's what I use. and if I test with NO STAB bushing I rig a mount with = you guessed it - duct tape.....or clamp it to a sawhorse and shoot over it.
RADARCHRON I think is the name of it. I just googled it and now it's called Arrowspeed by Radarchron.
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I use the pro chrono for both my rifles and bows, I was kinda sad when I shot my long bow compared to my recurve the other day, recurve was 30fps faster. The muzzle blast from the 300 win blue the plastic piece from the display out once as well
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