breathn has posted on chrony's , as have ex-wolverine and several others, their advice is good. shoot through the top 3rd of your chrony, if you can't sell it and get a new one, or just add 8 fps.... lol
Had a radar chrono to mount on the bow and for a while it worked just fine...about 6 months. And then the bad readings started. It is a great device but I found it unreliable. So...the pro-chrono was purchased and I have had accurate readings ever since. Cheers!
I have a radar chrono and put a 3" extension on the extension it came with. The puts it about 12" out from the bow. It's been very accurate and consistent since putting that extension on. The key is making sure it is lined up correctly with the arrow path. I have used it to print off sight tapes for several bows and bee on out to 100yrds. Get the same readings as as my pro chrono and is easier to use.
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