The Garmin Xero C1 Pro Chronograph measure the velocity of bullets, arrows, in fact anything small that flies at speed! It comes in an industry leading small form factor. The question is, does it work, is it tough to set up and can it compare to other larger, more expensive options. I have put this unit through its paces. It has been roasted at 48 celcius, blasted by a 50BMG muzzle brake and saturated in the Welsh hills. Check out the full review to see how it works and if it stood up to the abuse!

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