Thread: Whats the bees knees? Chrony

I should have added 'and barrel diameter' to the unaffected bit.. .

Originally Posted by Gibo

Is the magneto speed the barrel mounted one? Wouldn't the muzzle blast fuck them up??

They use two electro magnetic sensors, measuring the interruption of the EM fields by the metallic bullet. That's why they are unaffected by environmentals.
I used mine for the first time the time the other day. I've never used a chronograph before, it was certainly as easy to use and reliable as advertised. As for the POI change I couldn't really answer, in my case as the rifle is new to me and not a tack driver. I'm accepting that if need be, I'll run speeds separate from any groups. I don't really shoot any groups anyway.

I did have to send the first one back as the LED display was buggered on arrival. Also, I hadn't considered the erosion on the bayonet from the muzzle blast. The wear from a single session wasn't out of this world, but hopefully was part of the design consideration.

Just wrap 2 layers of electrical around the forward end of the curved section. I think it is only a cosmetic issue myself.

Good idea, I'll give that a whirl next time.
I agree with it being minor and cosmetic.

Originally Posted by Moutere

They use two electro magnetic sensors, measuring the interruption of the EM fields by the metallic bullet. .

Also been using mine a lot lately for 22RF ammo tests. (unfortunately my EM332 loves the expensive SK Subs!) The MS detects lead bullets quite happily as well. You just need to change the bullet type to "slug" and take care to get the gap between the sensor and the bullet path to a minimum and away it goes.