Just curious as to what you guys are using and the pros and cons.  I'd like a labradar but those guys are real proud of their products.  I've read that magneto-type chrono are the most accurate and less problematic but can alter POI (doubt that would be an issue in load development).

I like to get multiple sources of feedback, so throwing this one out there...

I tried using my friends Magnetospeed on my No. 4 but wasn’t able to get it to register bullet velocity. There are spacers to get it to sit below the bore at just the right distance and I didn’t have time to mess with it.  The tapered forend might have been the problem, so may need a shim to get the sensor parallel to the bore. I’m sure it could be made to work. 

I have the Shooting Chrony "Beta Master". They made (note past tense) several versions. this one has the line printer, multiple memories & so on. It has the big advantage that the electronics are not downrange in the sky-screens box! The only bad thing I have found about them us that the metal "legs" for the sky screens are way to strong. a bullet impact on one will wreck the box as they're blasted out of it. I simply cut them about 1/2" up from the box & join the rest with a  them with 3" sections of drinking straw! This creates a weak spot that prevent that happening

They're out of business now but you might find a used one.

One thing I did discover researching for one is to be careful with those that attach to your barrel! Rifles with wood to the muzzle like the Enfields have trouble aligning them because the design assumes a bare barrel!

I'm in Australia and there doesn't seem to be too many on the second-hand market at the moment and when they are, they are still quite pricey.  A SH Labradar was my initial search point and I then worked out from there.  I don't do social media but I wonder if any SH units on FB are from downunder. 

You are correct, sir! ConservSpeak for "Peoples Republik Of Kaliforniastan"! If on "marketplace" on FarceBook then they should list a location &  ship/no ship /pickup only info.

Most chronos that use downrange components intentionally make them minimal & inexpensive, all the Heavy hitting is done in the base unit on the bench. One reason why I pocked the Beta master, its screens are minimal. The only real problem is the rods as mentioned earlier. I had someone blow my entire downrange setup to pieces with idiotic rapid fire on a chronograph. Replacement cost was under US$ 20.oo

There are a couple second hand LabRadars on Snipers Hide in the classified section. Maybe you could find one there.

I have my old Competitive Edge Dynamics M2 Chronograph that I could part with but, shipping would be cost prohibitive.

I was thinking the same with my Chrony.

Shipping to & from Oz is a bear.

Customs too, they'll hammer you to just let it into the country.

I got a single screw from someone I contacted there for a Central Target Sight on Shooting Australia, the shipping & import were more than the price of the screw!

They had a few good write ups & have been around for awhile.

My main issue would be everything downrange & so vulnerable to a bullet strike.

To be fair I've never actually had one with either of my chronographs in probably 20 years of firing over them.

I did once (first & last time) let someone else check velocity, he was an FBI firearms instructor. So I assumed he was competent. I'm still (5years later)awaiting the replacement he guaranteed me after he destroyed mine utterly.

I actually rigged battery-powered LED strips to the original Chrony sky-screens!

Like you say I doubt there's any support for them though.

I haven't shot a sky screen, ever, so I'll just keep using the thing till something happens & then look at what's available for how much then.

Hands down the best Chrono I’ve ever used. You can now get used Magnetospeeds and Labradars really cheap because of this little chrono. 

Just point it down range next to the rifle and shoot. Works on Doppler Radar principle. 

This is the data for my 600 yard match load for the AR-15 Service Rifle.  80 grain MatchKing and 23.5 gr N140.  I chrono’ed two 10 shot groups and the mean velocities were within 4 fps of each other. 

Stated accuracy is 0.1% of velocity. 

Here is a picture of the infrared LED's added to my older Chrony , their not visible except on my android phone.  Shooting my compond bow in my garage. Excuse the mess...