Thread: CDS/Chrono Question

I love my CDS - I used a 10 round average over a chrony and took the average.
(factory ammo)

Works great for me!

Thanks All, really helpful and I will take it all into consideration. I’m definitely going to try and get to a long distance range, it just makes sense that if the 400m bullet drop matches the chrono’d muzzle velocity then I’m on the right track. Btw, longest shot would likely be 400m, 300m currently my longest and only once as I was just not able to get any closer. Not sure where to find one near Dunedin, the Bruce Rifle Range doesn’t seem to answer calls or emails, might have to make a trip to Invercargill.

As time goes on I have experienced more scenarios where a long range shot (400m +) would be necessary, I watched a wounded tahr limp up and over a ridge, stopping side on occasionally. And sometimes they just spot you and that’s as close as you’re gonna get, any movement beyond moving into a prone position and it’s game over!

Personally I wouldn't go for a cds. With paired ballistic apps these days that you can put a ballistic curve into they are just as fast as a cds. Range, get moa from range finder dial moa.
This also gives you the flexibility to change loads projectiles etc. I think this is particularly relevant when using factory ammo that is highly likely to change over time.

A lot of the time in-the hills its not feasible to use a phone due to light, wetness, time and so on . This is where the cds dial or the drop chart taped to the rifle butt are invaluable.

Originally Posted by Bagheera

A lot of the time in-the hills its not feasible to use a phone due to light, wetness, time and so on . This is where the cds dial or the drop chart taped to the rifle butt are invaluable.

If you have a rangefinder or binos with built in ballistic data you don't need a phone or piece of paper on your stock. The rangefinder gives you a range and then shows what moa to dial. Dial that into your scope. Job done. Very hard to muck up.
The great thing with this system is that you can also have more then one set of data for each rifle. I have one load for long range deer and one for goats. With a cds you are fixed with one load. All I need to do is change which curve I'm using using my phone and then it is stored. Can be easily changed during a hunt if need be

I run the leupold 1400i range finder, itbjas load groups built in, match up the load group with the drops on the provided chart compared against what your ballistics app on your phone tells you and it's near enough out to 400 yards. Anything longer range than that and you have the time to work out the solution on your app anyway. That said, the variance in velocity you are seeing won't be enough to change you poi at 3-400 yards enough to miss of make a bad shot. Equally, you should validate this at the range in order to know exactly what you're rifle is doing at distance.