Ballistic Calculator
- Thread starter Bogatyrs
- Start date
Yes, absolutely. The .22LR has a trajectory like a mortar round; the elevation change requirement from 100 to 125 yards is a full mil (6 inches at that range). From 175 yards to 185 yards is half a mil (5 inches at. that range).
There are lots of threads here about coaxing .22LR rounds to match predicted ballistic calculator curves. I use Strelok Pro with the Lapua drag curve for Lapua Center-X ammo and it's good out to 400 yards, which is the furthest I've shot paper.
Welcome to SH. There's a gold mine of info here; just keep your feet out of the occasional piles of crap. You'll learn to spot them!
There are lots of threads here about coaxing .22LR rounds to match predicted ballistic calculator curves. I use Strelok Pro with the Lapua drag curve for Lapua Center-X ammo and it's good out to 400 yards, which is the furthest I've shot paper.
Welcome to SH. There's a gold mine of info here; just keep your feet out of the occasional piles of crap. You'll learn to spot them!
The answer may depend on your scope. Duplex reticle? SFP? FFP? Elevation & windage turrets? Either Mil or MOA benefit from a calculator.
If you're getting hits at 200 and happy with your outcome, then why a calculator?
For me at 200yards, I'm at 7.1 mils ( 24 MOA). The 22lr has a lot of drop at longer ranges so getting the right elevation dial or hold is critical, IMO. I use the Strelok Pro and use for both rimfire and centerfire.
If you're getting hits at 200 and happy with your outcome, then why a calculator?
For me at 200yards, I'm at 7.1 mils ( 24 MOA). The 22lr has a lot of drop at longer ranges so getting the right elevation dial or hold is critical, IMO. I use the Strelok Pro and use for both rimfire and centerfire.
Unless you have the luxury of placing a target at any distance needed to gather precise POA-POI differences to build your own chart you will find a calculator invaluable.
Similar to a post above my 200 yard dope with CCI SV is 7.6 Mils, the prediction was 7.0. If I tried the conventional way of holding top of the paper with a 50 or 100 yard zero the impact would be completely under the target frame.
Similar to a post above my 200 yard dope with CCI SV is 7.6 Mils, the prediction was 7.0. If I tried the conventional way of holding top of the paper with a 50 or 100 yard zero the impact would be completely under the target frame.
Thanks good in put. One question is using the data on the manufacturers label worth while. I don't think it is worth investing in a chronograph but without one it seems the info from the calculator will be seriously flawed.
Be interested in your opinion.
MIke
Be interested in your opinion.
MIke
Manufacturer info is a starting point.
I do chronograph with a LabRadar which honestly is just going to show you just how bad velocity variation is with rimfire. Given you are going to be subsonic right from the start, BC is where any truing will made. Doubly so given it is what changes with how .22 bullets can get mangled during the loading and firing process.
Ballistic chronograph allows you to understand why your results vary shot by shot.
It's a diagnostic tool that explains where those strays are coming from.
Gundata.org/ballistic-calculator/ is a free web based app that can provide most
of the information needed for trajectory prediction.
It's a diagnostic tool that explains where those strays are coming from.
Gundata.org/ballistic-calculator/ is a free web based app that can provide most
of the information needed for trajectory prediction.
With Strelok Pro you can select the exact ammo for the calculation and that has all the info needed, BC, speed, etc. You won't need a chrono to get going - nice to have but not to start.
The results you get from the calculator may be spot on or you may have to 'true' the result for your conditions. You can do that with StrelokPro.
No - I don't have stock in StrelokPro but I sure depend on it.
The results you get from the calculator may be spot on or you may have to 'true' the result for your conditions. You can do that with StrelokPro.
No - I don't have stock in StrelokPro but I sure depend on it.
Thanks again Chuck,
Darn, I was hoping with you being a "shareholder" I could get a discount! Seriously that is great info and I truly appreciate you taking the time to respond.
MIke
