WEZ hit rates.

[Jordan Smith]

Just pushing buttons in my Geoballistics app with this: But 2/3 of it comes on and off when I toggle "spin drift" and 1/3 of with "coriolis effect" (shooting due north). "Crosswind jump," which I presume is their word for aerodynamic jump, is all in the vertical. Running the same 550 yard scenario as earlier.

Yes, exactly.

 

[wind gypsy]

What makes you think that there’s a horizontal component to the displacement caused by AJ in a L/R wind?

Was pretty positive I recalled reading that a while back. Quick google of it makes my head hurt, open to being wrong.

Assume if there was a vertical component in the wind it would certainly have a windage offset but that's not how the ballistic calcs are typically set up to work.

 

[willfrye027]

Man I had to skip past a lot of the spin drift/updraft/downdraft/breakdance wind math you guys are talking about.

What’s working for me is knowing my gun mph, not shooting if my wind call is too questionable, and most importantly…

Spotting impacts and working the bolt quickly

 

[willfrye027]

About an week ago I decided to shoot a rock at 850 yards midday on a hunt in Idaho. Took my sweet ass time, great rest, felt like I hand a handle on the wind (7-10 mph 90 degrees…my gun is a 7mph gun) so I held about .8 mils off the 5” rock. Bam!! Miss exactly .8 mils left. WTF? Reload quick, smash rock twice with zero wind hold. There was an opposite wind somewhere in there that canceled it out and I did not detect is.

I’m nowhere near “art” wind call but I have zero qualms about a second round hit assuming it’s not a do or die scenario where the animal can easily get away wounded. In that case I stalk closer.

 

[RWT]

About an week ago I decided to shoot a rock at 850 yards midday on a hunt in Idaho. Took my sweet ass time, great rest, felt like I hand a handle on the wind (7-10 mph 90 degrees…my gun is a 7mph gun) so I held about .8 mils off the 5” rock. Bam!! Miss exactly .8 mils left. WTF? Reload quick, smash rock twice with zero wind hold. There was an opposite wind somewhere in there that canceled it out and I did not detect is.

I’m nowhere near “art” wind call but I have zero qualms about a second round hit assuming it’s not a do or die scenario where the animal can easily get away wounded. In that case I stalk closer.

But would the hit have resulted in a dead elk/deer/200lb critter. I assume it would.

 

[Jordan Smith]

Was pretty positive I recalled reading that a while back. Quick google of it makes my head hurt, open to being wrong.

Assume if there was a vertical component in the wind it would certainly have a windage offset but that's not how the ballistic calcs are typically set up to work.

Yes, exactly. Aerodynamic jump is an effect that acts perpendicular to the direction of the wind, so if there is a vertical wind, then you'll see a horizontal displacement, and vice versa.

In this case, we're comparing purely horizontal wind from the left and right, so the AJ effect will manifest as slightly more or less drop at distance, but no effect on windage.

The primary effects, outside of typical wind drift, that impact windage are spin (gyroscopic) drift and Coriolis.

 

[willfrye027]

But would the hit have resulted in a dead elk/deer/200lb critter. I assume it would.

Would have been an ass shot on a deer. It’s not a shot I would have taken in that wind at that distance. I would have still killed it with a follow up or tracking it down..my animal loss rate is 1.4% currently so odds are it would have died…then again it’s not a shot I’d take on an animal.

.8 mils about 2 feet at 800 yards if my math is right so either ass/far guts or miss in front of the animal depending on where it was facing.

 

[huntnful]

This cracked me up because I know this is exactly how @Formidilosus looks everytime he sees me say some dumb shit about shooting or killing animals

 

[Formidilosus]

This cracked me up because I know this is exactly how @Formidilosus looks everytime he sees me say some dumb shit about shooting or killing animals

View attachment 963753

Haha.


Not quite.

 

[mlevimadden]

@huntnful can you compare the hit rates of the same 6mm projectile (108/109 Eldm or 115 DTAC, don’t really care) at 600 yards with the 10x14 elk broadside target being launched out of a creedmoor at 2850 versus a UM/PRC at 3250 with the average shooter and rifle variables (1.5 MOA, +/- 4 mph wind, etc.)

 

[Schmo]

@huntnful can you compare the hit rates of the same 6mm projectile (108/109 Eldm or 115 DTAC, don’t really care) at 600 yards with the 10x14 elk broadside target being launched out of a creedmoor at 2850 versus a UM/PRC at 3250 with the average shooter and rifle variables (1.5 MOA, +/- 4 mph wind, etc.)

I’m not @huntnful, but I ran the numbers. With the UM speed of 3250, you gain a 10% hit probability. Also, you’re a complete mil less elevation to dial with the UM

 

[huntnful]

I’m not @huntnful, but I ran the numbers. With the UM speed of 3250, you gain a 10% hit probability. Also, you’re a complete mil less elevation to dial with the UM

View attachment 968509View attachment 968510

See how your wind correction is .0? Go into the environmentals, and put in like a 10 MPH wind, and you have to direct the wind clock to 90 degrees, in order for the +-4 MPH to actually have an effect

 

[Schmo]

See how your wind correction is .0? Go into the environmentals, and put in like a 10 MPH wind, and you have to direct the wind clock to 90 degrees, in order for the +-4 MPH to actually have an effect

Gotcha. Did that for the 6 UM / 109 combo and it only dropped 1%

 

[Schmo]

Still learning how to actually use AB Quantum. I really like what it offers, but it’s not the easiest to use, as in figuring out what everything is and does. But maybe I’m just simple haha

 

[huntnful]

Gotcha. Did that for the 6 UM / 109 combo and it only dropped 1%

Really? And now it’s giving you an actual decent wind correction underneath the elevation correction?

Still learning how to actually use AB Quantum. I really like what it offers, but it’s not the easiest to use, as in figuring out what everything is and does. But maybe I’m just simple haha

Dude same here. It’s not the most user friendly, that’s for sure. I would never use that shit for actual correction in the field while hunting lol

 

[Schmo]

Really? And now it’s giving you an actual decent wind correction underneath the elevation correction?


Dude same here. It’s not the most user friendly, that’s for sure. I would never use that shit for actual correction in the field while hunting lol

Make sure I did things right.

 

[Formidilosus]

See how your wind correction is .0? Go into the environmentals, and put in like a 10 MPH wind, and you have to direct the wind clock to 90 degrees, in order for the +-4 MPH to actually have an effect

It doesn’t matter for the WEZ. The program assumes you are zeroed for whatever wind speed is shown- doesn’t even factor it. Then it is using a 4mph error +/- to show how much the bullets will drift.
If you are zeroed for a 20 mph wind, and it’s really 24 mph- it will have the same effect in the system as if you say 0 mph wind, and there is really 4 mph.

Or some such.

 

[huntnful]

It doesn’t matter for the WEZ. The program assumes you are zeroed for whatever wind speed is shown- doesn’t even factor it. Then it is using a 4mph error +/- to show how much the bullets will drift.
If you are zeroed for a 20 mph wind, and it’s really 24 mph- it will have the same effect in the system as if you say 0 mph wind, and there is really 4 mph.

Or some such.

Okay gotcha! That makes sense why @Schmo had different wind holds, but the same hit rate when he changed the environmental. Thanks!

You do have to correct the direction each time though no?

I feel like it constantly resets to straight headwind every so often.

 

[huntnful]

Okay yeah just checked it. Definitely have to check wind direction, but makes sense that the entered wind doesn’t have to be a specific amount.

 

[HuntHarder]

WEZ is new to me. Have any if you actually gone out and shot in said conditions, a large amount of rounds and seen how accurate it is? Maybe I am totally misunderstanding it's purpose, but isn't it basically saying the % chance of you hitting within said parameters?