Thread: Windplex reticle explained?

What happens when you shoot 500yards and have a 10mph wind left to right? The Leupold windplex is 1inch per hash mark with a total of 10 inches at 100yards. Does the 1 inch become 5 inches at 500?

They are 1moa marks so if I have 10 mph at 500 I need to hold 4.1 moa = 4 dashes

@DBD, yes 1 MOA = roughly 1 inch @ 100 yds and 5 inches at 500 yds

Originally Posted by Gibo

They are 1moa marks so if I have 10 mph at 500 I need to hold 4.1 moa = 4 dashes

It's 1 MOA per hash marks AT max magnification

If you are at a lower magnification, the has marks are larger - second focal plane reticle

OK cool, so looking back on the past weekends gong shooting. We used a 8 inch blanking flange and hanged it off a traffic management sign frame.
Shooting my 6.5 creedmoor with 130gr TGK av 2790fps @ 540yards.
Strelok recons 18 inch / 3.3 moa horizontal correction for 10mph wind.
So somewhere between 3rd and 4th?

If the ballistic app is telling you 3.something, and you are at max magnification, then yes.

Gauging wind strength is one of the hardest things to do. Even with a wind meter like a kestrel, you only get it at the location.

Have a look at Thomas Haugland on Youtube (Norway on here), he had some good wind estimation techniques (in m/second) looking at vegetation. Terrain can have a massive impact, if you are shooting over a gully, the flight path is normally in faster wind than what you see at ground level.

In very rough terms 1 m/s is about 2 mph

Easiest way is to have a decent backdrop, and lots of people looking for the shot fall. Then use your reticle to measure the size of the correction and apply it. Having a brake etc on the rifle helps a lot with seeing shot fall.

Yes the wind was gusty and dead calm at some times. The shots was flat overground into a the base of a hill so through the scope you could see the long grass waving around. The 8inch flange was pretty small so full power on scope.
Thanks for the info, will sus it out

@DBD Try and find yourself a dirt or clay back drop for longer range shooting. Highly helpful as you can see where your bullet lands off target and you can make corrections from that. With practice it will help you read wind better. Skid sites are great for that. Some skid sites in Marlborough can allow you to shoot 1000mtrs.