Ballistic Calculator

[Capt. NW]

Wife just got me the 5.11 Field OPS watch with sureshot.
I put in my 7mm mag info and started to test it out. I looked at what the watch was saying and compared it to the remington Ballistic program. I was getting some off numbers. I know the watch is point of impact, but the numbers just did not seem right. EX- Zero at 400 yards rem web site tells me to set sights at 6.36 inch high. the watch show -2.2 Can someone explain?

Next I told the watch I had a 25mph wind from 3H it told me to hold 5.7Left. I throught 3H means 3 O'clock which I would think the wind would be coming from the right, wouldn't I want to hold right?
Any info would be great.

 

[JimKirk]

http://www.jbmballistics.com/

I find this to be real close to what I get with my experiences. There are several calculators under calculations at the top of the page. Check against this.

Jimmy K

 

[sscoyote]

Capt.--i've known guys that used that watch before and it's supposed to be very good. The reviews are also pretty good. I bet the company would walk u thru it. I have the old Speedtech weather watch that had a pop-up anemometer on it. Pretty neat system really, and has been resonsible for a couple of long-range shots i made with my rigs. I'd like to have that 5.11 watch tho. Nice to have portable system that's right there if u need it.