Offset red dot zero.

**markm** · 06-04-13, 15:50

Originally Posted by jaxman7

What has me confused is that with a 25 yard zero why would it be almost 3 inches high at 50?

The bullet is coming up SO MUCH to hit POA at such a short distance that it's overshooting at 50.

**jaxman7** · 06-04-13, 15:58

Originally Posted by markm

The bullet is coming up SO MUCH to hit POA at such a short distance that it's overshooting at 50.

That's probably it mark and thanks. I've always ran a 50/200 yard zero and I guess the results on paper at 25 had me a little dumbfounded.

-Jax

**markm** · 06-04-13, 16:01

Yeah... I mean... look at how far the bullet has to come up to match the height of the sight over the bore in just 25... continue that relatively straight line to 50 and it's way high.

**Ironman8** · 06-04-13, 16:01

Originally Posted by markm

The bullet is coming up SO MUCH to hit POA at such a short distance that it's overshooting at 50.

Yup, 50yd zero allows the trajectory to flatten out more than 25, 75 more than 50, and so on.

For more reasons than just that, I find the 100 yd zero to be about optimal for my usues. Defoor has written up a few things on it as has F2S in his excellent zeroing explanation thread.

**markm** · 06-04-13, 16:03

Originally Posted by Ironman8

For more reasons than just that, I find the 100 yd zero to be about optimal for my usues.

I agree... but for an offset RDS type set up... a more specialized, SHORT distance zero isn't necessarily a bad idea.

**jaxman7** · 06-04-13, 16:06

Originally Posted by markm

I agree... but for an offset RDS type set up... a more specialized, SHORT distance zero isn't necessarily a bad idea.

This was my idea behind the 25 yard zero. Anything past say 40 I'd just switch to the variable. Or so the idea went. If I have to worry for hold over at close distance I could just use the scope.

-Jax

**markm** · 06-04-13, 16:07

Originally Posted by jaxman7

This was my idea behind the 25 yard zero. Anything past say 40 I'd just switch to the variable. Or so the idea went. If I have to worry for hold over at close distance I could just use the scope.

-Jax

That's what I figured... and why I didn't start a big fight over the short zero.

**Ironman8** · 06-04-13, 16:10

Originally Posted by markm

I agree... but for an offset RDS type set up... a more specialized, SHORT distance zero isn't necessarily a bad idea.

I have to disagree with a specialized short distance zero. Main reason why is in my first post in response to Jax.

Without getting into all the possible "real world" applications that we could dream up, I'll just say that I like simple. The simpler that I can keep something and easier it is to remember, the better. If I can have the same holds from my RDS equipped gun to my magnified/MRDS equipped gun (on both optics) and not have to account for holdovers AND unders, then that's a win win for me. YMMV.

ETA: Not fighting, just sharing my opinion...which is worth what you paid for it