Discussion Forums

David Sluiter

Hi guys,

Long time forum lurker here, and after reading up on the Sightron scopes I finally got my pennies together and purchased a Sightron SIII 6x24x50 (SFP) LR MOA-2 to mount onto my Remington 788 in .308 win.

The rifle is zeroed for 200 metres firing a 150 grain SST @2600 ft/s.

I'll make it clear up front - maths is not my strong point :) so I'm looking to see if anyone can help explain how the MOA-2 reticle works.

If my target is at distance and given enough time - I plan to use the turrets and simply dial-up the required MOA. However, should the situation not allow for this, I'd like to be able to use the reticles so I could select the appropriate hold-over using reticles.

According to the data tables that came with the scope, at max power (24x) the MOA distance of one reticle spacing is 2 MOA @ 100 yards.

Seeing I would only be using this maximum magnification setting at long range (say anything over 400 meters), I am trying to figure out how much MOA each one of these spacing equates too at different magnifications/distances.

Here is my mathematical problem - and apologies up front for what is coming:

Say my target is at 300 metres, and I have the scope set at 9x. The rifle is zeroed at 200 metres. Sightron's data tables tell me at 9x the MOA distance of one spacing is 5.3 at 100 yards.

Now I believe 1 MOA at 100 metres is roughly 3cm, so at 300 metres 1 MOA would be @ 9cm.

Does this mean that at 300 metres - and using 9x- one of these spacings equates to 5.3 MOA x 3 (for the 300 metre distance) = 15.9 MOA or @ 143 cms!?

Any help in explaining how this reticle works would be greatly appreciated.

Cheers

David