[Baldo_the_Don]

Shall I explain?

The inside of the large ring on the P90 sight is 180 moa. 3°. The HMWWV wheels, center to center, are 1.80m.

3 ÷ 360 = 0.0083333

1.8 ÷ 0.0083333 = 216.00086 ÷ 6.2831853 = 37.377604

So 3° is 1.8m about 37m away.

In-game, got in front of a HMWWV, dropped a repair request on the left front tire, adjusted my position, dropped another, adjusted, dropped, adjusted, dropped, repeat 'til the distance changes from 36m to 37m. Then backed up a tiny bit and made a screenshot.

Opened the screenshot in Photoshop. Measured from the inside of the left tire to the outside of the right tire: 59 pixels.

I draw all these modded sights to match the HUD units: 800×600. I play at 1280×720. 720 ÷ 600 = 1.2

59 ÷ 1.2 = 49.166666.

I need to draw the inside of the ring 49 px wide. I want the outer ring to be 2px thick, so I add 4 to 49 and that's 53.

Complete the graphic, make the modifications, get back in the game, now we test the size.

49px = 180 moa. 53px = 194.69387 moa ÷ 21600 moa = 0.0090136

HMMWV is 1.87m tall. 1.87 ÷ 0.0090136 = 207.46427 ÷ 6.2831853 = 33.018964.

According to the math, the ring and the HMMWV should be the same height from 33m away. I refer you to the screenshot attached. I think the ring might be a half pixel too large, but considering that from having the idea to draw a P90 ring sight to making that screenshot took me about half an hour, I feel okay about that half pixel margin. Note that I aimed at the left edge of the windshield to drop the repair request, so the distance is from the windshield, not the front of the HMMWV.

It's not often in my life that I know exactly what I'm doing and can present evidence of that knowlege, and I find the sensation thrilling, to be honest.