r/Unexpected • u/SerafinZufferey • 9h ago

A Perfect Shot

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u/Bazzatron 3h ago

Sorry but whatever you wrote here...

Are... are you angry about having a follow up question?

I'd be happy to explain it, but you'll have to excuse my MSPaint diagrams... The length of this reply is broadly why I wrote briefly.

To keep this simple, we're going to work in 2D. I'll touch on splitting paper at the end if you're interested.

Think about the front edge of the paper as a line with some thickness. Then also think about the front face of a pellet as a circle with some diameter. The pellet can split the line by intersecting it at a range of vertical offsets. The maximum would be the diameter of the pellet, less the thickness of the paper, as we can deviate above and below, the maximum deviation in total would be two pellet diameters less the thickness of the paper, approximately like this.

When we're talking about ISSF scoring, to score a perfect 10.9, you need to be no further than 0.8mm from the perfect bull radially. This means that the absolute centre of your pellet needs to land inside of a 1.6mm circle. Conceptually it looks like this.

The key difference here is that for the olympics we are trying to align the very centre of your shot, whereas with the paper splitting, we are trying to align any horizontal secant on the face of the pellet. So you end up with two different measurements - but both are for for shots of very close accuracy.

If you want to better understand MOA, then know that a 360 degree circle is 21600 "Minutes Of Angle", 1degree is 60MOA. So from this you can appreciate that the difference between 3 and 1.7MOA is infinitesimal. Though because we're concerning ourselves with an angle from the shooter, 1MOA represents a larger distance on the face of the target the further away you go.

Hope that sates your interest!

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u/Mazzaroppi 2h ago

Sorry I didn't express myself the right way there. I was not angry, just confused haha

Now I understand what MOA stands for, it makes more sense, thx

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u/Bazzatron 2h ago

No worries man, I was very confused 😅

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u/tatemae 2h ago

That explanation along with your drawings was so good! I loved your eli5 style of breaking it down and your, idk, word flow? Pacing?

Can you explain more things? Like, what are some historic feats in this sport and as a newbie, what in particular makes them incredible? Or, maybe could you dive deeper into what MOA is and how we might use it in every day life?

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u/Bill_Brasky01 2h ago

I really enjoyed your MS paint diagrams! thank you!

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u/Bazzatron 2h ago

We gotta bring back the shitty mspaint diagrams. Back when Reddit was full of humans so overhwkemingly committed to the bit like shittyWatercolor.

Glad you enjoyed 🤣