[Baldo_the_Don]

Playing around with the MP7 and P90, I had an idea about drag tests. Changed P90 error, stability, and recoil for testing, velocity 1000, min_stable_velocity 0, error 0, tumble_error 0, drag 0.001, weight_in_grains 1000.

The best data my quick testing got is the rounds got 16m out and dropped immediately, within about 20cm.

Mass did not affect trajectory. Did affect damage. Standing against a tall stack of crates and firing straight-ish up so the rounds fell on top of it, at 1000 grains, 63 rounds destroyed the crate stack. At 2000 grains it took 29. 10000 grain rounds did it in 6.

Drag at 0.0001 seemed to have no effect, but checking it again just now, the rounds got out to 130m, then dropped. Then drag 0.00099, sysdump. Back to 0.0001, sysdump. Velocity to 500, ok, 999, sysdump.

Hm.

At velocity 750, drag 0.0001, 12m to drop.

Drag over 1 is inscrutible. Velocity 100, drag 10000, firing aimed as up as possible, the rounds landed 350m away. At drag 1, they landed 314m away. I may have aimed differently, but I doubt it.

All that as an aside to my MP7 and P90 problem: Neither weapon, with realistic velocities and weights, is a one-headshot kill at any range. With small increases in velocity and weight, they could be. I'm torn.

And this latest version of my ACOG is honestly my most authentic. The horizon is 110 mils wide, the center 20 mils are clear, the 10 and 5 mil divisions are correctly scaled for this magnification.

Two things:

1. The BDC I drew goes out to 1000m. Trijicon's official .pdf download for the 4x32 RCO M4/M150 Chevron Reticle goes to 800m.

2. I gave this weapon 5x magnification, which makes things 6 times bigger, 'cause some ACOGs make things six times bigger, but not the one the military uses. Authenticity demands 4 times bigger. In NL games, 3x mag. makes things 3.55 times bigger. 4x mag. makes things 4.77 times bigger. 3x mag. is mathematically closer to four times bigger than 4x mag., but 3.55 is 89% of 4, and 4 is only 84% of 4.77 (wait, that still argues for 3x mag. Grrr.).

My problem is that reducing the zoom will make close quarters less difficult combat, but the reticle will be an unreadable mess. I'm torn.

Edit: Yeah, an ACOG at 3x mag. is a bit of a mess, but I don't hate it. I drew the reticle to Trijicon specs and after bumping the velocity up from 850 to 910 and the drag down from 0.375 to 0.27, I was hitting all the test targets reasonably well, even though the hashes are a bit of a smudgefest.

We'll see how it goes.

Edit again: Put up a screenshot of the ACOG 3x with a clearer background.