With your gun sighted in at 50 yards you can see the trajectory of a 9mm 124 grain round.
When it is sighted at a 20 yard zero you have this accuracy to 30 yards. Even at 40 yards it is only one inch low.
This is a smaller chart with the zero at 10 yards.
I hope this helps you with knowing your gun and its capabilities.
Makes it clear why most manufacturers deliver with a 25 yard zero.
Went from 1x to 3x for an optic on my 9mm Stribog (8” barrel) as the drop at 100 is minimal. 9mm is really a fun range day caliber.
Is it wrong for me to assume a 115 grain 9mm would have a different curve?
They are basically the same. The speed of the bullet comes onto play. If the speeds are the same the trajectory is the same. 115 are usual faster so travel flatter.
Yeah, the lighter, faster bullet wil have a flatter trajectory over the same distance.
Honestly, when shooting at extended distances (100-200 yards) with a handgun, I’ve been surprised how flat the trajectory of a 115 grain 9mm is compared to the massive drop of a 230 grain .45ACP
Also, a note; the length of the barrel determines the muzzle velocity.
115 grain 9 mm
| Range | Elevation | Elevation | Elevation | Windage | Windage | Windage | Time | Energy | Vel[x+y] |
|---|---|---|---|---|---|---|---|---|---|
| (yd) | (in) | (MOA) | (MIL) | (in) | (MOA) | (MIL) | (s) | (ft.lbf) | (ft/s) |
| 0 | -0.75 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 432 | 1300 |
|---|---|---|---|---|---|---|---|---|---|
| 25 | 0.37 | -1.40 | -0.41 | 0.00 | 0.00 | 0.00 | 0.06 | 378 | 1216 |
| 50 | 0.01 | -0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 335 | 1145 |
| - Sound Barrier (1116 fps) - | |||||||||
| 75 | -2.01 | 2.56 | 0.74 | 0.00 | 0.00 | 0.00 | 0.19 | 302 | 1087 |
Yeah, but apples to apples fired from the same 4.25” barrel with the same powder charge and burn rate,… the heavier slug will drop faster over the same distance because it’s moving slower.
Also, the necessary compression on that chart is ridiculous!
The round starts at 3/4” below the sight line,… and by 70 YARDS out is only 2” below the sight line!?!??? So effectively 2.75” of drop at 70 yards?
That’s pretty flat!
Edit, that’s less than 3” of drop across 2520” of distance….
