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GECO · Pistol

GECO JACKETED HOLLOW POINT 9mm Luger 8,0g

0.900BC (G1)
124.0gr8.04 g
362m/s1188 fps
526J388 ft·lb
ManufacturerGECO
Calibre9.02 mm (.355")
Bullet weight124.0 gr  ·  8.04 g
Ballistic coefficient G10.900
Ballistic coefficient G7not published
Drag model usedG1
Muzzle velocity362.0 m/s  ·  1188 fps
Muzzle energy526 J  ·  388 ft·lb
Sectional density0.140
Form factori1 0.156
CategoryPistol
SourceGECO website 2026-07-02 (verified)

Reading these numbers

Only a G1 ballistic coefficient is published for this load, so BallisticApp solves it against the G1 drag table. G1 BC drifts with velocity — the figure below is valid near the muzzle and drops off as the bullet slows.

Muzzle energy of 526 J (388 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.140 describes weight per unit of frontal area; divided by the ballistic coefficient it gives the form factor, which is how much drag the shape adds over the standard projectile.

Among the 11 loads of this bore diameter in the database, this one's G1 BC of 0.900 is higher than 10 of them.

Similar 9.02 mm (.355") loads

Turn this into a drop table for your rifle.

These figures are the bullet's starting point. What you actually dial depends on your rifle's zero, the air you're shooting in and the wind on the day — BallisticApp solves that on the phone, offline, using the same G1/G7 tables and this database.

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