GECO · Rifle

GECO EXPRESS .222 Rem. 3,6g

0.219BC (G1)

56.0gr3.63 g

951m/s3120 fps

1641J1210 ft·lb

Manufacturer	GECO
Calibre	5.70 mm (.224")
Bullet weight	56.0 gr · 3.63 g
Ballistic coefficient G1	0.219
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	951.0 m/s · 3120 fps
Muzzle energy	1641 J · 1210 ft·lb
Sectional density	0.159
Form factor	i1 0.725
Category	Rifle
Source	GECO 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 1641 J (1210 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.159 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 206 loads of this bore diameter in the database, this one's G1 BC of 0.219 is higher than 108 of them.

Similar 5.70 mm (.224") loads

GECO EXPRESS .223 Rem. 3,6g56 gr · BC 0.202 · 1010 m/s .223 Rem. SOFT POINT 3.6 g56 gr · BC 0.207 · 1000 m/s Barnes TSX, 223 Rem, 55 Grain, Barnes Triple-Shock X Bullet (TSX), 3200 fps55 gr · BC 0.209 · 975 m/s Federal Training, 223 Rem, 55 Grain, Full Metal Jacket, 3240 fps55 gr · BC 0.269 · 988 m/s Power-Shok Rifle, 22-250 Rem, 55 Grain, Jacketed Soft Point, 3650 fps55 gr · BC 0.208 · 1113 m/s Power-Shok Rifle, 223 Rem, 55 Grain, Jacketed Soft Point, 3240 fps55 gr · BC 0.222 · 988 m/s

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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