GECO · Hunting

GECO STAR .30-06 10,7g

0.397BC (G1)

165.0gr10.69 g

824m/s2703 fps

3630J2677 ft·lb

Manufacturer	GECO
Calibre	7.82 mm (.308")
Bullet weight	165.0 gr · 10.69 g
Ballistic coefficient G1	0.397
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	824.0 m/s · 2703 fps
Muzzle energy	3630 J · 2677 ft·lb
Sectional density	0.249
Form factor	i1 0.626
Category	Hunting
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 3630 J (2677 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.249 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 488 loads of this bore diameter in the database, this one's G1 BC of 0.397 is higher than 309 of them.

Similar 7.82 mm (.308") loads

Barnes TSX, 308 Win, 165 Grain, Barnes Triple-Shock X Bullet (TSX), 2650 fps165 gr · BC 0.398 · 808 m/s Fusion Rifle, 308 Win, 165 Grain, Fusion Soft Point, 2700 fps165 gr · BC 0.446 · 823 m/s Swift Scirocco II, 308 Win, 165 Grain, Swift Scirocco, 2700 fps165 gr · BC 0.470 · 823 m/s Trophy Bonded Tip, 308 Win, 165 Grain, Trophy Bonded Tip, 2700 fps165 gr · BC 0.450 · 823 m/s Trophy Copper, 308 Win, 165 Grain, Trophy Copper, 2700 fps165 gr · BC 0.503 · 823 m/s GECO EXPRESS .308 Win. 10,7g165 gr · BC 0.404 · 825 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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