SAKO · Hunting

SAKO Controlled Expansion Series 7,62 x 53 R 11.7 g / 181 gr

0.221BC (G1)

181.0gr11.73 g

765m/s2510 fps

3432J2531 ft·lb

Manufacturer	SAKO
Calibre	7.85 mm (.309")
Bullet weight	181.0 gr · 11.73 g
Ballistic coefficient G1	0.221
Ballistic coefficient G7	not published
Drag model used	G1
Muzzle velocity	765.0 m/s · 2510 fps
Muzzle energy	3432 J · 2531 ft·lb
Sectional density	0.271
Form factor	i1 1.225
Category	Hunting
Source	SAKO 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 3432 J (2531 ft·lb) is computed from the bullet weight and muzzle velocity above, not quoted from the catalogue. Sectional density 0.271 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 8 loads of this bore diameter in the database, this one's G1 BC of 0.221 is higher than 1 of them.

Similar 7.85 mm (.309") loads

7,62 × 54 R FMJ 180 gr (Rifle ammunition FMJ)180 gr · BC 0.255 · 786 m/s 7,62 × 54 R FMJ 180 gr (Tactical Rifle Ammunition (FMJ))180 gr · BC 0.255 · 786 m/s 7,62 × 54 R SP 180 gr (Rifle ammunition SP)180 gr · BC 0.153 · 800 m/s 7,62 × 54 R HPBT 174 gr (Rifle ammunition Target (Match))174 gr · BC 0.240 · 788 m/s SAKO Monolithic Series 7,62 x 53 R 10.5 g / 162 gr162 gr · BC 0.416 · 780 m/s SAKO Controlled Expansion Series 7,62 x 53 R 13 g / 201 gr201 gr · BC 0.324 · 720 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.

Get it on Google Play