Rifle · CIP

9.3x66mm Sako

9.3x66 Sako.366 Sako9.3x66

Finnish proprietary cartridge designed by Sako for dangerous and large game in a short-action receiver; delivers full 9.3mm bore performance at reduced overall length..

Caliber
0.3661″ · 9.3 mm
Introduced
2003
Case
Rimless
Status
Active
Velocity2,440–2,550 fps
Energy3,780–4,129 ft·lb · est.
Identity
Introduced
2003
Type
Rifle
Origin
Finland
Inventor
Sako
Standard
CIP
Status
Active
Availability
Uncommon
Build
Primer
Boxer Large Rifle
Case type
Rimless
Pressure & range
Max pressure
60,192 psi
Eff. range
300 yd

Ballistics

Representative trajectory · 100 yd zero0–800 yd
100 yd · zero0″−150″150″ drop @ 800 yd0400800Open in Ballistic Compare ↗
Parent case

Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).

Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

CIP TDCC · verified
Measuremmin
Bullet ⌀9.300.366
Neck ⌀9.920.391
Shoulder ⌀11.430.450
Shoulder angle17.5°
Base ⌀12.130.478
Rim ⌀11.950.470
Belt ⌀n/a
Rim thickness1.300.051
Neck length7.800.307
Case length66.002.598
Overall length85.003.346

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. 9.3x66mm Sako is highlighted below.

Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Connected reference

History

Sako developed the 9.3x66mm in 2003 to provide hunters with 9.3mm performance in the shorter Sako 85 action. It delivers ballistics comparable to the 9.3x62mm Mauser from a shorter, lighter rifle. CIP-standardized and chambered exclusively in Sako rifles, it has found a following among Finnish and Scandinavian hunters who pursue moose and bear.

FAQs

What bullet diameter is 9.3x66mm Sako?
9.3x66mm Sako uses a 0.3661″ (9.3 mm) diameter bullet.
Is 9.3x66mm Sako still in production?
9.3x66mm Sako is active; typical availability is uncommon.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →