7.62x39 Ammo

What is 7.62x39?

If you own an AK, this is your round. 7.62×39mm was developed in 1943–1944 by Soviet designers Nickolay Elizarov and Boris Semin — a direct response to the German StG 44 and its 7.92×33mm Kurz intermediate cartridge. The Soviets wanted something between pistol-caliber SMG ammo and the full-power 7.62×54R. The M43 was the answer.

Mikhail Kalashnikov won the Soviet Army’s 1947 competition for a rifle chambered in M43. The AK-47 was adopted in 1949. That distinctive case taper — 0.447” at the base, 0.396” at the shoulder — is the reason AK magazines curve. It’s not a quirk; it’s what lets the cartridge extract reliably from a dirty steel case in mud, sand, or arctic cold.

Over 100 million AK-pattern rifles have been built. 7.62×39 has been the standard infantry round for Soviet allies since the 1950s — China’s Type 56, Yugoslavia’s M70, East Germany’s MPiKM, and dozens of others. In the U.S. it’s the cartridge in the WASR-10, Zastava ZPAP M70, PSA GF3, and every other AK on the market.

Technical specifications

Bullet diameter: 7.85–7.92mm (.308–.311”) — slightly larger than the .308” diameter used in .308 Win
Case length: 38.70mm (1.524”)
Overall cartridge length: 56.00mm (2.205”)
SAAMI max pressure: 45,010 PSI
CIP max pressure: 51,490 PSI (European/Balkan loads run hotter)

Standard ballistics from a 16-inch AKM-pattern barrel:

Ballistic coefficient (G7): approximately 0.138 for the standard M43 FMJ boattail bullet — low by modern standards. This explains the significant wind drift and energy drop past 200 yards. Wind drift at 300 yards in a 10 mph crosswind is approximately 9.4 inches.

Effective range: what the numbers say

The 7.62×39 was Soviet doctrine-designed for 100–300 meter engagements. That’s still where it works best:

300 yards is the practical maximum for any serious purpose. The cartridge goes transonic (loses aerodynamic stability) at roughly 400–450 yards, which is where grouping becomes unpredictable. At 300 yards with iron sights on a standard AK, you’re working hard but achievable.

150–175 yards is the ethical deer hunting limit. Energy drops below the commonly cited 900 ft-lb threshold for reliable deer kills approaching 200+ yards. At 150 yards with quality soft-point or polymer-tipped ammo, the cartridge is legitimate. Beyond that, shot placement increasingly determines outcome rather than cartridge performance.

The .30-30 comparison: The 7.62×39 is frequently and accurately compared to .30-30 Winchester — similar energy envelope, similar effective range on medium game, similar limitations. The 7.62×39 has a slight edge due to the more aerodynamic boattail bullet, but both are 200-yard deer cartridges.

Steel case vs brass case: what the data shows

The AK platform was designed for steel-cased ammunition from day one. The chrome-lined bore, robust extractor, loose tolerances, and strong hammer spring are all features designed around steel-case Soviet military ammo. This is categorically different from running steel case in an AR-15, where it’s a compromise.

Lucky Gunner’s 10,000-round torture test (AR-15 platform, 5.56) found steel-case barrels wore out at ~6,000 rounds vs. 10,000+ for brass. In an AK, the platform-specific design means the reliability gap largely disappears — but barrel wear from bimetal-jacketed bullets is still higher than from copper-jacketed brass ammo.

Accuracy data from Recoil Magazine’s 23-load bolt-gun test (CZ 527, 100 meters):

• Federal Power-Shok 123gr SP (brass): 0.87 MOA best group
• Hornady Black 123gr SST (brass): ~1.35 MOA average
• Barnaul Brown Bear (steel): 1.27–1.68 MOA
• Tula 122gr FMJ (steel): 1.97–2.08 MOA
• Wolf HP/SP (steel): ~4 MOA

In an iron-sighted AK, the difference between 2 MOA and 4 MOA is irrelevant at combat ranges. In a scoped setup for hunting, it matters — use brass or quality steel like Barnaul.

Range restrictions: Some indoor ranges prohibit bimetal-jacketed ammo due to ricochet concerns with steel targets. Use a magnet: if it sticks to the bullet, it’s bimetal/steel-jacketed. PPU, Igman, PMC, Federal, and Hornady all use copper jackets — no range restriction concerns.

FMJ over-penetration: the real problem for home defense

This is the most important thing 7.62×39 AK owners need to know about home defense use. Standard 123gr FMJ penetrates 31+ inches in ballistic gel — more than double the FBI’s 18-inch maximum recommendation. It punches through a standard torso and keeps going through walls.

Gel test data from Firearms News (1969 Polish AKM, 10% ballistic gel):

• American Eagle 124gr FMJ: 31.25” penetration, minimal expansion
• Hornady Black 123gr SST: 21.75” penetration, 0.70” expansion (89% weight retention) ✓
• Wolf 125gr SP: 18” penetration, 0.64” expansion (91.4% weight retention) ✓
• Barnaul 125gr SP: 17.5” penetration, 0.62” expansion (91% weight retention) ✓
• Wolf 124gr HP (steel jacket): 18” penetration, 0.46” expansion — inconsistent ✗

The Hornady SST’s polymer tip is the reason it expands reliably while steel-jacketed hollow points don’t. The polymer mechanically drives into the lead core on impact, forcing expansion regardless of jacket material. It’s the only commonly available 7.62×39 load that consistently approaches FBI performance standards.

Bottom line: If you run an AK for home defense, the Hornady Black SST is the load. FMJ is categorically wrong for this application. The AK is better suited to rural home defense where over-penetration risk to neighbors is lower.

Bullet type guide

FMJ (Full Metal Jacket): Military standard. Does NOT expand. Creates a narrow, uniform wound channel. Penetrates 31+ inches in gel. Use for training, range work, and high-volume practice. Illegal for hunting in most states.

Soft Point (SP): Exposed lead tip that deforms on impact and initiates expansion. The most reliable expanding option for hunting. Wolf SP and Barnaul SP in gel testing: 0.62–0.64 inch expansion at 17.5–18 inch depth. Best for deer hunting and general-purpose use where expansion matters.

Hollow Point (HP) — steel jacket: Steel-jacketed HP often fails to expand reliably at 7.62×39 velocities. The hard steel jacket doesn’t deform the way copper does. Wolf HP achieved only 0.46-inch expansion in gel testing — barely larger than the original bullet diameter. The polymer-tip SST design solves this.

Hornady SST (polymer-tipped): The exception that works. Consistent 0.70-inch expansion at 21.75-inch depth. Best terminal performance in the caliber for hunting and defensive use.

154gr Soft Point: Heavier, slower option (2,103 fps, 1,516 ft-lbs muzzle). Higher sectional density improves penetration at close range. Lower BC degrades performance past 150 yards. Niche use for close-range large game.

The import ban: why 7.62x39 prices changed

Timeline:

• August 2021: Biden administration imposed sanctions blocking Russian gun and ammunition imports (Chemical and Biological Weapons Control Act, related to Novichok poisoning)
• August 2022: Ukraine invasion further cut supplies
• 2023–2025: Russian import ban continues; pre-ban stock sells through at premium

Price impact: Steel-case 7.62×39 spiked 60–80% from late 2021 through 2022. Pre-ban pricing was $0.20–0.30/round for Wolf/Tula in bulk. Post-ban normalized to $0.40–0.55/round. The gap between 7.62×39 steel case and comparable 5.56 brass largely closed during the panic — one of the factors behind declining AK platform sales.

Current supply landscape (2025–2026): Pre-ban Russian stock continues selling through distributor inventories at slight premiums. Balkan manufacturers — PPU (Serbia), Igman (Bosnia), Belom (Serbia) — have filled most of the quality gap. Korean (PMC) and domestic (Hornady, Federal, Winchester) production covers premium demand. All-time low in early 2025: ~$0.45/round for steel case.

Brand guide

Hornady Black 123gr SST — Best expanding performance in the caliber. Polymer-tipped, sub-MOA capable in quality rifles. 96% positive community sentiment. ~$1.50–1.75/rd.

Federal Power-Shok 123gr SP — Highest documented accuracy (0.87 MOA in multi-load bolt-gun test). 98% positive reviews. Best choice for hunting. ~$1.20–1.50/rd.

PPU / Prvi Partizan 123gr FMJ — Serbian brass-cased, Boxer-primed, reloadable. “Benchmark for reliable brass-cased ammunition.” 92% positive sentiment. Works in any platform without primer hardness concerns. ~$0.65–0.75/rd.

Igman 123gr FMJ — Bosnian brass-cased, one of the highest muzzle energies tested. Very consistent. ~$0.55–0.70/rd.

PMC Bronze 123gr FMJ — Korean manufacture, excellent QC. No primer issues in any platform. ~$0.65–0.75/rd.

Barnaul 123gr FMJ (Brown Bear) — Best accuracy of the Russian steel-case options. 1.27–1.68 MOA in bolt-gun testing. ~$0.50–0.60/rd.

Wolf Military Classic — Pre-ban stock. The historical training standard for AK owners. 3–4 MOA accuracy (adequate for AK iron sights). ~$0.45–0.59/rd when available.

TulAmmo — Cheapest available, most inconsistent QC. Fine for bolt guns and revolvers where reliability is less critical. Not recommended for semi-auto precision use.

Brands to avoid: Norma 7.62×39 (recall history, blown primers), MaxxTech (significantly below advertised velocity), Winchester USA White Box (inconsistent seating depth, failures to fire), Sterling (60% positive reviews, extreme lot variance).

Price guide (2025–2026)

7.62×39 in the AR-15: why it’s hard

Running 7.62×39 in an AR-15 is a documented engineering challenge. The tapered case was never designed for the AR’s straight magazine well. Known issues:

• Feeding: The taper causes nose-dive failures with most standard AR mags. C-Products DURAMAG is the only magazine with widely documented reliability.
• Firing pin: Standard AR firing pins don’t strike hard enough for Russian Berdan primers. Extended firing pins required.
• Extraction: AR extractor wear accelerates on harder steel cases.
• Buffer weight: Heavier buffer needed for reliable cycling.

For anyone wanting a semi-auto 7.62×39, an AK-pattern rifle (WASR-10, Zastava ZPAP M70, PSA GF3) is more reliable and typically less expensive. The AR-15 in 7.62×39 requires more investment and troubleshooting than just buying the correct platform.

Rifles chambered in 7.62×39

Semi-automatic:

• WASR-10 (Century Arms AK import) — the most common budget AK
• Zastava ZPAP M70 — the current best-value AK in production
• PSA GF3 Forged AK-47 — US-made, budget-friendly
• Arsenal SLR-107 — premium Bulgarian AK
• Ruger Mini Thirty

Bolt-action:

• CZ 527 Carbine — sub-MOA capable with quality ammo, the reference platform for accuracy testing
• Ruger American Ranch

SKS:

• Norinco Type 56 (Chinese)
• Yugoslav M59/66
• Russian Tula, Izhevsk (rare US surplus)