Cartridge
8x64mm S
- Caliber
- 0.323″ · 8.2 mm
- Introduced
- 1912
- Case
- Rimless
- Status
- Obsolete
- Introduced
- 1912
- Status
- Obsolete
- Case capacity
- 69.5 gr H₂O
- Case type
- Rimless
- Max pressure
- 58,740 psi
- Eff. range
- 350 yd
Ballistics
- 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| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 8.20 | 0.323 | ✓ |
| Neck ⌀ | 8.96 | 0.353 | ✓ |
| Shoulder ⌀ | 10.85 | 0.427 | ✓ |
| Shoulder angle | 14° | — | ✓ |
| Base ⌀ | 11.95 | 0.470 | ✓ |
| Rim ⌀ | 12.00 | 0.472 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.30 | 0.051 | ✓ |
| Neck length | — | — | ≈ |
| Case length | 64.00 | 2.520 | ✓ |
| Overall length | 87.50 | 3.445 | ✓ |
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. 8x64mm S 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.
Lineage
Connected reference
FAQs
- What bullet diameter is 8x64mm S?
- 8x64mm S uses a 0.323″ (8.2 mm) diameter bullet.
- Is 8x64mm S still in production?
- 8x64mm S is obsolete.
Sources & provenance
- StandardC.I.P. (Commission Internationale Permanente) — C.I.P. TDCC — 8 x 64 S (Tab. I, rimless, p.62) · bullet ⌀archived
- SecondaryWikipedia — 8x64mm S · year, bullet ⌀, velocity, grain weightsarchived
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
Lindcott Armory