Rifle · Not SAAMI standardized · Not standardizedObsolete
.300 ICL Grizzly
.300 ICL Grizzly is a belted bottlenecked rifle cartridge of United States origin.
- Caliber
- 0.308″ · 7.823 mm
- Introduced
- 1960
- Case
- Belted
- Parent
- .300 H&H Magnum
- Primary use
- Hunting
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1960
- Type
- Rifle
- Origin
- United States
- Inventor
- Vern S. Juenke
- Manufacturer
- Saturn Rifle
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Discontinued
- Availability
- Rare
- Case capacity
- 75.6 gr H₂O
- Twist (typical)
- 1:10
- Primer
- Large Rifle Magnum
- Case type
- Belted
- Max pressure
- 58,000 psi, SAAMI transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 24.5–28.8 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .300 ICL Grizzly, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.
Open in Ballistic Compare- Parent case
- .300 H&H Magnum
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.
Wikipedia · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.82 | 0.308 | · |
| Neck ⌀ | 8.64 | 0.340 | · |
| Shoulder ⌀ | 11.68 | 0.460 | · |
| Shoulder angle | 14.3° | — | |
| Base ⌀ | 13.51 | 0.532 | · |
| Rim ⌀ | 13.51 | 0.532 | · |
| Belt ⌀ | 14.01 | 0.552 | |
| Rim thickness | 1.27 | 0.050 | · |
| Neck length | 8.08 | 0.318 | |
| Case length | 66.29 | 2.610 | · |
| Overall length | 89.92 | 3.540 | · |
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. .300 ICL Grizzly is highlighted below.
Missing a dimension for .300 ICL Grizzly? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
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
History
Introduced around 1960 by Vern S. Juenke, derived from the .300 H&H Magnum.
FAQs
- What twist rate does .300 ICL Grizzly use?
- .300 ICL Grizzly typically uses a 1:10 twist rate.
- What bullet diameter is .300 ICL Grizzly?
- .300 ICL Grizzly uses a 0.308″ (7.823 mm) diameter bullet.
- Is .300 ICL Grizzly still in production?
- .300 ICL Grizzly is discontinued; typical availability is rare.
- What is .300 ICL Grizzly used for?
- .300 ICL Grizzly is primarily used for hunting.
- What is .300 ICL Grizzly based on?
- .300 ICL Grizzly is derived from the .300 H&H Magnum case.
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 →
