6 x 52 R BB2 Load Data & Reloading Guide
Also known as: 6x52R BB2, 6×52mm R BB2, 6mm BB2
About 6 x 52 R BB2
The 6 x 52 R BB2 caliber is a specialized cartridge with a unique history rooted in European hunting traditions. Originally developed in Austria in the early 20th century, this cartridge was designed for combination guns often used in hunting. While not as widely recognized as other calibers, it carved a niche for hunters seeking versatility in a rimmed cartridge suitable for both rifle and shotgun barrels. Its legacy persists in bespoke firearms used primarily by enthusiasts and collectors who appreciate traditional hunting cartridges.
This round features a rimmed case design, facilitating its use in break-action rifles and drillings. The 6mm bullet diameter is optimal for medium game hunting, particularly in European settings where its precision and adaptability have kept it relevant. Typical factory loadings include bullet weights ranging from 75 to 100 grains, with reloaders often opting for similar weights to maximize the caliber's ballistic potential. The cartridge balances a modest case capacity with sufficient velocity and energy, making it an exemplary choice for reloaded ammunition.
Ballistically, the 6 x 52 R BB2 offers moderate performance with velocities around 2600 to 2800 feet per second depending on bullet weight and powder charge. It is well-suited for ranges within 200 yards, offering flat shooting capabilities and consistent accuracy. For reloaders, the option to fine-tune loads with various bullet types like soft points or ballistic tips can enhance its effectiveness on different game species.
For enthusiasts of ammunition reloading, the 6 x 52 R BB2 presents several advantages, including the ability to tailor loads to specific hunting or target shooting needs. Its rimmed design increases reliability in specific firearm platforms, while the moderate pressure levels provide a forgiving environment for experimentation and load development. In summary, the 6 x 52 R BB2 remains a viable, if specialized, option for reloaders seeking a blend of tradition and performance in their hunting and shooting activities.
Technical Drawing

Technical Specifications
Start Calculating to Develop your own Load Data for 6 x 52 R BB2
Use our professional ballistics calculator to develop safe and accurate load recipes for 6 x 52 R BB2.
Start CalculatingStandard Load Data — 6 x 52 R BB2
Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.
.243 | 90gr | Nosler AccuBond
.243 | 90gr | Swift Scirocco
.243 | 95gr | ShellHouse Castings SP Hard Cast
.243 | 88gr | CutEdge MTH
.243 | 87gr | Hornady V-MAX
.243 | 105gr | Hornady A-MAX
.243 | 100gr | Sellier & Bellot SP
.243 | 65gr | Berger ND
.243 | 77gr | CutEdge MTH
.243 | 70gr | Osprey Virtus
.243 | 77gr | Ferrobull Tripple Expand Jagd
.243 | 80gr | Fox Classic Hunter
.243 | 70gr | Rhino Penetrator
.243 | 77gr | Hasler ARIETE
.243 | 85gr | Lehigh Defense Controlled Chaos
.243 | 88gr | Warner Tool Co. Flat Line
.243 | 75gr | Rhino Solid Shank
.243 | 102gr | Peregrine Glider GRM
.243 | 80gr | Frontier BTSP
.244 | 77gr | Lapua Scenar-L
.243 | 80gr | Winchester Pointed Soft Point
.243 | 96gr | Brenneke TOG
.243 | 70gr | Hornady SP SX
.243 | 90gr | Speer FMJ
Frequently Asked Questions
The maximum pressure for 6 x 52 R BB2 is 47,863 psi | 3,300 bar.
6 x 52 R BB2 typically uses a Large Rifle (LR) primer.
The case capacity of 6 x 52 R BB2 is approximately 40 grains of water (H₂O).