8.5 x 55 Blaser Load Data & Reloading Guide
Also known as: 8.5x55 Blaser, 8.5×55mm Blaser, .338 Blaser
About 8.5 x 55 Blaser
The 8.5 x 55 Blaser caliber was developed by Blaser Jagdwaffen GmbH in Germany, emerging from a commitment to creating superior hunting cartridges. Introduced in the early 2000s, the cartridge was intended to offer an effective medium-range hunting round with excellent performance for European game species. This design was a collaborative effort to expand upon the capabilities of traditional calibers while delivering a modern solution for hunting rifles, primarily to be used in Blaser’s R8 and R93 bolt-action rifles.
Technically, the 8.5 x 55 Blaser features a rebated rim and a relatively short, thick-walled case, allowing it to withstand high pressures effectively. This provides a robust casing suitable for reaching desirable velocity levels without undue wear on barrels. The cartridge typically employs a bullet diameter of approximately 8.5 mm or 0.338 inches, facilitating a high sectional density and energy transfer. Overall length is optimized for repeating actions, providing smooth feed and function in magazines designed for this caliber.
Ballistic performance of the 8.5 x 55 Blaser is notably effective for a wide range of applications. Bullet weights commonly range from 180 to 250 grains, balancing speed and energy. This caliber typically yields muzzle velocities of 2,600 to over 2,800 feet per second, depending on bullet weight and powder choice. Such characteristics make it particularly suited to medium to large game hunting, allowing humane takedown at medium ranges with appropriate shot placement. Moreover, its manageable recoil enhances shooter accuracy and follow-up shot speed.
For reloaders, the 8.5 x 55 Blaser presents several advantages, including the opportunity to tailor loads to specific hunting needs or rifle characteristics. The cartridge benefits from a broad selection of bullet styles and weights, allowing customization that can maximize performance for specific game or terrain types. Furthermore, its precision engineering supports consistent reloading practices, which can extend barrel life and deliver consistent shot placement. This versatility and adaptability make the 8.5 x 55 Blaser a compelling choice for enthusiasts seeking to optimize their reloading endeavors.
Technical Drawing
Based on C.I.P., the max. allowed case length is 2.154 in / 54.70 mm, the max. cartridge length is 2.986 in / 75.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Technical Specifications
Start Calculating to Develop your own Load Data for 8.5 x 55 Blaser
Use our professional ballistics calculator to develop safe and accurate load recipes for 8.5 x 55 Blaser.
Start CalculatingBrass Case Capacities
The following table shows the case capacity (Grains of Water) for brass in cartridge 8.5 x 55 Blaser where we have data (number of datapoints in brackets).
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Standard Load Data — 8.5 x 55 Blaser
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.
.338 | 160gr | Barnes TTSX BT
.338 | 200gr | Nosler AccuBond
.338 | 130gr | Sax MJG-SX
.338 | 185gr | Barnes TTSX BT
.338 | 185gr | Hornady CX
.338 | 225gr | Nosler AccuBond
.338 | 185gr | Fox Classic Hunter
.338 | 180gr | Nosler AccuBond
.338 | 185gr | Hornady ECX
.338 | 138gr | Sax KJG-SR
.338 | 200gr | Hornady SST InterLock
.338 | 225gr | Hornady SST InterLock
.338 | 210gr | Barnes TTSX BT
.338 | 250gr | Sierra GameKing
.338 | 230gr | Hornady ELD-X
.338 | 231gr | Lapua Naturalis
.338 | 225gr | Woodleigh PP SN
.338 | 250gr | Nosler AccuBond
.338 | 250gr | Sako Hammerhead
.338 | 225gr | NorthFork Bonded Core
.338 | 210gr | Nosler Partition
.338 | 210gr | Impala RNFP KO
.338 | 215gr | Sierra GameKing
.338 | 210gr | Fox Classic Hunter
Community Loads — 8.5 x 55 Blaser
Here are some popular loads for 8.5 x 55 Blaser:
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| Bullet | Powder | Barrel (in) | Charge (gr) | Case Volume (GoW) | OAL (in) | Max. Pressure (psi) | Muzzle Velocity (fps) | |
|---|---|---|---|---|---|---|---|---|
M.338 | 130gr | Sax MJG-SX (130gr) | Reload RS 40 | 20.0 | ••.• | 77.0 | 2.95 | 59,257 (95%) | 3245 | |
M.338 | 130gr | Sax MJG-SX (130gr) | Reload RS 40 | 20.0 | ••.• | 77.0 | 2.98 | 58,099 (93%) | 3232 | |
M.338 | 130gr | Sax MJG-SX (130gr) | Reload RS 40 | 20.5 | ••.• | 77.0 | 2.98 | 57,674 (92%) | 3205 | |
.338 | 130gr | Sax MJG-SX (130gr) | Norma 202 | 20.0 | ••.• | 77.0 | 2.98 | 51,897 (83%) | 3150 | |
M.338 | 130gr | Sax MJG-SX (130gr) | Vihtav N130 | 20.5 | 57.0 | 77.0 | 2.98 | 59,995 (96%) | 3169 | |
.338 | 130gr | Sax MJG-SX (130gr) | Reload RS 40 | 20.5 | 58.0 | 77.0 | 2.98 | 45,113 (72%) | 3012 | |
.338 | 130gr | Sax MJG-SX (130gr) | Vihtav N540 | 20.1 | 58.1 | 78.0 | 2.91 | 33,243 (53%) | 2726 | |
.338 | 138gr | Sax KJG-SR (138gr) | Reload RS 52 | 20.1 | ••.• | 77.0 | 2.98 | 54,911 (88%) | 3228 | |
.338 | 138gr | Sax KJG-SR (138gr) | Reload RS 52 | 20.1 | ••.• | 77.0 | 2.98 | 50,908 (82%) | 3153 | |
M.338 | 160gr | Barnes TTSX (160gr) | Reload RS 40 | 20.1 | ••.• | 76.0 | 2.97 | 61,598 (99%) | 3012 | |
M.338 | 160gr | Barnes TTSX (160gr) | Reload RS 40 | 20.1 | ••.• | 76.0 | 2.97 | 56,956 (91%) | 2943 | |
M.338 | 160gr | Barnes TTSX (160gr) | Vihtav N130 | 20.1 | ••.• | 76.0 | 3.03 | 58,160 (93%) | 2894 | |
.338 | 160gr | Barnes TTSX (160gr) | Vihtav N540 | 18.5 | ••.• | 77.0 | 2.98 | 50,676 (81%) | 2799 | |
.338 | 160gr | Barnes TTSX (160gr) | Vihtav N540 | 18.5 | ••.• | 77.0 | 2.98 | 39,189 (63%) | 2585 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 52 | 22.0 | ••.• | 78.5 | 2.98 | 58,125 (93%) | 3182 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 80.2 | 2.94 | 61,747 (99%) | 3045 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 80.2 | 2.94 | 60,411 (97%) | 3025 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 80.2 | 2.98 | 61,618 (99%) | 3022 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 80.2 | 2.96 | 59,477 (95%) | 3015 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 77.0 | 2.97 | 60,856 (98%) | 3012 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 80.2 | 2.94 | 59,519 (95%) | 3012 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 80.2 | 2.96 | 58,558 (94%) | 3002 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 77.0 | 2.97 | 59,528 (95%) | 2995 | |
M.338 | 160gr | Barnes TTSX BT (160gr) | Reload RS 40 | 19.7 | ••.• | 77.0 | 2.97 | 58,259 (93%) | 2979 |
Frequently Asked Questions
The maximum pressure for 8.5 x 55 Blaser is 62,366 psi | 4,300 bar.
8.5 x 55 Blaser typically uses a Large Rifle (LR) primer.
The case capacity of 8.5 x 55 Blaser is approximately 77 grains of water (H₂O).