8.5 x 55 Blaser Load Data & Reloading Guide

Rifle

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

8.5 x 55 Blaser cartridge dimensions, C.I.P.L1 = 42.38 mm, L2 = 45.68 mm, L3 = 54.7 mm, L6 = 75.84 mmL1 = 42.38 mmL2 = 45.68 mmL3 = 54.70 mmL6 = 75.84 mm60.0°

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

Maximum Pressure:62366 PSI / 4300 bar
Case Volume:77 Grains of Water
Primer Size:Large Rifle (LR)
Safety Standard:C.I.P. (Datasheet)
Bore Area:56.95 mm²
Barrel Diameter:0.338" / 8.6 mm
L1:1.669" / 42.38 mm
L2:1.798" / 45.68 mm
L3:2.154" / 54.70 mm
L6:2.986" / 75.84 mm

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.

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Brass 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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Hornady (5)76.9
Lapua (1)75.8
Norma (16)••.•
Sax (1)••.•

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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.

All
130 gr
138 gr
160 gr
180 gr
185 gr
200 gr
210 gr
215 gr
225 gr
230 gr
231 gr
250 gr

Community Loads — 8.5 x 55 Blaser

Here are some popular loads for 8.5 x 55 Blaser:

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Filter:
BulletPowderBarrel (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••.•77.02.9559,257 (95%)3245
M.338 | 130gr | Sax MJG-SX (130gr)
Reload
RS 40
20.0••.•77.02.9858,099 (93%)3232
M.338 | 130gr | Sax MJG-SX (130gr)
Reload
RS 40
20.5••.•77.02.9857,674 (92%)3205
.338 | 130gr | Sax MJG-SX (130gr)
20.0••.•77.02.9851,897 (83%)3150
M.338 | 130gr | Sax MJG-SX (130gr)
Vihtav
N130
20.557.077.02.9859,995 (96%)3169
.338 | 130gr | Sax MJG-SX (130gr)
Reload
RS 40
20.558.077.02.9845,113 (72%)3012
.338 | 130gr | Sax MJG-SX (130gr)
Vihtav
N540
20.158.178.02.9133,243 (53%)2726
.338 | 138gr | Sax KJG-SR (138gr)
Reload
RS 52
20.1••.•77.02.9854,911 (88%)3228
.338 | 138gr | Sax KJG-SR (138gr)
Reload
RS 52
20.1••.•77.02.9850,908 (82%)3153
M.338 | 160gr | Barnes TTSX (160gr)
Reload
RS 40
20.1••.•76.02.9761,598 (99%)3012
M.338 | 160gr | Barnes TTSX (160gr)
Reload
RS 40
20.1••.•76.02.9756,956 (91%)2943
M.338 | 160gr | Barnes TTSX (160gr)
Vihtav
N130
20.1••.•76.03.0358,160 (93%)2894
.338 | 160gr | Barnes TTSX (160gr)
Vihtav
N540
18.5••.•77.02.9850,676 (81%)2799
.338 | 160gr | Barnes TTSX (160gr)
Vihtav
N540
18.5••.•77.02.9839,189 (63%)2585
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 52
22.0••.•78.52.9858,125 (93%)3182
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•80.22.9461,747 (99%)3045
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•80.22.9460,411 (97%)3025
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•80.22.9861,618 (99%)3022
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•80.22.9659,477 (95%)3015
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•77.02.9760,856 (98%)3012
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•80.22.9459,519 (95%)3012
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•80.22.9658,558 (94%)3002
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•77.02.9759,528 (95%)2995
M.338 | 160gr | Barnes TTSX BT (160gr)
Reload
RS 40
19.7••.•77.02.9758,259 (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).