Load Specifications
Bullet:.338 | 185gr | Barnes TSX BT
Bullet Manufacturer:Barnes
Bullet Weight:185 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Blaser Mag. load data
Case Length (l3):2.5078"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:92.6 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:13.0
Load data in caliber .338 Blaser Mag. with .338 | 185gr | Barnes TSX BT bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 51,851 psi | 85% | 2854 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,548 psi | 88% | 2930 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,127 psi | 87% | 2920 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,925 psi | 89% | 2979 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,925 psi | 89% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 54,607 psi | 90% | 2923 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 53,185 psi | 87% | 2966 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,026 psi | 87% | 3045 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 54,607 psi | 90% | 3009 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 52,373 psi | 86% | 2953 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,563 psi | 88% | 2956 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,114 psi | 89% | 2933 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,259 psi | 89% | 3127 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 51,953 psi | 85% | 2976 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,013 psi | 90% | 2910 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,533 psi | 86% | 2995 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,372 psi | 84% | 3051 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,649 psi | 86% | 3097 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,361 psi | 60% | 2762 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,509 psi | 67% | 2917 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,476 psi | 89% | 3022 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 52,185 psi | 86% | 2986 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,707 psi | 87% | 2949 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,141 psi | 86% | 2890 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,678 psi | 86% | 2986 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,795 psi | 90% | 3087 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 53,490 psi | 88% | 2943 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,534 psi | 88% | 2999 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 96% | 54,549 psi | 90% | 3071 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 88% | 55,114 psi | 90% | 3018 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,471 psi | 78% | 2920 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,462 psi | 89% | 3051 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,824 psi | 88% | 3081 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,983 psi | 57% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 52,025 psi | 85% | 2953 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 53,084 psi | 87% | 2976 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,230 psi | 89% | 2976 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,838 psi | 88% | 2943 fps | 97.1% |
| IMR 4198 | <<locked>> | 82% | 55,114 psi | 90% | 2867 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,924 psi | 87% | 2976 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,868 psi | 90% | 2986 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,599 psi | 73% | 2881 fps | 98.1% |
| IMR 4895 | <<locked>> | 90% | 53,867 psi | 88% | 3028 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 53,563 psi | 88% | 2956 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,650 psi | 88% | 2940 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,925 psi | 89% | 2979 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,491 psi | 89% | 2936 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,578 psi | 90% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,867 psi | 88% | 2979 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,665 psi | 90% | 3012 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 53,098 psi | 87% | 2949 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,737 psi | 88% | 2956 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,071 psi | 90% | 3035 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,431 psi | 86% | 3035 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 52,228 psi | 86% | 3009 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,416 psi | 84% | 3028 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 54,114 psi | 89% | 2976 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,403 psi | 88% | 2992 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,578 psi | 90% | 2959 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 58% | 1873 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,098 psi | 87% | 2940 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,099 psi | 89% | 2982 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,823 psi | 87% | 3064 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,446 psi | 86% | 3097 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,968 psi | 87% | 3071 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,156 psi | 87% | 3097 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 53,983 psi | 89% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,461 psi | 88% | 2946 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 52,040 psi | 85% | 2976 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 52,707 psi | 87% | 2949 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,867 psi | 88% | 2979 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,925 psi | 89% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,578 psi | 90% | 2982 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,665 psi | 90% | 3012 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,070 psi | 89% | 3041 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,141 psi | 86% | 2946 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,098 psi | 87% | 2976 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,969 psi | 90% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 51,750 psi | 85% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,505 psi | 89% | 2930 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 54,868 psi | 90% | 2992 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,157 psi | 89% | 2887 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,779 psi | 85% | 2940 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 52,562 psi | 86% | 2976 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,731 psi | 77% | 2979 fps | 100% |
| Unknown powder | <<locked>> | 98% | 53,693 psi | 88% | 3045 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 84% | 54,665 psi | 90% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 51,967 psi | 85% | 2831 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,258 psi | 87% | 2917 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,418 psi | 89% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,172 psi | 89% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 51,619 psi | 85% | 2979 fps | 99% |
| Vihtavuori N530 | <<locked>> | 86% | 54,230 psi | 89% | 2959 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 52,504 psi | 86% | 2927 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,143 psi | 89% | 3041 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,175 psi | 64% | 2838 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,272 psi | 86% | 2963 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 54,563 psi | 90% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,549 psi | 90% | 3071 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,329 psi | 53% | 2733 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,085 psi | 89% | 3005 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 45,701 psi | 75% | 2759 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,980 psi | 82% | 2874 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,811 psi | 62% | 2667 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,671 psi | 72% | 2815 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,671 psi | 72% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 51,068 psi | 84% | 2864 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 35,795 psi | 59% | 2654 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,577 psi | 57% | 2684 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 42,192 psi | 69% | 2785 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,882 psi | 59% | 2625 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,324 psi | 73% | 2799 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 44,193 psi | 73% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | 65.1 gr | 80% | 38,276 psi | 63% | 2802 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,215 psi | 58% | 2644 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,590 psi | 85% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,942 psi | 62% | 2710 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,215 psi | 58% | 2700 fps | 95.2% |
| Alliant Reloder-17 | 64.1 gr | 80% | 30,356 psi | 50% | 2595 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,024 psi | 53% | 2644 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,608 psi | 62% | 2844 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,321 psi | 68% | 2782 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 34,476 psi | 57% | 2641 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 49,443 psi | 81% | 2894 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,050 psi | 76% | 2789 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,946 psi | 71% | 2815 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,442 psi | 78% | 2966 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 47,094 psi | 77% | 2841 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,189 psi | 63% | 2707 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 90% | 44,295 psi | 73% | 2887 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 42,583 psi | 70% | 2799 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,124 psi | 49% | 2533 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,187 psi | 59% | 2707 fps | 98% |
| Hodgdon Superformance | <<locked>> | 94% | 46,630 psi | 77% | 2949 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 43% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,884 psi | 62% | 2680 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 38,392 psi | 63% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,041 psi | 58% | 2602 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 88% | 44,889 psi | 74% | 2779 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 52,083 psi | 86% | 2825 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,690 psi | 82% | 2920 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,571 psi | 75% | 2822 fps | 95.1% |
| IMR 4831 | <<locked>> | 92% | 34,432 psi | 57% | 2661 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 38,870 psi | 64% | 2746 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 44,324 psi | 73% | 2799 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,893 psi | 82% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,872 psi | 67% | 2759 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,467 psi | 70% | 2723 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 37,275 psi | 61% | 2664 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 39,305 psi | 65% | 2703 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 45,179 psi | 74% | 2844 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,060 psi | 67% | 2733 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,539 psi | 68% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,289 psi | 61% | 2700 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 35,085 psi | 58% | 2687 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,883 psi | 61% | 2710 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 42,134 psi | 69% | 2851 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,121 psi | 72% | 2792 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,685 psi | 72% | 2818 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,950 psi | 79% | 2848 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,266 psi | 43% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,821 psi | 82% | 2887 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,266 psi | 73% | 2805 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,682 psi | 65% | 2815 fps | 97.4% |
| ReloadSwiss RS 60 | 64.1 gr | 80% | 32,372 psi | 53% | 2671 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,072 psi | 61% | 2762 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,234 psi | 66% | 2838 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 44,860 psi | 74% | 2782 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,117 psi | 64% | 2684 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 32,401 psi | 53% | 2582 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 49,443 psi | 81% | 2894 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,305 psi | 65% | 2703 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,872 psi | 67% | 2759 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,275 psi | 61% | 2664 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 45,179 psi | 74% | 2844 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,692 psi | 55% | 2638 fps | 96% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,250 psi | 69% | 2762 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,770 psi | 67% | 2749 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,656 psi | 70% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,259 psi | 58% | 2549 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,440 psi | 73% | 2759 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,776 psi | 78% | 2877 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,177 psi | 69% | 2694 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,076 psi | 69% | 2766 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,402 psi | 55% | 2592 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 27,427 psi | 45% | 2513 fps | 95.4% |
| Unknown powder | <<locked>> | 88% | 38,522 psi | 63% | 2756 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 48,312 psi | 79% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,989 psi | 71% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,406 psi | 63% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,262 psi | 64% | 2680 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,778 psi | 52% | 2530 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 36,912 psi | 61% | 2694 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 44,222 psi | 73% | 2792 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,797 psi | 62% | 2664 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,129 psi | 59% | 2694 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 34,185 psi | 56% | 2723 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,400 psi | 50% | 2500 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 47,311 psi | 78% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 44,295 psi | 73% | 2887 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,226 psi | 50% | 2657 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,314 psi | 83% | 2943 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 101 powders for .338 Blaser Mag. loaded with the .338 | 185gr | Barnes TSX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,127 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .338 Blaser Mag. with the .338 | 185gr | Barnes TSX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.