Load Specifications
Load data in caliber .338 Blaser Mag. with .338 | 180gr | Impala LW CFN bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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.
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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>> | 82% | 54,186 psi | 89% | 2894 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,099 psi | 89% | 2930 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,099 psi | 89% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,592 psi | 90% | 2940 fps | 96.1% |
| Accurate 4064 | <<locked>> | 88% | 53,867 psi | 88% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 52,069 psi | 85% | 3035 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 84% | 52,678 psi | 86% | 2982 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 90% | 53,272 psi | 87% | 2976 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,636 psi | 90% | 2982 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 52,199 psi | 86% | 2917 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,911 psi | 90% | 3150 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,650 psi | 88% | 3009 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,172 psi | 89% | 3028 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 52,620 psi | 86% | 3084 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,592 psi | 88% | 3123 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,191 psi | 68% | 2874 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,876 psi | 75% | 3041 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 51,793 psi | 85% | 2989 fps | 99% |
| Bofors RP3 | <<locked>> | 90% | 54,708 psi | 90% | 3031 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,447 psi | 89% | 2986 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,156 psi | 87% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,288 psi | 89% | 3018 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,114 psi | 90% | 3035 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 96% | 54,186 psi | 89% | 3077 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 53,127 psi | 87% | 2995 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,388 psi | 86% | 3012 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 52,011 psi | 85% | 3025 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 96% | 54,563 psi | 90% | 3104 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 59% | 1860 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,954 psi | 89% | 2995 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 53,084 psi | 87% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,939 psi | 87% | 2963 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 52,794 psi | 87% | 2930 fps | 96.6% |
| IMR 4350 | <<locked>> | 98% | 54,099 psi | 89% | 3002 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 52,489 psi | 86% | 2956 fps | 96.5% |
| IMR 4831 | <<locked>> | 98% | 52,417 psi | 86% | 3025 fps | 99% |
| IMR 4895 | <<locked>> | 86% | 52,330 psi | 86% | 3009 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 84% | 54,636 psi | 90% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 52,808 psi | 87% | 2966 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,098 psi | 86% | 2907 fps | 99.6% |
| Lovex S062 | <<locked>> | 88% | 53,403 psi | 88% | 2969 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 52,576 psi | 86% | 2963 fps | 97.9% |
| Lovex S070 | <<locked>> | 96% | 53,229 psi | 87% | 2992 fps | 97% |
| Norma 201 | <<locked>> | 84% | 52,156 psi | 86% | 2936 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,185 psi | 86% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 88% | 53,447 psi | 88% | 3018 fps | 99.7% |
| Norma URP | <<locked>> | 98% | 54,143 psi | 89% | 3074 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 88% | 53,330 psi | 88% | 3035 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 98% | 52,765 psi | 87% | 3058 fps | 97.6% |
| Ramshot TAC | <<locked>> | 84% | 54,998 psi | 90% | 2999 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,375 psi | 89% | 3018 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 60% | 1906 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 51,953 psi | 85% | 2953 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,056 psi | 89% | 3094 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,432 psi | 88% | 3127 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,766 psi | 90% | 3107 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,186 psi | 89% | 3127 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 82% | 53,925 psi | 89% | 2930 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,707 psi | 87% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,491 psi | 89% | 3018 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 54,447 psi | 89% | 2986 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 52,576 psi | 86% | 2963 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 52,808 psi | 87% | 2966 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,403 psi | 88% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,229 psi | 87% | 2992 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 51,924 psi | 85% | 3018 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,766 psi | 88% | 2976 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,085 psi | 89% | 3002 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 52,924 psi | 87% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 52,982 psi | 87% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 52,692 psi | 87% | 2907 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 52,750 psi | 87% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 52,881 psi | 87% | 2966 fps | 99.6% |
| Somchem S355 | <<locked>> | 92% | 54,534 psi | 90% | 3015 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,083 psi | 86% | 3077 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 52,968 psi | 87% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,042 psi | 90% | 2946 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 52,301 psi | 86% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 52,460 psi | 86% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 52,968 psi | 87% | 3009 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 51,967 psi | 85% | 2930 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,998 psi | 89% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 52,373 psi | 86% | 3018 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,049 psi | 74% | 2963 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,055 psi | 87% | 2986 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 54,897 psi | 90% | 3031 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,186 psi | 89% | 3077 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,391 psi | 61% | 2881 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,114 psi | 89% | 3015 fps | 99.9% |
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% | 51,111 psi | 84% | 2848 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,324 psi | 74% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,879 psi | 84% | 2927 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,329 psi | 84% | 2887 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 42,786 psi | 70% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,737 psi | 59% | 2703 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 46,920 psi | 77% | 2877 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 40,074 psi | 66% | 2720 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,718 psi | 80% | 2881 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 49,226 psi | 81% | 2874 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,612 psi | 70% | 2907 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,089 psi | 66% | 2753 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,830 psi | 70% | 2815 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 37,318 psi | 61% | 2753 fps | 95.7% |
| Alliant Reloder-17 | 64.4 gr | 80% | 34,882 psi | 57% | 2720 fps | 96.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 32,967 psi | 54% | 2661 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,350 psi | 66% | 2910 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,701 psi | 75% | 2874 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 40,248 psi | 66% | 2762 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 48,486 psi | 80% | 2877 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,183 psi | 82% | 2867 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,008 psi | 79% | 2913 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 40,741 psi | 67% | 2759 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 92% | 47,805 psi | 78% | 2963 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 47,311 psi | 78% | 2890 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 31,024 psi | 51% | 2549 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,105 psi | 71% | 2861 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 51,082 psi | 84% | 3041 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 44% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,136 psi | 74% | 2835 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 46,905 psi | 77% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,003 psi | 69% | 2756 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 46,934 psi | 77% | 2822 fps | 95.2% |
| IMR 4350 | <<locked>> | 96% | 50,865 psi | 84% | 2949 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 46,891 psi | 77% | 2854 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 36,521 psi | 60% | 2707 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 43,772 psi | 72% | 2848 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 48,718 psi | 80% | 2881 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 46,601 psi | 77% | 2864 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,470 psi | 76% | 2805 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 42,496 psi | 70% | 2769 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 41,901 psi | 69% | 2756 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 44,904 psi | 74% | 2838 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,485 psi | 76% | 2835 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 46,456 psi | 76% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,221 psi | 69% | 2805 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 37,652 psi | 62% | 2746 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 41,437 psi | 68% | 2812 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 44,106 psi | 72% | 2894 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 48,617 psi | 80% | 2887 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,182 psi | 79% | 2910 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 45% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,366 psi | 71% | 2785 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,585 psi | 73% | 2920 fps | 98.2% |
| ReloadSwiss RS 60 | 64.4 gr | 80% | 36,854 psi | 61% | 2785 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,347 psi | 61% | 2766 fps | 95.2% |
| ReloadSwiss RS 70 | 71.9 gr | 88% | 39,566 psi | 65% | 2822 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 50,923 psi | 84% | 2881 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,541 psi | 73% | 2789 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 38,130 psi | 63% | 2710 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 48,486 psi | 80% | 2877 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,901 psi | 69% | 2756 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,601 psi | 77% | 2864 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,496 psi | 70% | 2769 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 44,904 psi | 74% | 2838 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,276 psi | 63% | 2746 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,340 psi | 78% | 2864 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,266 psi | 74% | 2844 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,195 psi | 77% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,610 psi | 65% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 46,586 psi | 76% | 2799 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 47,050 psi | 77% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,644 psi | 77% | 2858 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 38,580 psi | 63% | 2710 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 28,790 psi | 47% | 2543 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 47,239 psi | 78% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,656 psi | 72% | 2766 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,918 psi | 72% | 2769 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,695 psi | 60% | 2641 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 36,883 psi | 61% | 2690 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 48,820 psi | 80% | 2877 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 42,540 psi | 70% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 38,870 psi | 64% | 2753 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 33,620 psi | 55% | 2697 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,576 psi | 53% | 2556 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 48,443 psi | 80% | 2927 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 48,008 psi | 79% | 2966 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,531 psi | 52% | 2690 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,802 psi | 74% | 2848 fps | 99.1% |
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 89 powders for .338 Blaser Mag. loaded with the .338 | 180gr | Impala LW CFN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,150 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,150 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.338" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon Hybrid 100V 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. Alliant Reloder-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .338 Blaser Mag. with the .338 | 180gr | Impala LW CFN 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.