Load Specifications
Load data in caliber .338 Win Mag. with .338 | 175gr | Barnes X S bullet and 89 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 Power Pro 2000-MR and ReloadSwiss RS 52.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 55,143 psi | 88% | 2887 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,766 psi | 86% | 2910 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,215 psi | 87% | 2917 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,534 psi | 86% | 2956 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,534 psi | 86% | 2956 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 53,795 psi | 86% | 2956 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,098 psi | 84% | 3002 fps | 97.9% |
| ADI AR 2206H | <<locked>> | 88% | 53,911 psi | 86% | 2969 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 94% | 54,476 psi | 87% | 2963 fps | 98.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,275 psi | 90% | 2979 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 56,434 psi | 90% | 2963 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,389 psi | 87% | 3031 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,188 psi | 90% | 3127 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,433 psi | 87% | 2992 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,679 psi | 88% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,940 psi | 88% | 3005 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,299 psi | 81% | 2995 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 54,607 psi | 88% | 3100 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,999 psi | 90% | 2861 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,214 psi | 85% | 2976 fps | 98.2% |
| Bofors RP3 | <<locked>> | 94% | 55,100 psi | 88% | 3009 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,868 psi | 88% | 2910 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,521 psi | 89% | 3009 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,113 psi | 85% | 3041 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 86% | 55,927 psi | 90% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 56,115 psi | 90% | 3012 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 88% | 54,404 psi | 87% | 2986 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,586 psi | 75% | 2877 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 56,130 psi | 90% | 3061 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,447 psi | 57% | 1827 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,128 psi | 87% | 2963 fps | 99.4% |
| IMR 3031 | <<locked>> | 92% | 55,288 psi | 89% | 2999 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,420 psi | 90% | 2986 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 96% | 56,260 psi | 90% | 2946 fps | 95.9% |
| IMR 4198 | <<locked>> | 82% | 54,317 psi | 87% | 2851 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,961 psi | 70% | 2838 fps | 96.3% |
| IMR 4895 | <<locked>> | 92% | 56,275 psi | 90% | 3041 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 88% | 56,275 psi | 90% | 2979 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 82% | 53,490 psi | 86% | 2917 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 88% | 53,534 psi | 86% | 2956 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,563 psi | 86% | 2894 fps | 99.1% |
| Lovex S062 | <<locked>> | 92% | 54,041 psi | 87% | 2953 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,376 psi | 90% | 2986 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 56,405 psi | 90% | 2976 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 56,260 psi | 90% | 2976 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,128 psi | 87% | 2995 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2986 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 92% | 54,172 psi | 87% | 3015 fps | 99.1% |
| Ramshot TAC | <<locked>> | 86% | 53,142 psi | 85% | 2927 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 56,014 psi | 90% | 3009 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 84% | 53,853 psi | 86% | 2920 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,810 psi | 57% | 1867 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,883 psi | 90% | 2963 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,084 psi | 85% | 2933 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 54,824 psi | 88% | 3074 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,447 psi | 87% | 3110 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,242 psi | 82% | 3015 fps | 97.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 51,634 psi | 83% | 3028 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,636 psi | 88% | 2917 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,621 psi | 86% | 2923 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 96% | 54,694 psi | 88% | 2992 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,376 psi | 90% | 2986 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,534 psi | 86% | 2956 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,041 psi | 87% | 2953 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,579 psi | 89% | 2927 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,825 psi | 90% | 3048 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,955 psi | 88% | 2910 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,303 psi | 89% | 2966 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,347 psi | 89% | 2989 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,404 psi | 87% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,099 psi | 87% | 2861 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 54,215 psi | 87% | 2963 fps | 99.8% |
| Somchem S335 | <<locked>> | 88% | 54,027 psi | 87% | 2867 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,389 psi | 87% | 2956 fps | 99.1% |
| Somchem S355 | <<locked>> | 96% | 55,216 psi | 89% | 2992 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,963 psi | 74% | 2936 fps | 99.4% |
| Unknown powderᴾ | <<locked>> | 100% | 55,564 psi | 89% | 3048 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 84% | 54,331 psi | 87% | 2838 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,273 psi | 87% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,651 psi | 89% | 2940 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,417 psi | 86% | 2904 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,040 psi | 85% | 2920 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,519 psi | 86% | 2982 fps | 98% |
| Vihtavuori N530 | <<locked>> | 86% | 53,403 psi | 86% | 2927 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 92% | 55,114 psi | 88% | 2949 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,721 psi | 85% | 2989 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 54,360 psi | 87% | 2963 fps | 99.5% |
| Winchester 748 | <<locked>> | 84% | 53,388 psi | 86% | 2982 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,084 psi | 85% | 2966 fps | 99.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 46,296 psi | 74% | 2749 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,560 psi | 81% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,118 psi | 64% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,976 psi | 71% | 2792 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 43,976 psi | 71% | 2792 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 37,869 psi | 61% | 2664 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 39,958 psi | 64% | 2772 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 42,395 psi | 68% | 2753 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 38,377 psi | 62% | 2648 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,193 psi | 71% | 2766 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,743 psi | 70% | 2772 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,140 psi | 82% | 2976 fps | 99.2% |
| Alliant Power Pro 2000-MR | 62.7 gr | 82% | 40,814 psi | 65% | 2818 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,853 psi | 57% | 2625 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,677 psi | 83% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,348 psi | 61% | 2684 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,250 psi | 68% | 2828 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 86% | 37,304 psi | 60% | 2740 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,750 psi | 85% | 2815 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,176 psi | 66% | 2746 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 35,592 psi | 57% | 2628 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,021 psi | 74% | 2759 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,047 psi | 69% | 2789 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,528 psi | 75% | 2920 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 80% | 46,601 psi | 75% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 43,874 psi | 70% | 2792 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 42,728 psi | 69% | 2769 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 34,809 psi | 56% | 2615 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,521 psi | 59% | 2680 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 42% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,985 psi | 61% | 2648 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 38,624 psi | 62% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 37,797 psi | 61% | 2628 fps | 95.2% |
| IMR 4166 Enduron | <<locked>> | 94% | 53,098 psi | 85% | 2894 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 51,300 psi | 82% | 2805 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 41,394 psi | 66% | 2785 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 39,204 psi | 63% | 2717 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 44,193 psi | 71% | 2766 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,256 psi | 81% | 2861 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 41,611 psi | 67% | 2746 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 42,728 psi | 69% | 2694 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 38,232 psi | 61% | 2648 fps | 97.4% |
| Lovex S065 | <<locked>> | 94% | 47,413 psi | 76% | 2831 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 42,134 psi | 68% | 2720 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 41,887 psi | 67% | 2730 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 37,797 psi | 61% | 2674 fps | 95.8% |
| Norma URP | <<locked>> | 94% | 42,438 psi | 68% | 2818 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,086 psi | 59% | 2677 fps | 95.2% |
| Ramshot TAC | <<locked>> | 82% | 47,137 psi | 76% | 2818 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,294 psi | 69% | 2779 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,732 psi | 77% | 2812 fps | 98.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,832 psi | 43% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,255 psi | 79% | 2854 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 49,908 psi | 80% | 2877 fps | 95.2% |
| ReloadSwiss RS 52 | 59.3 gr | 80% | 39,537 psi | 63% | 2779 fps | 95.6% |
| ReloadSwiss RS 60 | 60.2 gr | 80% | 32,924 psi | 53% | 2635 fps | 96.7% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,177 psi | 68% | 2841 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 45,513 psi | 73% | 2907 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 46,180 psi | 74% | 2772 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 40,277 psi | 65% | 2671 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 80% | 33,663 psi | 54% | 2572 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 47,413 psi | 76% | 2831 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,611 psi | 67% | 2746 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 38,232 psi | 61% | 2648 fps | 97.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,141 psi | 84% | 2871 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 36,361 psi | 58% | 2664 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,895 psi | 83% | 2864 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 45,411 psi | 73% | 2792 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,828 psi | 65% | 2720 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,091 psi | 69% | 2674 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,839 psi | 57% | 2536 fps | 99.4% |
| Somchem S321 | <<locked>> | 80% | 47,761 psi | 77% | 2851 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 42,931 psi | 69% | 2680 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 42,047 psi | 67% | 2733 fps | 96.9% |
| Somchem S355 | <<locked>> | 80% | 34,534 psi | 55% | 2579 fps | 95.2% |
| Somchem S365 | <<locked>> | 88% | 32,097 psi | 51% | 2605 fps | 95.5% |
| Unknown powder | <<locked>> | 92% | 43,410 psi | 70% | 2825 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 48,428 psi | 78% | 2749 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,134 psi | 69% | 2674 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,030 psi | 63% | 2661 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,610 psi | 64% | 2661 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 32,663 psi | 52% | 2513 fps | 96.1% |
| Vihtavuori N160 | <<locked>> | 92% | 41,785 psi | 67% | 2766 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 44,237 psi | 71% | 2762 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,319 psi | 61% | 2648 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 43,758 psi | 70% | 2825 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 35,070 psi | 56% | 2582 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 46,760 psi | 75% | 2871 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,458 psi | 79% | 2904 fps | 99% |
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 109 powders for .338 Win Mag. loaded with the .338 | 175gr | Barnes X S. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,127 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 175.0 gr projectile in 0.338" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .338 Win Mag. with the .338 | 175gr | Barnes X S they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.