Load Specifications
Load data in caliber .338 Win Mag. with .338 | 180gr | Ferrobull Entox Sport bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and ReloadSwiss RS 60.
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>> | 88% | 53,534 psi | 86% | 2848 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 55,506 psi | 89% | 2920 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,128 psi | 87% | 2904 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,664 psi | 86% | 2930 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 54,012 psi | 87% | 2946 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 46,209 psi | 74% | 2884 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 53,403 psi | 86% | 2795 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,795 psi | 86% | 2818 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,159 psi | 90% | 2986 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 96% | 53,664 psi | 86% | 2923 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 82% | 54,172 psi | 87% | 2917 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,506 psi | 89% | 2943 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 90% | 55,274 psi | 89% | 2923 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,490 psi | 86% | 2999 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 55,811 psi | 89% | 3097 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 56,434 psi | 90% | 2999 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 53,330 psi | 86% | 2854 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 53,766 psi | 86% | 2966 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,224 psi | 74% | 2897 fps | 97.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 53,751 psi | 86% | 3064 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,159 psi | 90% | 2838 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 56,086 psi | 90% | 2999 fps | 98.8% |
| Bofors RP3 | <<locked>> | 96% | 53,287 psi | 85% | 2959 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,360 psi | 87% | 2881 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,273 psi | 87% | 2966 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 52,634 psi | 84% | 3009 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 86% | 56,260 psi | 90% | 2946 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 53,693 psi | 86% | 2917 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 54,897 psi | 88% | 2969 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 90% | 53,200 psi | 85% | 2943 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,366 psi | 68% | 2779 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 55,680 psi | 89% | 3028 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,418 psi | 55% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,795 psi | 88% | 2949 fps | 99.6% |
| IMR 3031 | <<locked>> | 92% | 55,912 psi | 90% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,287 psi | 85% | 2913 fps | 98.9% |
| IMR 4198 | <<locked>> | 84% | 54,114 psi | 87% | 2822 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,324 psi | 71% | 2828 fps | 96.6% |
| IMR 4895 | <<locked>> | 94% | 55,129 psi | 88% | 3002 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 55,506 psi | 89% | 2943 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 86% | 55,564 psi | 89% | 2930 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 55,347 psi | 89% | 2963 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,069 psi | 85% | 2864 fps | 99.1% |
| Lovex S062 | <<locked>> | 96% | 55,970 psi | 90% | 2959 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2890 fps | 96.7% |
| Norma 200 | <<locked>> | 82% | 56,434 psi | 90% | 2874 fps | 100% |
| Norma 201 | <<locked>> | 92% | 54,650 psi | 88% | 2930 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 55,347 psi | 89% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 96% | 56,391 psi | 90% | 3009 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 46,470 psi | 75% | 2884 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 53,359 psi | 86% | 2979 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 56,289 psi | 90% | 2956 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,201 psi | 89% | 2972 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,388 psi | 86% | 2890 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 56% | 1831 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,274 psi | 89% | 2930 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 55,767 psi | 89% | 2953 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 53,737 psi | 86% | 3035 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 53,577 psi | 86% | 3071 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 46,224 psi | 74% | 2907 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2923 fps | 96% |
| Rottweil R 901 | <<locked>> | 90% | 55,376 psi | 89% | 2917 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 54,911 psi | 88% | 2923 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 52,881 psi | 85% | 2946 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2890 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,347 psi | 89% | 2963 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 55,970 psi | 90% | 2959 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,013 psi | 88% | 2897 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,288 psi | 87% | 2923 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,158 psi | 88% | 3012 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,621 psi | 88% | 2884 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,041 psi | 87% | 2927 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 54,592 psi | 88% | 2956 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 53,693 psi | 86% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,432 psi | 86% | 2828 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 53,185 psi | 85% | 2923 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 55,898 psi | 90% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 53,563 psi | 86% | 2923 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 53,519 psi | 86% | 2946 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,278 psi | 66% | 2825 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 53,447 psi | 86% | 2805 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 53,737 psi | 86% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,172 psi | 87% | 2897 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,854 psi | 90% | 2917 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2933 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 48,907 psi | 78% | 2887 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 90% | 56,144 psi | 90% | 2946 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 54,070 psi | 87% | 2913 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,080 psi | 77% | 2890 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,270 psi | 81% | 2877 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 55,521 psi | 89% | 2992 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 54,244 psi | 87% | 2963 fps | 99.6% |
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% | 41,495 psi | 67% | 2654 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,237 psi | 73% | 2756 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 33,518 psi | 54% | 2546 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 40,379 psi | 65% | 2700 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 31,734 psi | 51% | 2520 fps | 98.3% |
| Accurate 4350 | <<locked>> | 96% | 40,016 psi | 64% | 2762 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,314 psi | 81% | 2749 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,691 psi | 81% | 2772 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,261 psi | 61% | 2654 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 39,349 psi | 63% | 2657 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 50,473 psi | 81% | 2861 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,350 psi | 65% | 2674 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 39,305 psi | 63% | 2677 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 46,789 psi | 75% | 2881 fps | 98.7% |
| Alliant Power Pro 2000-MR | 63 gr | 84% | 39,479 psi | 63% | 2776 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 33,620 psi | 54% | 2562 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,195 psi | 76% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 38,928 psi | 62% | 2687 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,872 psi | 66% | 2782 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 35,636 psi | 57% | 2687 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,197 psi | 79% | 2740 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 39,929 psi | 64% | 2703 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 32,866 psi | 53% | 2559 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,351 psi | 68% | 2674 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,290 psi | 61% | 2677 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,235 psi | 68% | 2815 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 80% | 46,079 psi | 74% | 2789 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 46,789 psi | 75% | 2808 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 41,785 psi | 67% | 2736 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 38,566 psi | 62% | 2667 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,911 psi | 56% | 2612 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,490 psi | 55% | 2618 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,541 psi | 41% | 1598 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,173 psi | 60% | 2618 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 37,521 psi | 60% | 2674 fps | 99.9% |
| IMR 4064 | <<locked>> | 82% | 36,390 psi | 58% | 2585 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 47,848 psi | 77% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 38,725 psi | 62% | 2717 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 34,940 psi | 56% | 2605 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 40,350 psi | 65% | 2674 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 45,078 psi | 72% | 2762 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 36,477 psi | 58% | 2628 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 38,899 psi | 62% | 2598 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 33,591 psi | 54% | 2533 fps | 96.1% |
| Lovex S065 | <<locked>> | 96% | 45,658 psi | 73% | 2782 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 52,939 psi | 85% | 2825 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,217 psi | 60% | 2605 fps | 97.3% |
| Norma 202 | <<locked>> | 80% | 37,391 psi | 60% | 2625 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 35,810 psi | 57% | 2618 fps | 95.4% |
| Norma URP | <<locked>> | 96% | 40,698 psi | 65% | 2769 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 37,811 psi | 61% | 2684 fps | 95.8% |
| Ramshot TAC | <<locked>> | 84% | 45,992 psi | 74% | 2779 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,305 psi | 63% | 2680 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 43,816 psi | 70% | 2723 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,773 psi | 41% | 1637 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,397 psi | 73% | 2769 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 48,689 psi | 78% | 2838 fps | 95.2% |
| ReloadSwiss RS 52 | 59.7 gr | 82% | 37,840 psi | 61% | 2730 fps | 95.3% |
| ReloadSwiss RS 60 | 59.1 gr | 80% | 29,051 psi | 47% | 2510 fps | 95% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,033 psi | 69% | 2844 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,222 psi | 71% | 2861 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,799 psi | 65% | 2664 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 35,346 psi | 57% | 2556 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 84% | 32,938 psi | 53% | 2552 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 45,658 psi | 73% | 2782 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,477 psi | 58% | 2628 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 33,591 psi | 54% | 2533 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 47,906 psi | 77% | 2782 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 50,749 psi | 81% | 2871 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,985 psi | 59% | 2671 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,022 psi | 77% | 2782 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 43,845 psi | 70% | 2746 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,811 psi | 59% | 2615 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,088 psi | 63% | 2582 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,039 psi | 51% | 2441 fps | 98.8% |
| Somchem S321 | <<locked>> | 80% | 43,149 psi | 69% | 2749 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 38,450 psi | 62% | 2585 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 37,768 psi | 61% | 2628 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 34,200 psi | 55% | 2569 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 31,734 psi | 51% | 2592 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 44,440 psi | 71% | 2667 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,276 psi | 63% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,418 psi | 55% | 2556 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 35,317 psi | 57% | 2559 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 30,342 psi | 49% | 2451 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 94% | 40,103 psi | 64% | 2717 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 40,205 psi | 64% | 2667 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 34,026 psi | 55% | 2543 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 96% | 41,959 psi | 67% | 2772 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,795 psi | 57% | 2589 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 39,233 psi | 63% | 2707 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,911 psi | 58% | 2615 fps | 96.1% |
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 109 powders for .338 Win Mag. loaded with the .338 | 180gr | Ferrobull Entox Sport. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,097 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,097 fps. Accurate 4350 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 52–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for .338 Win Mag. with the .338 | 180gr | Ferrobull Entox Sport they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Hodgdon H414 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.