Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 180gr | Ferrobull Entox Sport bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 and Norma MRP.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 53,838 psi | 88% | 2959 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 52,170 psi | 86% | 2969 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,693 psi | 88% | 3061 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 54,331 psi | 89% | 3015 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 51,808 psi | 85% | 3061 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 55,013 psi | 90% | 3054 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,330 psi | 88% | 3104 fps | 97.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,911 psi | 90% | 3156 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,331 psi | 89% | 3179 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,301 psi | 86% | 3025 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,344 psi | 86% | 3041 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,953 psi | 87% | 3127 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,230 psi | 89% | 3153 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,837 psi | 87% | 3094 fps | 97.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,766 psi | 88% | 3150 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,633 psi | 83% | 3084 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,961 psi | 72% | 2989 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,636 psi | 90% | 3225 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,037 psi | 81% | 3061 fps | 96.2% |
| Bofors RP3 | <<locked>> | 84% | 52,823 psi | 87% | 3035 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,766 psi | 88% | 3150 fps | 97.5% |
| Bofors RP7 | <<locked>> | 88% | 52,620 psi | 86% | 3015 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 84% | 53,345 psi | 88% | 3051 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 54,505 psi | 89% | 3120 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 54,128 psi | 89% | 3077 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,359 psi | 88% | 3054 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,795 psi | 90% | 3094 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,940 psi | 90% | 3156 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 59% | 1962 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,404 psi | 89% | 3038 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,490 psi | 88% | 3012 fps | 98.5% |
| IMR 4350 | <<locked>> | 92% | 53,708 psi | 88% | 3048 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,302 psi | 89% | 3048 fps | 98.5% |
| IMR 4831 | <<locked>> | 92% | 52,547 psi | 86% | 3058 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 53,693 psi | 88% | 3071 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,505 psi | 89% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,288 psi | 89% | 3045 fps | 99.4% |
| Lovex S070 | <<locked>> | 90% | 52,243 psi | 86% | 3028 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,222 psi | 73% | 2894 fps | 97.6% |
| Norma 203B | <<locked>> | 82% | 51,663 psi | 85% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,578 psi | 90% | 3100 fps | 97.2% |
| Norma MRP | <<locked>> | 98% | 53,229 psi | 87% | 3173 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 54,433 psi | 89% | 3107 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 52,489 psi | 86% | 3051 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 53,490 psi | 88% | 3104 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,920 psi | 77% | 2999 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,811 psi | 60% | 2008 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,505 psi | 88% | 3035 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,606 psi | 88% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,040 psi | 85% | 3084 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,418 psi | 89% | 3176 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,091 psi | 71% | 3002 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 82% | 52,852 psi | 87% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,026 psi | 87% | 3031 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,071 psi | 90% | 3077 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 96% | 51,793 psi | 85% | 3074 fps | 97% |
| Rottweil R 907 | <<locked>> | 88% | 52,620 psi | 86% | 3015 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,288 psi | 89% | 3045 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 54,505 psi | 89% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,243 psi | 86% | 3028 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,955 psi | 90% | 3097 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,273 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,969 psi | 89% | 2989 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,071 psi | 90% | 3130 fps | 97.7% |
| Somchem S355 | <<locked>> | 86% | 53,185 psi | 87% | 3031 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,896 psi | 88% | 3110 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,533 psi | 86% | 3048 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 82% | 53,345 psi | 88% | 2956 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,737 psi | 88% | 2969 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,447 psi | 89% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,982 psi | 87% | 3048 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,953 psi | 85% | 3025 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 82% | 51,953 psi | 85% | 2959 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,301 psi | 86% | 3048 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 98% | 52,765 psi | 87% | 3107 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,866 psi | 87% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,505 psi | 89% | 3120 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,687 psi | 75% | 3133 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,678 psi | 86% | 3041 fps | 97% |
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 2495 | <<locked>> | 80% | 50,372 psi | 83% | 2910 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,689 psi | 80% | 2907 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 37,594 psi | 62% | 2749 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 47,747 psi | 78% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,289 psi | 60% | 2743 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 80% | 45,556 psi | 75% | 2887 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 46,615 psi | 77% | 2979 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 51,198 psi | 84% | 3087 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,459 psi | 83% | 3110 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,861 psi | 75% | 2910 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,095 psi | 81% | 2986 fps | 99.8% |
| Alliant Reloder-16 | 76.8 gr | 80% | 35,578 psi | 58% | 2762 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,480 psi | 66% | 2897 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,151 psi | 76% | 2966 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,731 psi | 77% | 3018 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,472 psi | 48% | 2598 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,027 psi | 59% | 2795 fps | 95.6% |
| Alliant Reloder-26 | 91.2 gr | 86% | 34,519 psi | 57% | 2799 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 45,905 psi | 75% | 2999 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 46,021 psi | 76% | 2917 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,731 psi | 77% | 3018 fps | 95.8% |
| Bofors RP7 | <<locked>> | 82% | 43,352 psi | 71% | 2835 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,572 psi | 76% | 2930 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 41,379 psi | 68% | 2864 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 44,353 psi | 73% | 2890 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,025 psi | 54% | 2648 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,068 psi | 84% | 3035 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,495 psi | 66% | 2871 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 44% | 1759 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,877 psi | 79% | 2927 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,125 psi | 82% | 2953 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 41,495 psi | 68% | 2815 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,061 psi | 69% | 2812 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 35,027 psi | 57% | 2697 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 50,386 psi | 83% | 3015 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,877 psi | 79% | 2920 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,479 psi | 65% | 2756 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 40,263 psi | 66% | 2789 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 36,114 psi | 59% | 2717 fps | 95% |
| Norma 203B | <<locked>> | 80% | 48,472 psi | 80% | 2969 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,427 psi | 78% | 2972 fps | 95.5% |
| Norma MRP | 92.6 gr | 90% | 39,914 psi | 66% | 2900 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 36,245 psi | 60% | 2743 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,907 psi | 80% | 2989 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,840 psi | 62% | 2789 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 43,453 psi | 71% | 2927 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,369 psi | 45% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,760 psi | 77% | 2910 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,091 psi | 71% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,260 psi | 60% | 2762 fps | 96.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,302 psi | 58% | 2762 fps | 95.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,030 psi | 66% | 2923 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 49,588 psi | 81% | 2933 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,236 psi | 71% | 2858 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 51,619 psi | 85% | 3018 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 45,165 psi | 74% | 2946 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 43,352 psi | 71% | 2835 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,479 psi | 65% | 2756 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 47,877 psi | 79% | 2920 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,263 psi | 66% | 2789 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,614 psi | 73% | 2917 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,846 psi | 74% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,292 psi | 68% | 2753 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,759 psi | 73% | 2940 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 43,743 psi | 72% | 2861 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 32,619 psi | 54% | 2694 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 42,815 psi | 70% | 2864 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 49,951 psi | 82% | 2904 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,270 psi | 83% | 2917 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,713 psi | 68% | 2785 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,739 psi | 62% | 2749 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 45,339 psi | 74% | 2900 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 48,675 psi | 80% | 2904 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,202 psi | 61% | 2746 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 30,414 psi | 50% | 2621 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,101 psi | 61% | 2720 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 41,379 psi | 68% | 2864 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,920 psi | 46% | 2628 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,658 psi | 75% | 2913 fps | 95.2% |
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 93 powders for .338 Lapua Mag. loaded with the .338 | 180gr | Ferrobull Entox Sport. Alliant Reloder-26 delivers the highest muzzle velocity at 3,225 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,225 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, 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 3100, ADI AR 2213, ADI AR 2225 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-26, Alliant Reloder-16, Norma MRP rank at the top here: for .338 Lapua 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 MAGPRO, ADI AR 2225, Baschieri & Pellagri 109 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.