Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 185gr | Fox Classic Hunter bullet and 80 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 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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 53,447 psi | 88% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 51,750 psi | 85% | 2923 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,953 psi | 87% | 3012 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 53,853 psi | 88% | 2969 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 51,445 psi | 84% | 3015 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 54,636 psi | 90% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,881 psi | 87% | 3058 fps | 97.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,273 psi | 89% | 3107 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,838 psi | 88% | 3127 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 52,910 psi | 87% | 3051 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 51,895 psi | 85% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,040 psi | 85% | 2995 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,576 psi | 86% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,737 psi | 88% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,199 psi | 86% | 3041 fps | 97.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,055 psi | 87% | 3100 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,009 psi | 82% | 3035 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,366 psi | 71% | 2943 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,824 psi | 88% | 3176 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,457 psi | 80% | 3015 fps | 96.2% |
| Bofors RP3 | <<locked>> | 84% | 52,446 psi | 86% | 2989 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,055 psi | 87% | 3100 fps | 97.4% |
| Bofors RP7 | <<locked>> | 88% | 52,185 psi | 86% | 2969 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 84% | 52,837 psi | 87% | 3002 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 53,896 psi | 88% | 3071 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 88% | 53,824 psi | 88% | 3035 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,678 psi | 86% | 3002 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,259 psi | 89% | 3045 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,186 psi | 89% | 3104 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 59% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,940 psi | 90% | 3012 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,940 psi | 89% | 2989 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,156 psi | 87% | 2966 fps | 98.5% |
| IMR 4350 | <<locked>> | 92% | 53,258 psi | 87% | 3002 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,896 psi | 88% | 2999 fps | 98.6% |
| IMR 4831 | <<locked>> | 92% | 52,083 psi | 86% | 3012 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 53,432 psi | 88% | 3028 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,041 psi | 89% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,882 psi | 88% | 2995 fps | 99.4% |
| Lovex S070 | <<locked>> | 90% | 51,692 psi | 85% | 2979 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,714 psi | 72% | 2848 fps | 97.6% |
| Norma 203B | <<locked>> | 84% | 54,795 psi | 90% | 3035 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,896 psi | 88% | 3051 fps | 97.2% |
| Norma MRP | <<locked>> | 98% | 52,562 psi | 86% | 3127 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 53,940 psi | 89% | 3061 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 52,054 psi | 85% | 3005 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 52,823 psi | 87% | 3054 fps | 99.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,311 psi | 76% | 2949 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,811 psi | 60% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 52,953 psi | 87% | 2986 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,026 psi | 87% | 3097 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 51,459 psi | 84% | 3038 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,824 psi | 88% | 3123 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 82% | 52,649 psi | 86% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,489 psi | 86% | 2982 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,578 psi | 90% | 3028 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 98% | 54,897 psi | 90% | 3091 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 88% | 52,185 psi | 86% | 2969 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,882 psi | 88% | 2995 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 54,041 psi | 89% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 51,692 psi | 85% | 2979 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,375 psi | 89% | 3048 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,780 psi | 88% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,490 psi | 88% | 2943 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,418 psi | 89% | 3084 fps | 97.6% |
| Somchem S355 | <<locked>> | 86% | 52,605 psi | 86% | 2982 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,214 psi | 87% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 51,953 psi | 85% | 3002 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 82% | 52,866 psi | 87% | 2907 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,243 psi | 87% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,998 psi | 89% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,634 psi | 86% | 3002 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,271 psi | 84% | 2976 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 54,955 psi | 90% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 51,677 psi | 85% | 3002 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 98% | 52,243 psi | 86% | 3061 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,272 psi | 86% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,070 psi | 89% | 3074 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,179 psi | 74% | 3087 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,170 psi | 86% | 2995 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% | 49,908 psi | 82% | 2864 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,341 psi | 79% | 2864 fps | 96.9% |
| Accurate 3100 | <<locked>> | 90% | 37,289 psi | 61% | 2710 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 47,326 psi | 78% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,940 psi | 59% | 2703 fps | 97% |
| ADI AR 2208 | <<locked>> | 80% | 45,150 psi | 74% | 2841 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 46,224 psi | 76% | 2933 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 98% | 50,517 psi | 83% | 3038 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,096 psi | 82% | 3061 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,354 psi | 76% | 2933 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,484 psi | 75% | 2864 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,762 psi | 80% | 2940 fps | 99.8% |
| Alliant Reloder-16 | 74.8 gr | 80% | 35,389 psi | 58% | 2720 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,147 psi | 66% | 2854 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,788 psi | 75% | 2920 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,151 psi | 76% | 2972 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,153 psi | 48% | 2559 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,607 psi | 58% | 2753 fps | 95.6% |
| Alliant Reloder-26 | 88.7 gr | 86% | 34,055 psi | 56% | 2753 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 45,310 psi | 74% | 2953 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 45,701 psi | 75% | 2874 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,151 psi | 76% | 2972 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 42,946 psi | 71% | 2789 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,166 psi | 76% | 2881 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 40,886 psi | 67% | 2818 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 44,019 psi | 72% | 2848 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,793 psi | 54% | 2608 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,647 psi | 83% | 2989 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,103 psi | 66% | 2828 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 44% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,503 psi | 85% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,485 psi | 78% | 2877 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,864 psi | 82% | 2907 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 41,191 psi | 68% | 2769 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,756 psi | 69% | 2766 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 34,679 psi | 57% | 2657 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 50,053 psi | 82% | 2969 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,616 psi | 78% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,175 psi | 64% | 2713 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 39,856 psi | 65% | 2743 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 35,752 psi | 59% | 2674 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 48,095 psi | 79% | 2927 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,963 psi | 77% | 2923 fps | 95.5% |
| Norma MRP | <<locked>> | 90% | 39,436 psi | 65% | 2854 fps | 95% |
| Norma URP | <<locked>> | 80% | 35,911 psi | 59% | 2703 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 48,573 psi | 80% | 2946 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,405 psi | 61% | 2746 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 42,815 psi | 70% | 2881 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 45% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,253 psi | 76% | 2864 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,728 psi | 70% | 2917 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,795 psi | 59% | 2720 fps | 96.5% |
| ReloadSwiss RS 70 | 81.8 gr | 80% | 35,056 psi | 58% | 2726 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 49,313 psi | 81% | 2890 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,873 psi | 70% | 2815 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 51,068 psi | 84% | 2969 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 92% | 44,730 psi | 73% | 2900 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 42,946 psi | 71% | 2789 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,175 psi | 64% | 2713 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 47,616 psi | 78% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,856 psi | 65% | 2743 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,353 psi | 73% | 2871 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,556 psi | 73% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,305 psi | 63% | 2651 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,324 psi | 73% | 2897 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 43,352 psi | 71% | 2815 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 32,314 psi | 53% | 2651 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 42,409 psi | 70% | 2822 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 49,588 psi | 81% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,893 psi | 82% | 2867 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,365 psi | 68% | 2743 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,434 psi | 61% | 2707 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 96% | 44,759 psi | 73% | 2854 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 48,225 psi | 79% | 2858 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,811 psi | 60% | 2703 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 30,008 psi | 49% | 2582 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,753 psi | 60% | 2677 fps | 99.1% |
| Winchester 760 | <<locked>> | 82% | 41,017 psi | 67% | 2822 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,586 psi | 45% | 2585 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,049 psi | 74% | 2867 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 80 powders for .338 Lapua Mag. loaded with the .338 | 185gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,176 fps. Accurate 3100 gives the best case fill at 100 %, and 80 of the 80 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 185.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, ReloadSwiss RS 70 rank at the top here: for .338 Lapua Mag. with the .338 | 185gr | Fox Classic Hunter 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.