Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 185gr | Peregrine VRG-3 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, Norma MRP 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% | 54,984 psi | 90% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 52,997 psi | 87% | 2953 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,897 psi | 90% | 3048 fps | 99.5% |
| Accurate 4064 | <<locked>> | 82% | 52,040 psi | 85% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,084 psi | 87% | 3048 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,663 psi | 86% | 2982 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,563 psi | 90% | 3094 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,171 psi | 87% | 3002 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,359 psi | 88% | 3025 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,186 psi | 89% | 3114 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 51,634 psi | 85% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,867 psi | 88% | 3077 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,911 psi | 90% | 3136 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,808 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,918 psi | 74% | 2982 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 51,880 psi | 85% | 3146 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,270 psi | 83% | 3054 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 53,940 psi | 89% | 3018 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,911 psi | 90% | 3136 fps | 97.9% |
| Bofors RP7 | <<locked>> | 88% | 53,476 psi | 88% | 2999 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 54,433 psi | 89% | 3035 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 51,938 psi | 85% | 3045 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 86% | 51,735 psi | 85% | 3002 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,447 psi | 89% | 3031 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 51,953 psi | 85% | 3071 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 60% | 1939 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 51,851 psi | 85% | 2959 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,447 psi | 89% | 2995 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 54,781 psi | 90% | 3035 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 51,851 psi | 85% | 2972 fps | 98.4% |
| IMR 4831 | <<locked>> | 92% | 53,795 psi | 88% | 3041 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,766 psi | 90% | 3054 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,983 psi | 89% | 3018 fps | 95.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,359 psi | 88% | 3114 fps | 96.2% |
| Lovex S062 | <<locked>> | 82% | 51,996 psi | 85% | 2956 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 51,851 psi | 85% | 2969 fps | 99.3% |
| Lovex S070 | <<locked>> | 90% | 53,127 psi | 87% | 3012 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,382 psi | 75% | 2884 fps | 98.1% |
| Norma 203B | <<locked>> | 82% | 52,678 psi | 86% | 3009 fps | 100% |
| Norma 204 | <<locked>> | 90% | 51,938 psi | 85% | 3025 fps | 97% |
| Norma MRP | <<locked>> | 98% | 54,708 psi | 90% | 3166 fps | 99% |
| Norma URP | <<locked>> | 90% | 52,025 psi | 85% | 3035 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 82% | 53,592 psi | 88% | 3031 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,867 psi | 88% | 3130 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 92% | 54,534 psi | 90% | 3091 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,979 psi | 79% | 2989 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,796 psi | 60% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,360 psi | 89% | 3015 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,955 psi | 90% | 3130 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,127 psi | 87% | 3068 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 51,837 psi | 85% | 3097 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,019 psi | 72% | 2999 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 82% | 53,824 psi | 88% | 2969 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,983 psi | 89% | 3012 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,533 psi | 86% | 3002 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 96% | 53,040 psi | 87% | 3061 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 88% | 53,476 psi | 88% | 2999 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 51,851 psi | 85% | 2969 fps | 99.3% |
| Shooters World Precision | <<locked>> | 82% | 51,996 psi | 85% | 2956 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,127 psi | 87% | 3012 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,315 psi | 86% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,071 psi | 90% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,027 psi | 90% | 2976 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 52,576 psi | 86% | 3058 fps | 97.5% |
| Somchem S355 | <<locked>> | 86% | 54,056 psi | 89% | 3009 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 55,085 psi | 90% | 3094 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,592 psi | 88% | 3038 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 54,201 psi | 89% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,563 psi | 90% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 51,924 psi | 85% | 2933 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,143 psi | 89% | 3031 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,011 psi | 87% | 3012 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 82% | 52,939 psi | 87% | 2940 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,229 psi | 87% | 3031 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 54,143 psi | 89% | 3094 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,926 psi | 90% | 3153 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,896 psi | 88% | 2995 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 52,098 psi | 86% | 3045 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,239 psi | 78% | 3127 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,969 psi | 89% | 3031 fps | 97.5% |
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% | 51,285 psi | 84% | 2887 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,617 psi | 81% | 2894 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 35,897 psi | 59% | 2680 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 48,631 psi | 80% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,057 psi | 61% | 2733 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,267 psi | 76% | 2867 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 44,498 psi | 73% | 2904 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,818 psi | 77% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,922 psi | 82% | 2966 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,376 psi | 60% | 2753 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,495 psi | 68% | 2887 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,150 psi | 72% | 2894 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,541 psi | 73% | 2943 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,282 psi | 46% | 2536 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,490 psi | 57% | 2726 fps | 95.3% |
| Alliant Reloder-26 | 89 gr | 84% | 32,793 psi | 54% | 2720 fps | 95.4% |
| Bofors RP15 | <<locked>> | 96% | 43,918 psi | 72% | 2927 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 47,036 psi | 77% | 2900 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,541 psi | 73% | 2943 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 41,336 psi | 68% | 2762 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 47,558 psi | 78% | 2913 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 39,349 psi | 65% | 2789 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 45,281 psi | 74% | 2881 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,837 psi | 56% | 2638 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 82% | 41,437 psi | 68% | 2864 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 44% | 1736 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,617 psi | 80% | 2904 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,010 psi | 84% | 2936 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 42,221 psi | 69% | 2799 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,859 psi | 70% | 2799 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 35,737 psi | 59% | 2687 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 51,213 psi | 84% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,560 psi | 83% | 2959 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 49,748 psi | 82% | 3045 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 48,805 psi | 80% | 2900 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,161 psi | 66% | 2740 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 38,450 psi | 63% | 2717 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 37,115 psi | 61% | 2710 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 49,269 psi | 81% | 2953 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,092 psi | 74% | 2894 fps | 95.2% |
| Norma MRP | 92.6 gr | 90% | 40,944 psi | 67% | 2897 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,101 psi | 61% | 2736 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 49,951 psi | 82% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 49,850 psi | 82% | 3054 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 36,013 psi | 59% | 2717 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 96% | 41,321 psi | 68% | 2851 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,485 psi | 45% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,543 psi | 78% | 2894 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,135 psi | 72% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,101 psi | 61% | 2753 fps | 97.1% |
| ReloadSwiss RS 70 | 84 gr | 80% | 36,143 psi | 59% | 2759 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,915 psi | 67% | 2923 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 50,502 psi | 83% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,208 psi | 73% | 2844 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 49,269 psi | 81% | 2943 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 43,134 psi | 71% | 2874 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 41,336 psi | 68% | 2762 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,161 psi | 66% | 2740 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 48,805 psi | 80% | 2900 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,450 psi | 63% | 2717 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,600 psi | 75% | 2900 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,658 psi | 75% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,363 psi | 65% | 2680 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 45,832 psi | 75% | 2933 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 44,483 psi | 73% | 2844 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 33,475 psi | 55% | 2684 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 40,944 psi | 67% | 2795 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 50,966 psi | 84% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,256 psi | 84% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,569 psi | 70% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,493 psi | 63% | 2736 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 43,207 psi | 71% | 2831 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 49,588 psi | 81% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,058 psi | 62% | 2736 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 31,183 psi | 51% | 2615 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 51,097 psi | 84% | 3084 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,782 psi | 62% | 2703 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 39,479 psi | 65% | 2792 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,672 psi | 44% | 2559 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,760 psi | 77% | 2904 fps | 95.9% |
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 92 powders for .338 Lapua Mag. loaded with the .338 | 185gr | Peregrine VRG-3. Norma MRP delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,166 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.338" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2217, 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .338 Lapua Mag. with the .338 | 185gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, 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.