Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 186gr | Peregrine VLR-5 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, Norma MRP and Alliant Reloder-16.
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% | 54,070 psi | 89% | 2917 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 52,359 psi | 86% | 2930 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,853 psi | 88% | 3022 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 54,607 psi | 90% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,228 psi | 86% | 3025 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 51,938 psi | 85% | 2959 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 96% | 53,679 psi | 88% | 3068 fps | 97.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,056 psi | 90% | 3117 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,592 psi | 90% | 3133 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,402 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,576 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,301 psi | 88% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,520 psi | 90% | 3114 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,011 psi | 87% | 3054 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,925 psi | 89% | 3110 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,691 psi | 83% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,077 psi | 72% | 2953 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,752 psi | 90% | 3186 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,284 psi | 81% | 3025 fps | 96.6% |
| Bofors RP3 | <<locked>> | 84% | 52,997 psi | 87% | 2992 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,925 psi | 89% | 3110 fps | 97.7% |
| Bofors RP7 | <<locked>> | 88% | 52,678 psi | 86% | 2972 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 84% | 53,563 psi | 88% | 3009 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,578 psi | 90% | 3081 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 54,273 psi | 89% | 3035 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,592 psi | 88% | 3012 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,027 psi | 90% | 3054 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,042 psi | 90% | 3114 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,201 psi | 59% | 1926 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,650 psi | 90% | 2995 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,780 psi | 88% | 2972 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 53,925 psi | 89% | 3012 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,520 psi | 90% | 3009 fps | 98.7% |
| IMR 4831 | <<locked>> | 92% | 52,779 psi | 87% | 3018 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 53,969 psi | 89% | 3031 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,607 psi | 90% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,534 psi | 90% | 3002 fps | 99.5% |
| Lovex S070 | <<locked>> | 90% | 52,344 psi | 86% | 2986 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,498 psi | 73% | 2858 fps | 97.9% |
| Norma 203B | <<locked>> | 82% | 51,895 psi | 85% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,708 psi | 90% | 3061 fps | 97.5% |
| Norma MRP | <<locked>> | 98% | 53,447 psi | 88% | 3136 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 54,636 psi | 90% | 3064 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 52,721 psi | 87% | 3009 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,750 psi | 87% | 3097 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 92% | 53,650 psi | 88% | 3064 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,036 psi | 77% | 2963 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 60% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,563 psi | 88% | 2992 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,998 psi | 89% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,170 psi | 86% | 3041 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,694 psi | 90% | 3133 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,192 psi | 71% | 2969 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 82% | 53,171 psi | 87% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,258 psi | 87% | 2992 fps | 100% |
| Rottweil R 905 | <<locked>> | 96% | 52,156 psi | 86% | 3038 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 88% | 52,678 psi | 86% | 2972 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,534 psi | 90% | 3002 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 54,607 psi | 90% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,344 psi | 86% | 2986 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,085 psi | 90% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,476 psi | 89% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,114 psi | 89% | 2949 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,706 psi | 85% | 3031 fps | 97.2% |
| Somchem S355 | <<locked>> | 86% | 53,316 psi | 88% | 2989 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 54,012 psi | 89% | 3068 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,750 psi | 87% | 3012 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 82% | 53,461 psi | 88% | 2910 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,983 psi | 89% | 2927 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,679 psi | 90% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,316 psi | 88% | 3009 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,069 psi | 85% | 2982 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 82% | 52,054 psi | 85% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,315 psi | 86% | 3009 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 52,968 psi | 87% | 3068 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,069 psi | 87% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,752 psi | 90% | 3081 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,934 psi | 75% | 3097 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,997 psi | 87% | 3005 fps | 97.3% |
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% | 50,546 psi | 83% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,791 psi | 80% | 2867 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 35,186 psi | 58% | 2657 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 47,892 psi | 79% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,477 psi | 60% | 2713 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 80% | 45,643 psi | 75% | 2848 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 46,804 psi | 77% | 2940 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 51,271 psi | 84% | 3051 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,691 psi | 83% | 3068 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,050 psi | 76% | 2871 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,284 psi | 81% | 2943 fps | 99.9% |
| Alliant Reloder-16 | 75.4 gr | 80% | 35,839 psi | 59% | 2730 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,770 psi | 67% | 2864 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,383 psi | 76% | 2933 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,743 psi | 72% | 2917 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,731 psi | 46% | 2513 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,100 psi | 59% | 2762 fps | 96% |
| Alliant Reloder-26 | 89.4 gr | 86% | 34,577 psi | 57% | 2762 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 46,064 psi | 76% | 2963 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 46,224 psi | 76% | 2877 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,743 psi | 72% | 2917 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,799 psi | 67% | 2740 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 46,818 psi | 77% | 2890 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 38,667 psi | 63% | 2762 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 44,628 psi | 73% | 2858 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,257 psi | 55% | 2618 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,184 psi | 84% | 2992 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,654 psi | 67% | 2838 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 44% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,993 psi | 79% | 2884 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,328 psi | 83% | 2913 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 41,626 psi | 68% | 2776 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,366 psi | 70% | 2779 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 35,186 psi | 58% | 2664 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 50,589 psi | 83% | 2976 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,167 psi | 79% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,624 psi | 65% | 2717 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 37,782 psi | 62% | 2690 fps | 95% |
| Lovex S071 | <<locked>> | 94% | 36,361 psi | 60% | 2684 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 48,660 psi | 80% | 2930 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,601 psi | 78% | 2933 fps | 95.8% |
| Norma MRP | 90.8 gr | 90% | 40,016 psi | 66% | 2864 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,405 psi | 60% | 2710 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,095 psi | 81% | 2949 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 48,994 psi | 80% | 3028 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 82% | 37,985 psi | 62% | 2756 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 43,497 psi | 71% | 2890 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 45% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,891 psi | 77% | 2874 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,410 psi | 71% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,405 psi | 60% | 2730 fps | 96.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,462 psi | 58% | 2733 fps | 96.1% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,132 psi | 66% | 2894 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 49,850 psi | 82% | 2894 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,395 psi | 71% | 2818 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 92% | 45,368 psi | 74% | 2910 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 40,799 psi | 67% | 2740 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,624 psi | 65% | 2717 fps | 96.9% |
| Shooters World Precision | <<locked>> | 80% | 48,167 psi | 79% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,782 psi | 62% | 2690 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,875 psi | 74% | 2877 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,005 psi | 74% | 2740 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,870 psi | 64% | 2661 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,947 psi | 74% | 2907 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 43,859 psi | 72% | 2822 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 32,909 psi | 54% | 2661 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 43,004 psi | 71% | 2831 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 50,198 psi | 82% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,444 psi | 83% | 2874 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,872 psi | 69% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,927 psi | 62% | 2713 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 94% | 42,424 psi | 70% | 2805 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 48,878 psi | 80% | 2864 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,391 psi | 61% | 2713 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 30,603 psi | 50% | 2592 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,260 psi | 61% | 2684 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 38,812 psi | 64% | 2766 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,021 psi | 46% | 2602 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,818 psi | 75% | 2877 fps | 95.5% |
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 | 186gr | Peregrine VLR-5. Alliant Reloder-26 delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,186 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 186.0 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, 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, Alliant Reloder-16 rank at the top here: for .338 Lapua Mag. with the .338 | 186gr | Peregrine VLR-5 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.