Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 165gr | Nosler CT FailSafe bullet and 75 powders. The key underlying parameters are shown in the table above.
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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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 52,881 psi | 87% | 3035 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 54,534 psi | 90% | 3077 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,230 psi | 89% | 3186 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 96% | 55,114 psi | 90% | 3186 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 53,127 psi | 87% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 51,953 psi | 85% | 3071 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 96% | 53,142 psi | 87% | 3127 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,262 psi | 64% | 2890 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,128 psi | 89% | 3018 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 51,837 psi | 85% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,765 psi | 87% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,795 psi | 90% | 3117 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,678 psi | 86% | 3123 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,490 psi | 88% | 3104 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,414 psi | 81% | 3097 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,780 psi | 88% | 3196 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 51,692 psi | 85% | 3104 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 54,911 psi | 90% | 3031 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,426 psi | 75% | 3018 fps | 96.6% |
| Bofors RP5 | <<locked>> | 96% | 52,678 psi | 86% | 3123 fps | 98.7% |
| Bofors RP7 | <<locked>> | 86% | 54,157 psi | 89% | 3025 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,863 psi | 80% | 3038 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 86% | 52,823 psi | 87% | 3074 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 84% | 52,315 psi | 86% | 3031 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 94% | 53,171 psi | 87% | 3064 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,112 psi | 86% | 3045 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,127 psi | 86% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,385 psi | 79% | 3150 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 53,011 psi | 87% | 3110 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,796 psi | 60% | 1936 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,069 psi | 85% | 3005 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,301 psi | 86% | 2995 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 54,969 psi | 90% | 3071 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,563 psi | 90% | 3051 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 54,462 psi | 89% | 3163 fps | 97.9% |
| Lovex S065 | <<locked>> | 86% | 52,794 psi | 87% | 2995 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 54,099 psi | 89% | 3041 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,386 psi | 83% | 2992 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 52,620 psi | 86% | 3058 fps | 98.3% |
| Norma MRP | <<locked>> | 94% | 52,359 psi | 86% | 3150 fps | 99.5% |
| Norma URP | <<locked>> | 88% | 53,142 psi | 87% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,085 psi | 90% | 3182 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 51,996 psi | 85% | 3061 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,069 psi | 87% | 3110 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,449 psi | 61% | 1978 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,795 psi | 90% | 3035 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,083 psi | 86% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,433 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,692 psi | 87% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,863 psi | 80% | 3146 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 82% | 51,634 psi | 85% | 2979 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,403 psi | 88% | 3038 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 94% | 54,143 psi | 89% | 3104 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 54,157 psi | 89% | 3025 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,794 psi | 87% | 2995 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 54,099 psi | 89% | 3041 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,026 psi | 87% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,112 psi | 86% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,112 psi | 86% | 2943 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,693 psi | 88% | 3097 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 54,911 psi | 90% | 3025 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,013 psi | 90% | 3028 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 53,055 psi | 87% | 3068 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,897 psi | 90% | 3077 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 52,779 psi | 87% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,042 psi | 90% | 3054 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,302 psi | 89% | 3051 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 54,244 psi | 89% | 3061 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,417 psi | 86% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,446 psi | 86% | 3136 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,924 psi | 85% | 3110 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,592 psi | 90% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,026 psi | 87% | 3077 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,838 psi | 88% | 3238 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,955 psi | 90% | 3074 fps | 98.8% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 32,866 psi | 54% | 2621 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 41,437 psi | 68% | 2841 fps | 99.4% |
| Accurate High Country | <<locked>> | 88% | 43,816 psi | 72% | 2982 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 92% | 47,732 psi | 78% | 3048 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 49,777 psi | 82% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,827 psi | 65% | 2822 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 46,398 psi | 76% | 2995 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 34,650 psi | 57% | 2762 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,763 psi | 83% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,958 psi | 66% | 2854 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,788 psi | 75% | 2982 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,726 psi | 65% | 2818 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,176 psi | 66% | 2871 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,486 psi | 48% | 2595 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,343 psi | 51% | 2664 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,778 psi | 52% | 2720 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 39,798 psi | 65% | 2861 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 51,387 psi | 84% | 2979 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,395 psi | 70% | 2949 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 40,176 psi | 66% | 2871 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,918 psi | 74% | 2854 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 42,627 psi | 70% | 2904 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 43,323 psi | 71% | 2894 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 45,934 psi | 75% | 2910 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 46,398 psi | 76% | 2940 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,498 psi | 75% | 2920 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,507 psi | 62% | 2733 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,260 psi | 61% | 2874 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 42,337 psi | 70% | 2907 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 45% | 1729 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,321 psi | 66% | 2776 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,224 psi | 76% | 2881 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 39,682 psi | 65% | 2789 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,208 psi | 74% | 2874 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 44,411 psi | 73% | 2966 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 43,714 psi | 72% | 2828 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,119 psi | 69% | 2815 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,082 psi | 53% | 2602 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 40,089 psi | 66% | 2805 fps | 95.3% |
| Norma MRP | <<locked>> | 82% | 34,316 psi | 56% | 2753 fps | 95% |
| Norma URP | <<locked>> | 80% | 40,944 psi | 67% | 2831 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 44,367 psi | 73% | 2979 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 39,769 psi | 65% | 2822 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 36,767 psi | 60% | 2776 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,963 psi | 46% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,416 psi | 84% | 2979 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,573 psi | 80% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,249 psi | 68% | 2861 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,769 psi | 65% | 2871 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,608 psi | 60% | 2854 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 48,501 psi | 80% | 2923 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,019 psi | 72% | 2861 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 38,827 psi | 64% | 2799 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 44,918 psi | 74% | 2854 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,714 psi | 72% | 2828 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 42,119 psi | 69% | 2815 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,705 psi | 82% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,153 psi | 81% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,931 psi | 70% | 2772 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,479 psi | 63% | 2792 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,399 psi | 79% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,124 psi | 79% | 2907 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,492 psi | 62% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,927 psi | 61% | 2720 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 46,412 psi | 76% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,351 psi | 70% | 2828 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 36,390 psi | 60% | 2700 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 41,829 psi | 69% | 2831 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,953 psi | 54% | 2677 fps | 98.1% |
| Vihtavuori N560 | <<locked>> | 90% | 45,643 psi | 75% | 3005 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 45,165 psi | 74% | 2979 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,365 psi | 68% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,323 psi | 71% | 2894 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,165 psi | 43% | 2582 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,754 psi | 64% | 2762 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 75 powders for .300 Lapua Mag. loaded with the .308 | 165gr | Nosler CT FailSafe. Winchester StaBALL HD delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,238 fps. ADI AR 2225 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP30 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.