Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 150gr | Swift A-Frame bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 53,127 psi | 87% | 3173 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 54,621 psi | 90% | 3225 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 53,084 psi | 87% | 3140 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 51,822 psi | 85% | 3205 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 96% | 53,229 psi | 87% | 3264 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,523 psi | 65% | 3012 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,983 psi | 89% | 3163 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 51,721 psi | 85% | 3225 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,823 psi | 87% | 3245 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,056 psi | 90% | 3258 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,852 psi | 87% | 3261 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,780 psi | 88% | 3248 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,690 psi | 82% | 3235 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,940 psi | 89% | 3337 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 51,822 psi | 85% | 3238 fps | 98% |
| Bofors RP3 | <<locked>> | 82% | 54,940 psi | 90% | 3179 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 52,852 psi | 87% | 3261 fps | 98.3% |
| Bofors RP7 | <<locked>> | 86% | 54,201 psi | 89% | 3169 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,139 psi | 81% | 3169 fps | 97% |
| Hodgdon H380 | <<locked>> | 82% | 55,100 psi | 90% | 3199 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,852 psi | 87% | 3215 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 84% | 52,286 psi | 86% | 3169 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 94% | 53,388 psi | 88% | 3202 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,243 psi | 86% | 3182 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,315 psi | 86% | 3146 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,675 psi | 80% | 3284 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,113 psi | 87% | 3248 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 60% | 2051 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,141 psi | 86% | 3146 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,301 psi | 86% | 3136 fps | 99% |
| IMR 4831 | <<locked>> | 90% | 55,114 psi | 90% | 3215 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,650 psi | 90% | 3189 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 98% | 54,679 psi | 90% | 3304 fps | 97.5% |
| Lovex S065 | <<locked>> | 86% | 52,692 psi | 87% | 3136 fps | 99.7% |
| Lovex S070 | <<locked>> | 88% | 54,070 psi | 89% | 3179 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,546 psi | 83% | 3127 fps | 99.4% |
| Norma 204 | <<locked>> | 88% | 52,779 psi | 87% | 3196 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 52,605 psi | 86% | 3287 fps | 99.2% |
| Norma URP | <<locked>> | 88% | 53,142 psi | 87% | 3205 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,329 psi | 84% | 3248 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 88% | 52,141 psi | 86% | 3202 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,548 psi | 88% | 3251 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,347 psi | 61% | 2096 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,955 psi | 90% | 3182 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,127 psi | 86% | 3235 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,636 psi | 90% | 3248 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,997 psi | 87% | 3274 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,110 psi | 81% | 3281 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 82% | 51,648 psi | 85% | 3120 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,388 psi | 88% | 3176 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 94% | 54,259 psi | 89% | 3245 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,201 psi | 89% | 3169 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,692 psi | 87% | 3136 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 54,070 psi | 89% | 3179 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,055 psi | 87% | 3182 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,141 psi | 86% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,127 psi | 86% | 3081 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,809 psi | 88% | 3238 fps | 98.4% |
| Somchem S355 | <<locked>> | 84% | 54,998 psi | 90% | 3176 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,634 psi | 85% | 3104 fps | 96% |
| Somchem S365 | <<locked>> | 90% | 53,185 psi | 87% | 3212 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,027 psi | 90% | 3215 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 84% | 52,779 psi | 87% | 3091 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,114 psi | 90% | 3199 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,491 psi | 89% | 3192 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 88% | 54,317 psi | 89% | 3202 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,475 psi | 86% | 3219 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,649 psi | 86% | 3274 fps | 96.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,083 psi | 86% | 3241 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,781 psi | 90% | 3156 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,040 psi | 87% | 3219 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,215 psi | 89% | 3386 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,329 psi | 84% | 3143 fps | 97.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 32,822 psi | 54% | 2733 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 41,379 psi | 68% | 2972 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,748 psi | 82% | 3081 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,525 psi | 70% | 3012 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 46,528 psi | 76% | 3127 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 37,072 psi | 61% | 2943 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,575 psi | 83% | 3104 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,726 psi | 65% | 2979 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,672 psi | 75% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,337 psi | 70% | 3005 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,277 psi | 66% | 2999 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,501 psi | 48% | 2707 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,562 psi | 55% | 2844 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,836 psi | 52% | 2835 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,525 psi | 70% | 3048 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 51,387 psi | 84% | 3123 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 40,277 psi | 66% | 2999 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 44,802 psi | 74% | 2986 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 45,730 psi | 75% | 3097 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 51,590 psi | 85% | 3136 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,207 psi | 71% | 3022 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 45,934 psi | 75% | 3045 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 92% | 49,734 psi | 82% | 3133 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,791 psi | 80% | 3117 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,463 psi | 62% | 2858 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,755 psi | 65% | 3061 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 42,337 psi | 70% | 3035 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 45% | 1837 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,292 psi | 66% | 2900 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,209 psi | 76% | 3015 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 39,653 psi | 65% | 2917 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,298 psi | 79% | 3071 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 47,688 psi | 78% | 3166 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 43,787 psi | 72% | 2963 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 41,930 psi | 69% | 2940 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 34,243 psi | 56% | 2772 fps | 95.6% |
| Norma 204 | <<locked>> | 82% | 42,902 psi | 70% | 2999 fps | 95.5% |
| Norma MRP | 78.7 gr | 84% | 36,796 psi | 60% | 2940 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 40,785 psi | 67% | 2959 fps | 98.9% |
| Ramshot Grand | <<locked>> | 92% | 44,425 psi | 73% | 3104 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,813 psi | 65% | 2946 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 39,639 psi | 65% | 2966 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 46% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,387 psi | 84% | 3117 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,486 psi | 80% | 3173 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,350 psi | 68% | 2992 fps | 98.9% |
| ReloadSwiss RS 70 | 76.5 gr | 80% | 39,755 psi | 65% | 2999 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,825 psi | 60% | 2969 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 48,327 psi | 79% | 3064 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,978 psi | 77% | 3054 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 41,510 psi | 68% | 2986 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 44,802 psi | 74% | 2986 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,787 psi | 72% | 2963 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 41,930 psi | 69% | 2940 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,719 psi | 82% | 3123 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,979 psi | 80% | 2949 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,873 psi | 70% | 2900 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,147 psi | 68% | 2979 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,486 psi | 80% | 3061 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,327 psi | 79% | 3041 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,449 psi | 61% | 2913 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,450 psi | 65% | 2904 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 46,238 psi | 76% | 2979 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,250 psi | 69% | 2959 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 38,986 psi | 64% | 2881 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 41,785 psi | 69% | 2963 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 32,837 psi | 54% | 2792 fps | 97.4% |
| Vihtavuori N560 | 86.2 gr | 92% | 49,023 psi | 80% | 3205 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 48,646 psi | 80% | 3176 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,408 psi | 68% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,381 psi | 71% | 3025 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,165 psi | 43% | 2680 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,582 psi | 68% | 2946 fps | 95.3% |
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 .300 Lapua Mag. loaded with the .308 | 150gr | Swift A-Frame. Winchester StaBALL HD delivers the highest muzzle velocity at 3,386 fps; across all powders the maximum-charge window runs from 2,051 fps to 3,386 fps. ADI AR 2217 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 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, ReloadSwiss RS 70 rank at the top here: for .300 Lapua Mag. with the .308 | 150gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.