Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 155gr | CutEdge MTAC bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 54,868 psi | 90% | 3091 fps | 98.9% |
| Accurate 3100 | <<locked>> | 98% | 53,722 psi | 88% | 3136 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 54,027 psi | 89% | 3071 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 51,764 psi | 85% | 3130 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 51,488 psi | 85% | 3225 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 84% | 54,520 psi | 90% | 3114 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,258 psi | 87% | 3186 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 54,679 psi | 90% | 3241 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,388 psi | 88% | 3182 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 51,837 psi | 85% | 3081 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,924 psi | 87% | 3199 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,085 psi | 89% | 3219 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,678 psi | 86% | 3169 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,954 psi | 89% | 3235 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,563 psi | 90% | 3215 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,166 psi | 77% | 3143 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,911 psi | 90% | 3307 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,707 psi | 87% | 3212 fps | 98.2% |
| Bofors RP3 | <<locked>> | 82% | 52,402 psi | 86% | 3094 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 53,954 psi | 89% | 3235 fps | 98.5% |
| Bofors RP7 | <<locked>> | 86% | 52,185 psi | 86% | 3084 fps | 98.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,702 psi | 77% | 3074 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 82% | 52,823 psi | 87% | 3114 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,157 psi | 89% | 3189 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 53,693 psi | 88% | 3146 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 54,781 psi | 90% | 3179 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,476 psi | 88% | 3156 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,330 psi | 88% | 3117 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,093 psi | 76% | 3182 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 88% | 54,636 psi | 90% | 3232 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 60% | 1998 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,795 psi | 88% | 3094 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,316 psi | 88% | 3120 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,722 psi | 88% | 3110 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 52,620 psi | 86% | 3127 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,692 psi | 87% | 3107 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 98% | 52,054 psi | 85% | 3205 fps | 97% |
| Lovex S062 | <<locked>> | 82% | 54,056 psi | 89% | 3084 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,896 psi | 88% | 3110 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 51,866 psi | 85% | 3097 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,732 psi | 78% | 3035 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 54,795 psi | 90% | 3146 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,186 psi | 89% | 3176 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 53,461 psi | 88% | 3261 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 54,346 psi | 89% | 3176 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,518 psi | 86% | 3225 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 90% | 53,330 psi | 88% | 3176 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,502 psi | 83% | 3153 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 61% | 2047 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,779 psi | 87% | 3094 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,476 psi | 88% | 3209 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,040 psi | 85% | 3156 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,244 psi | 89% | 3251 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,383 psi | 76% | 3179 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 84% | 52,678 psi | 86% | 3091 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,839 psi | 90% | 3153 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 94% | 51,880 psi | 85% | 3153 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 86% | 52,185 psi | 86% | 3084 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,896 psi | 88% | 3110 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 54,056 psi | 89% | 3084 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 51,866 psi | 85% | 3097 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,578 psi | 90% | 3159 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,679 psi | 88% | 2972 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,417 psi | 88% | 3058 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,042 psi | 90% | 3212 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 52,663 psi | 86% | 3091 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,765 psi | 87% | 3077 fps | 96.3% |
| Somchem S365 | <<locked>> | 92% | 54,143 psi | 89% | 3179 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,489 psi | 86% | 3130 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 86% | 53,983 psi | 89% | 3061 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,736 psi | 87% | 3114 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 51,822 psi | 85% | 3097 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 54,795 psi | 90% | 3064 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 52,011 psi | 85% | 3117 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,171 psi | 87% | 3186 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,650 psi | 88% | 3251 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,153 psi | 81% | 3143 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,446 psi | 86% | 3074 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,360 psi | 89% | 3192 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,763 psi | 83% | 3291 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,489 psi | 86% | 3120 fps | 98.1% |
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 2700 | <<locked>> | 80% | 51,314 psi | 84% | 3028 fps | 98.4% |
| Accurate 3100 | <<locked>> | 84% | 32,851 psi | 54% | 2700 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,807 psi | 83% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,088 psi | 64% | 2881 fps | 98.7% |
| Accurate High Country | 80.8 gr | 90% | 44,541 psi | 73% | 3087 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,935 psi | 79% | 2999 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 43,395 psi | 71% | 2989 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 94% | 47,572 psi | 78% | 3104 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,785 psi | 67% | 2927 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,573 psi | 80% | 3022 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,058 psi | 62% | 2894 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,468 psi | 71% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,321 psi | 66% | 2917 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,814 psi | 67% | 2969 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,731 psi | 46% | 2615 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,618 psi | 52% | 2749 fps | 95.1% |
| Alliant Reloder-26 | 74 gr | 80% | 29,762 psi | 49% | 2733 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 43,033 psi | 71% | 3018 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 49,037 psi | 81% | 3035 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,814 psi | 67% | 2969 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,931 psi | 70% | 2900 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 43,613 psi | 72% | 3005 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 49,487 psi | 81% | 3051 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,249 psi | 68% | 2936 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 44,077 psi | 72% | 2959 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 92% | 47,630 psi | 78% | 3048 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,966 psi | 82% | 3094 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,462 psi | 58% | 2772 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,350 psi | 66% | 3038 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 40,205 psi | 66% | 2943 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 45% | 1788 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,415 psi | 83% | 3035 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,624 psi | 63% | 2818 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,382 psi | 73% | 2933 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 37,492 psi | 62% | 2825 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,429 psi | 81% | 3048 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 45,426 psi | 75% | 3074 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 50,691 psi | 83% | 3031 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,858 psi | 69% | 2877 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 40,001 psi | 66% | 2854 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 34,243 psi | 56% | 2740 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 51,358 psi | 84% | 3087 fps | 100% |
| Norma 204 | <<locked>> | 84% | 44,005 psi | 72% | 2976 fps | 95.9% |
| Norma MRP | 77.2 gr | 86% | 37,173 psi | 61% | 2913 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,841 psi | 64% | 2874 fps | 98.6% |
| Ramshot Grand | <<locked>> | 94% | 45,237 psi | 74% | 3081 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 37,739 psi | 62% | 2858 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 94% | 40,277 psi | 66% | 2940 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,746 psi | 46% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,356 psi | 81% | 3031 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,224 psi | 76% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,943 psi | 64% | 2897 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,710 psi | 62% | 2907 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,260 psi | 61% | 2946 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 46,064 psi | 76% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,049 psi | 74% | 2969 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 42,293 psi | 69% | 2963 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,931 psi | 70% | 2900 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,858 psi | 69% | 2877 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 50,691 psi | 83% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,001 psi | 66% | 2854 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,572 psi | 78% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,224 psi | 78% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,915 psi | 67% | 2815 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,916 psi | 69% | 2956 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,398 psi | 76% | 2979 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,356 psi | 81% | 3015 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 35,375 psi | 58% | 2825 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,405 psi | 61% | 2815 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 44,309 psi | 73% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,364 psi | 66% | 2877 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 39,595 psi | 65% | 2858 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 51,459 psi | 84% | 3009 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,784 psi | 65% | 2874 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,705 psi | 50% | 2697 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 92% | 46,543 psi | 76% | 3110 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 45,759 psi | 75% | 3077 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,494 psi | 65% | 2841 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,249 psi | 68% | 2936 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,381 psi | 40% | 2572 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,337 psi | 70% | 2923 fps | 95.6% |
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 81 powders for .300 Lapua Mag. loaded with the .308 | 155gr | CutEdge MTAC. Alliant Reloder-26 delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,307 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 81 of the 81 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 155.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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, Accurate High Country, Norma MRP rank at the top here: for .300 Lapua Mag. with the .308 | 155gr | CutEdge MTAC 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.