Load Specifications
Load data in caliber .300 Lapua Mag. with .306 | 155gr | Fox Classic Hunter bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Accurate High Country.
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% | 54,621 psi | 90% | 3084 fps | 98.9% |
| Accurate 3100 | <<locked>> | 98% | 53,287 psi | 87% | 3130 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 53,664 psi | 88% | 3064 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 51,459 psi | 84% | 3123 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,911 psi | 90% | 3291 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 84% | 53,998 psi | 89% | 3104 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,649 psi | 86% | 3173 fps | 98% |
| ADI AR 2213 | <<locked>> | 98% | 54,070 psi | 89% | 3228 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,924 psi | 87% | 3169 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,955 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,940 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,634 psi | 86% | 3192 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,563 psi | 88% | 3209 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,243 psi | 86% | 3163 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,287 psi | 87% | 3222 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,114 psi | 89% | 3209 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,615 psi | 77% | 3130 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,201 psi | 89% | 3297 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,272 psi | 86% | 3202 fps | 98.1% |
| Bofors RP3 | <<locked>> | 82% | 52,098 psi | 86% | 3087 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 53,287 psi | 87% | 3222 fps | 98.4% |
| Bofors RP7 | <<locked>> | 86% | 51,692 psi | 85% | 3071 fps | 98.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,209 psi | 76% | 3061 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 82% | 52,547 psi | 86% | 3104 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 53,679 psi | 88% | 3182 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 53,214 psi | 87% | 3136 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 96% | 54,157 psi | 89% | 3166 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,084 psi | 87% | 3146 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,823 psi | 87% | 3107 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,745 psi | 75% | 3173 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 88% | 53,998 psi | 89% | 3219 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 60% | 1998 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,505 psi | 88% | 3084 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,881 psi | 87% | 3110 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,461 psi | 88% | 3107 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 52,141 psi | 86% | 3120 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,112 psi | 86% | 3094 fps | 96.3% |
| IMR 7828 SSC | <<locked>> | 98% | 51,677 psi | 85% | 3199 fps | 96.8% |
| Lovex S062 | <<locked>> | 82% | 53,534 psi | 88% | 3074 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,417 psi | 88% | 3097 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,810 psi | 90% | 3143 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,297 psi | 78% | 3025 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 54,259 psi | 89% | 3136 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,751 psi | 88% | 3166 fps | 98.1% |
| Norma MRP | <<locked>> | 96% | 53,040 psi | 87% | 3251 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 53,853 psi | 88% | 3169 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,924 psi | 85% | 3215 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 90% | 52,866 psi | 87% | 3169 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,937 psi | 82% | 3140 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 61% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,533 psi | 86% | 3091 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,171 psi | 87% | 3202 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 51,576 psi | 85% | 3146 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,795 psi | 88% | 3241 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,919 psi | 75% | 3166 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 84% | 52,373 psi | 86% | 3084 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,230 psi | 89% | 3143 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 96% | 55,085 psi | 90% | 3209 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 51,692 psi | 85% | 3071 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,417 psi | 88% | 3097 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 53,534 psi | 88% | 3074 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,810 psi | 90% | 3143 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,070 psi | 89% | 3150 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,156 psi | 87% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,968 psi | 87% | 3045 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,621 psi | 90% | 3202 fps | 98.5% |
| Somchem S355 | <<locked>> | 84% | 52,373 psi | 86% | 3081 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,431 psi | 86% | 3071 fps | 96.1% |
| Somchem S365 | <<locked>> | 92% | 53,417 psi | 88% | 3169 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,054 psi | 85% | 3120 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 86% | 53,708 psi | 88% | 3054 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,460 psi | 86% | 3107 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,042 psi | 90% | 3150 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 54,534 psi | 90% | 3058 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,013 psi | 90% | 3166 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,707 psi | 87% | 3176 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,229 psi | 87% | 3238 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,054 psi | 85% | 3068 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,882 psi | 88% | 3186 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,951 psi | 82% | 3278 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,112 psi | 86% | 3110 fps | 97.9% |
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% | 51,039 psi | 84% | 3022 fps | 98.3% |
| Accurate 3100 | <<locked>> | 84% | 32,474 psi | 53% | 2690 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 50,227 psi | 82% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,595 psi | 63% | 2867 fps | 98.6% |
| Accurate High Country | 80.2 gr | 90% | 44,135 psi | 72% | 3077 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 47,645 psi | 78% | 2992 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,149 psi | 71% | 2982 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 94% | 47,195 psi | 77% | 3094 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,337 psi | 71% | 2979 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,254 psi | 79% | 3018 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,517 psi | 85% | 3094 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,608 psi | 62% | 2884 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,149 psi | 71% | 3022 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,859 psi | 70% | 2972 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,408 psi | 66% | 2959 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,383 psi | 45% | 2602 fps | 96.4% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,402 psi | 55% | 2805 fps | 96% |
| Alliant Reloder-26 | 75.3 gr | 82% | 31,763 psi | 52% | 2795 fps | 96.1% |
| Bofors RP15 | <<locked>> | 94% | 42,641 psi | 70% | 3009 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 48,689 psi | 80% | 3028 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,408 psi | 66% | 2959 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 42,656 psi | 70% | 2890 fps | 96.7% |
| Hodgdon H1000 | <<locked>> | 98% | 43,149 psi | 71% | 2992 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 49,008 psi | 80% | 3041 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 40,814 psi | 67% | 2923 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 43,772 psi | 72% | 2949 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 50,589 psi | 83% | 3104 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,603 psi | 81% | 3084 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,172 psi | 58% | 2766 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,885 psi | 65% | 3025 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 39,958 psi | 66% | 2936 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 45% | 1785 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,082 psi | 82% | 3028 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,348 psi | 63% | 2808 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,135 psi | 72% | 2923 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 37,188 psi | 61% | 2818 fps | 98.3% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,878 psi | 80% | 3035 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 96% | 48,051 psi | 79% | 3127 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 50,357 psi | 83% | 3022 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,423 psi | 68% | 2867 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 39,740 psi | 65% | 2844 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 33,837 psi | 56% | 2730 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 50,850 psi | 83% | 3077 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,598 psi | 72% | 2969 fps | 95.7% |
| Norma MRP | 76.6 gr | 86% | 36,782 psi | 60% | 2900 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,508 psi | 63% | 2867 fps | 98.5% |
| Ramshot Grand | <<locked>> | 94% | 44,846 psi | 74% | 3068 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 37,478 psi | 62% | 2851 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 39,769 psi | 65% | 2930 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 45% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,095 psi | 81% | 3025 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,919 psi | 75% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,624 psi | 63% | 2890 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,492 psi | 62% | 2900 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,825 psi | 60% | 2930 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 45,759 psi | 75% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,688 psi | 78% | 3018 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 88% | 41,872 psi | 69% | 2949 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,656 psi | 70% | 2890 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,423 psi | 68% | 2867 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 50,357 psi | 83% | 3022 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,740 psi | 65% | 2844 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,253 psi | 78% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,891 psi | 77% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,640 psi | 67% | 2805 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,495 psi | 68% | 2946 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 45,890 psi | 75% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,023 psi | 80% | 3009 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 35,041 psi | 58% | 2818 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 39,581 psi | 65% | 2867 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 43,976 psi | 72% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,914 psi | 66% | 2864 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 39,218 psi | 64% | 2848 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 50,981 psi | 84% | 3002 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,349 psi | 65% | 2864 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,400 psi | 50% | 2687 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 94% | 49,559 psi | 81% | 3169 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,102 psi | 64% | 2828 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,944 psi | 67% | 2927 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,860 psi | 42% | 2635 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,945 psi | 69% | 2913 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 81 powders for .300 Lapua Mag. loaded with the .306 | 155gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,297 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,297 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 0.306" calls for a 1:11.5 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. Norma MRP, Alliant Reloder-26, Accurate High Country rank at the top here: for .300 Lapua Mag. with the .306 | 155gr | Fox Classic Hunter 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.