Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 176gr | Peregrine Glider (Glider GRM) bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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% | 52,837 psi | 87% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,476 psi | 89% | 2992 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,375 psi | 89% | 3107 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 94% | 51,488 psi | 85% | 3038 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 82% | 53,301 psi | 88% | 2910 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,054 psi | 85% | 2992 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 53,461 psi | 88% | 3051 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,440 psi | 73% | 2867 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,175 psi | 64% | 2822 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,301 psi | 86% | 2989 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,099 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,228 psi | 86% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,026 psi | 87% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 51,648 psi | 85% | 2979 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,040 psi | 87% | 3048 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,853 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,588 psi | 81% | 3018 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,925 psi | 89% | 3110 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 51,982 psi | 85% | 3028 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 55,013 psi | 90% | 2946 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,513 psi | 75% | 2940 fps | 97.2% |
| Bofors RP5 | <<locked>> | 96% | 53,040 psi | 87% | 3048 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,244 psi | 89% | 2943 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,081 psi | 81% | 2963 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 86% | 52,982 psi | 87% | 2992 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 52,518 psi | 86% | 2949 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 53,461 psi | 88% | 2989 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,344 psi | 86% | 2969 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,460 psi | 86% | 2920 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,573 psi | 80% | 3074 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,330 psi | 88% | 3031 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 60% | 1867 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,344 psi | 86% | 2927 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,431 psi | 86% | 2913 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 55,085 psi | 90% | 2986 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,766 psi | 90% | 2976 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 98% | 54,752 psi | 90% | 3087 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 52,823 psi | 87% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,259 psi | 89% | 2959 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,256 psi | 83% | 2910 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 52,924 psi | 87% | 2979 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 52,562 psi | 86% | 3068 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 53,447 psi | 88% | 2979 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,314 psi | 84% | 3038 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 88% | 52,214 psi | 86% | 2982 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,374 psi | 88% | 3035 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,940 psi | 90% | 2953 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,475 psi | 86% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,679 psi | 90% | 3018 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,185 psi | 87% | 3048 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,892 psi | 80% | 3071 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 55,085 psi | 90% | 2943 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,693 psi | 88% | 2963 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 54,534 psi | 90% | 3025 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 54,244 psi | 89% | 2943 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,823 psi | 87% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,259 psi | 89% | 2959 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,214 psi | 87% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,388 psi | 86% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,127 psi | 86% | 2861 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,085 psi | 89% | 3018 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 55,042 psi | 90% | 2940 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,056 psi | 90% | 2953 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 53,258 psi | 87% | 2982 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,984 psi | 90% | 2995 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 52,779 psi | 87% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 51,735 psi | 85% | 2917 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,389 psi | 89% | 2972 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 54,360 psi | 89% | 2976 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,591 psi | 86% | 2995 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,663 psi | 86% | 3058 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,967 psi | 85% | 3031 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,853 psi | 90% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,185 psi | 87% | 2995 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,549 psi | 90% | 3156 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,114 psi | 90% | 2992 fps | 99.2% |
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>> | 80% | 30,240 psi | 50% | 2484 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 41,249 psi | 68% | 2759 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 40,930 psi | 67% | 2844 fps | 95.4% |
| Accurate MAGPRO | 78.4 gr | 90% | 44,498 psi | 73% | 2907 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 50,038 psi | 82% | 2858 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,275 psi | 61% | 2687 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 43,468 psi | 71% | 2858 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 41,568 psi | 68% | 2805 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 34,345 psi | 56% | 2690 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 37,391 psi | 61% | 2687 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,778 psi | 83% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,987 psi | 66% | 2776 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,948 psi | 75% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,043 psi | 61% | 2680 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 37,550 psi | 62% | 2736 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,312 psi | 48% | 2523 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 29,225 psi | 48% | 2533 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,575 psi | 52% | 2648 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 37,231 psi | 61% | 2726 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 51,358 psi | 84% | 2894 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,595 psi | 65% | 2815 fps | 95.4% |
| Bofors RP5 | <<locked>> | 86% | 37,550 psi | 62% | 2736 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 44,817 psi | 74% | 2772 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 39,784 psi | 65% | 2769 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 43,250 psi | 71% | 2815 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 46,093 psi | 76% | 2835 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 43,439 psi | 71% | 2802 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,672 psi | 75% | 2848 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,550 psi | 62% | 2657 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,101 psi | 61% | 2805 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 42,409 psi | 70% | 2831 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 45% | 1667 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,350 psi | 66% | 2700 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,267 psi | 76% | 2802 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 39,537 psi | 65% | 2710 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,453 psi | 70% | 2743 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 41,568 psi | 68% | 2828 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 43,714 psi | 72% | 2749 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 41,930 psi | 69% | 2733 fps | 98.3% |
| Lovex S071 | <<locked>> | 84% | 29,573 psi | 49% | 2467 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 40,030 psi | 66% | 2730 fps | 95.9% |
| Norma MRP | 70.2 gr | 82% | 34,200 psi | 56% | 2680 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 40,901 psi | 67% | 2756 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 41,336 psi | 68% | 2838 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 39,711 psi | 65% | 2743 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 90% | 36,622 psi | 60% | 2707 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 46% | 1706 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,445 psi | 84% | 2897 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,805 psi | 80% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,176 psi | 68% | 2782 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,813 psi | 65% | 2799 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,982 psi | 56% | 2713 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 48,385 psi | 79% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,307 psi | 68% | 2726 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 36,187 psi | 59% | 2661 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 44,817 psi | 74% | 2772 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,714 psi | 72% | 2749 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 41,930 psi | 69% | 2733 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,763 psi | 82% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,095 psi | 81% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,656 psi | 70% | 2690 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,392 psi | 63% | 2717 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 48,515 psi | 80% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,034 psi | 74% | 2776 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 37,478 psi | 62% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,345 psi | 56% | 2589 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 46,354 psi | 76% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,351 psi | 70% | 2749 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 36,347 psi | 60% | 2628 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 41,655 psi | 68% | 2753 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 32,663 psi | 54% | 2598 fps | 98.5% |
| Vihtavuori N560 | 75.3 gr | 88% | 42,670 psi | 70% | 2864 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 42,192 psi | 69% | 2841 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,452 psi | 68% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,439 psi | 71% | 2818 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,759 psi | 42% | 2507 fps | 98.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 38,682 psi | 64% | 2687 fps | 95.7% |
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 77 powders for .300 Lapua Mag. loaded with the .308 | 176gr | Peregrine Glider (Glider GRM). Winchester StaBALL HD delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,156 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 176.0 gr projectile in 0.308" calls for a 1:10.0 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for .300 Lapua Mag. with the .308 | 176gr | Peregrine Glider (Glider GRM) 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.