Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 186gr | Peregrine Glider (Glider GRM) bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 and Winchester StaBALL HD.
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% | 54,665 psi | 90% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,576 psi | 86% | 2884 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 52,547 psi | 86% | 2999 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 94% | 53,461 psi | 88% | 3002 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 54,505 psi | 89% | 2851 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,838 psi | 88% | 2946 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 51,387 psi | 84% | 2943 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,963 psi | 75% | 2835 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,625 psi | 67% | 2792 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,041 psi | 89% | 2943 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,911 psi | 89% | 2946 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,853 psi | 90% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,345 psi | 88% | 2933 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,911 psi | 90% | 2999 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,141 psi | 86% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,445 psi | 84% | 2972 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,185 psi | 86% | 3002 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,751 psi | 88% | 2907 fps | 95.9% |
| Bofors RP15 | <<locked>> | 98% | 53,809 psi | 88% | 2982 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2904 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 54,911 psi | 90% | 2999 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 52,170 psi | 86% | 2835 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,589 psi | 83% | 2923 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 86% | 54,621 psi | 90% | 2943 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 53,969 psi | 89% | 2900 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 51,547 psi | 85% | 2884 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,983 psi | 89% | 2923 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,128 psi | 89% | 2867 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,415 psi | 83% | 3038 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 55,114 psi | 90% | 2982 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1814 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,621 psi | 88% | 2874 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,882 psi | 88% | 2861 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,301 psi | 88% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,953 psi | 87% | 2871 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 52,692 psi | 87% | 2979 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 54,157 psi | 89% | 2858 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,344 psi | 86% | 2854 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,953 psi | 85% | 2864 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,607 psi | 90% | 2933 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 35,955 psi | 59% | 2707 fps | 97% |
| Norma MRP | <<locked>> | 94% | 54,534 psi | 90% | 3022 fps | 100% |
| Norma URP | <<locked>> | 88% | 55,085 psi | 90% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,243 psi | 87% | 2999 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 53,983 psi | 89% | 2933 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,256 psi | 84% | 2930 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,550 psi | 62% | 1857 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,331 psi | 89% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,605 psi | 86% | 2910 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,955 psi | 90% | 2999 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,792 psi | 83% | 3035 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,556 psi | 75% | 2907 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 82% | 53,243 psi | 87% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,114 psi | 90% | 2913 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 52,620 psi | 86% | 2920 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 52,170 psi | 86% | 2835 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,157 psi | 89% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,344 psi | 86% | 2854 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,708 psi | 90% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,693 psi | 88% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,505 psi | 88% | 2812 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,185 psi | 86% | 2913 fps | 99.3% |
| Somchem S355 | <<locked>> | 82% | 52,982 psi | 87% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,040 psi | 87% | 2851 fps | 97.9% |
| Somchem S365 | <<locked>> | 88% | 51,387 psi | 84% | 2874 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,142 psi | 87% | 2894 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 54,375 psi | 89% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,287 psi | 87% | 2864 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,605 psi | 86% | 2871 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 52,388 psi | 86% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,360 psi | 89% | 2943 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,534 psi | 90% | 3018 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,780 psi | 88% | 2989 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 46,992 psi | 77% | 2917 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,736 psi | 87% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,853 psi | 90% | 2946 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,779 psi | 87% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,997 psi | 87% | 2887 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% | 31,459 psi | 52% | 2454 fps | 96.6% |
| Accurate 4350 | <<locked>> | 80% | 42,743 psi | 70% | 2717 fps | 99.9% |
| Accurate High Country | 71 gr | 84% | 39,566 psi | 65% | 2743 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 88% | 42,960 psi | 71% | 2805 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 51,329 psi | 84% | 2802 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,868 psi | 59% | 2589 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 41,872 psi | 69% | 2756 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 40,161 psi | 66% | 2710 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 31,256 psi | 51% | 2543 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,201 psi | 59% | 2592 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,307 psi | 68% | 2730 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,485 psi | 78% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,868 psi | 59% | 2589 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 84% | 36,201 psi | 59% | 2638 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,400 psi | 50% | 2490 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,253 psi | 46% | 2444 fps | 95.7% |
| Alliant Reloder-26 | 69.6 gr | 80% | 32,866 psi | 54% | 2618 fps | 98.5% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,517 psi | 83% | 2848 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 36,056 psi | 59% | 2631 fps | 95.4% |
| Bofors RP30 | <<locked>> | 94% | 38,450 psi | 63% | 2720 fps | 95.7% |
| Bofors RP5 | <<locked>> | 84% | 36,201 psi | 59% | 2638 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 46,050 psi | 76% | 2726 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 92% | 38,392 psi | 63% | 2677 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 44,556 psi | 73% | 2766 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 47,485 psi | 78% | 2785 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 41,800 psi | 69% | 2700 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,118 psi | 68% | 2687 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,667 psi | 63% | 2608 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 33,649 psi | 55% | 2644 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 43,976 psi | 72% | 2792 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,470 psi | 45% | 1621 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,539 psi | 68% | 2657 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,529 psi | 78% | 2756 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 40,741 psi | 67% | 2664 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 40,930 psi | 67% | 2644 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 40,074 psi | 66% | 2730 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 44,962 psi | 74% | 2703 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 43,221 psi | 71% | 2690 fps | 99% |
| Lovex S071 | <<locked>> | 82% | 28,805 psi | 47% | 2382 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 41,408 psi | 68% | 2694 fps | 97% |
| Norma 217 | <<locked>> | 98% | 33,605 psi | 55% | 2644 fps | 96% |
| Norma MRP | <<locked>> | 80% | 32,967 psi | 54% | 2585 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 42,293 psi | 69% | 2710 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 39,726 psi | 65% | 2736 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 41,104 psi | 67% | 2703 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 32,793 psi | 54% | 2546 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 46% | 1657 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,473 psi | 83% | 2890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,757 psi | 70% | 2740 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,162 psi | 68% | 2756 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,822 psi | 54% | 2621 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,351 psi | 70% | 2838 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,850 psi | 82% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,784 psi | 65% | 2628 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 35,041 psi | 58% | 2569 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 46,050 psi | 76% | 2726 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,962 psi | 74% | 2703 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 43,221 psi | 71% | 2690 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,314 psi | 84% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,314 psi | 83% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,918 psi | 72% | 2648 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,722 psi | 57% | 2562 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 49,864 psi | 82% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,279 psi | 71% | 2674 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,943 psi | 64% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,563 psi | 58% | 2552 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,732 psi | 78% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,743 psi | 72% | 2707 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 35,128 psi | 58% | 2536 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 43,047 psi | 71% | 2707 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,953 psi | 56% | 2562 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 86% | 41,089 psi | 67% | 2762 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 40,785 psi | 67% | 2746 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 98% | 43,743 psi | 72% | 2851 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,743 psi | 70% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,759 psi | 73% | 2772 fps | 99.1% |
| Winchester StaBALL HD | 66.9 gr | 80% | 26,789 psi | 44% | 2490 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,202 psi | 61% | 2589 fps | 95.9% |
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 78 powders for .300 Lapua Mag. loaded with the .308 | 186gr | Peregrine Glider (Glider GRM). Winchester StaBALL HD delivers the highest muzzle velocity at 3,048 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,048 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 186.0 gr projectile in 0.308" calls for a 1:9.5 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. Accurate High Country, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for .300 Lapua Mag. with the .308 | 186gr | 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.