Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 220gr | Lapua ScenarL bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and ReloadSwiss RS 80.
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>> | 90% | 54,404 psi | 89% | 2677 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 52,272 psi | 86% | 2772 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 88% | 52,953 psi | 87% | 2779 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 86% | 52,460 psi | 86% | 2710 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,969 psi | 89% | 2776 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 98% | 51,996 psi | 85% | 2746 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 48,153 psi | 79% | 2776 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,140 psi | 82% | 2769 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 52,707 psi | 87% | 2707 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 52,997 psi | 87% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 52,141 psi | 86% | 2700 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,288 psi | 89% | 2769 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 52,431 psi | 86% | 2687 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 51,895 psi | 85% | 2749 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 52,286 psi | 86% | 2766 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,620 psi | 86% | 2835 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,042 psi | 90% | 2743 fps | 98.3% |
| Bofors RP15 | <<locked>> | 92% | 53,563 psi | 88% | 2759 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 51,721 psi | 85% | 2762 fps | 99.8% |
| Bofors RP5 | <<locked>> | 90% | 54,288 psi | 89% | 2769 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 53,476 psi | 88% | 2769 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 53,592 psi | 88% | 2713 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 52,721 psi | 87% | 2700 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 53,069 psi | 87% | 2625 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,404 psi | 89% | 2884 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,536 psi | 62% | 1690 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 52,025 psi | 85% | 2638 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 52,257 psi | 86% | 2641 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,520 psi | 90% | 2694 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 90% | 52,156 psi | 86% | 2756 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,803 psi | 75% | 2690 fps | 99.2% |
| Lovex S070 | <<locked>> | 82% | 54,070 psi | 89% | 2664 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 52,446 psi | 86% | 2651 fps | 100% |
| Norma 204 | <<locked>> | 82% | 52,605 psi | 86% | 2690 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 46,238 psi | 76% | 2713 fps | 100% |
| Norma MRP | <<locked>> | 88% | 54,215 psi | 89% | 2785 fps | 100% |
| Norma URP | <<locked>> | 82% | 53,737 psi | 88% | 2677 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 52,895 psi | 87% | 2776 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 52,489 psi | 86% | 2687 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 51,242 psi | 84% | 2713 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 63% | 1729 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 53,664 psi | 88% | 2746 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,882 psi | 90% | 2877 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,099 psi | 89% | 2844 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 86% | 53,432 psi | 88% | 2680 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 86% | 51,880 psi | 85% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,070 psi | 89% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,650 psi | 90% | 2621 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,868 psi | 90% | 2740 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 54,563 psi | 90% | 2674 fps | 99.4% |
| Somchem S365 | <<locked>> | 84% | 54,650 psi | 90% | 2680 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 52,257 psi | 86% | 2664 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 51,851 psi | 85% | 2651 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 53,954 psi | 89% | 2717 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 82% | 54,476 psi | 89% | 2677 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,665 psi | 90% | 2713 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 53,867 psi | 88% | 2789 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 94% | 54,172 psi | 89% | 2779 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 55,013 psi | 90% | 2844 fps | 99.3% |
| Vihtavuori N570 | <<locked>> | 98% | 51,982 psi | 85% | 2838 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,563 psi | 90% | 2625 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,592 psi | 90% | 2818 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 51,735 psi | 85% | 2657 fps | 99.9% |
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 3100 | <<locked>> | 80% | 39,102 psi | 64% | 2431 fps | 99.8% |
| Accurate High Country | <<locked>> | 80% | 42,453 psi | 70% | 2598 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 80% | 40,059 psi | 66% | 2543 fps | 96.6% |
| ADI AR 2209 | <<locked>> | 80% | 43,018 psi | 71% | 2549 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 38,508 psi | 63% | 2493 fps | 97.2% |
| ADI AR 2217 | <<locked>> | 84% | 32,721 psi | 54% | 2359 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 98% | 44,947 psi | 74% | 2710 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 80% | 26,136 psi | 43% | 2218 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,482 psi | 71% | 2549 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,647 psi | 82% | 2651 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,105 psi | 71% | 2543 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,001 psi | 64% | 2500 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,681 psi | 62% | 2448 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,576 psi | 53% | 2388 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,930 psi | 69% | 2598 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 42,163 psi | 69% | 2644 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 42,946 psi | 71% | 2523 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 36,376 psi | 60% | 2441 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 32,155 psi | 53% | 2375 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 39,001 psi | 64% | 2500 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 31,096 psi | 51% | 2316 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 80% | 40,988 psi | 67% | 2493 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,306 psi | 66% | 2477 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,659 psi | 77% | 2530 fps | 100% |
| Hodgdon Retumbo | 66.3 gr | 80% | 31,792 psi | 52% | 2415 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,108 psi | 46% | 1506 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,776 psi | 80% | 2585 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,892 psi | 80% | 2589 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,438 psi | 70% | 2487 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 80% | 37,246 psi | 61% | 2474 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,822 psi | 54% | 2415 fps | 95.7% |
| Lovex S070 | <<locked>> | 80% | 50,865 psi | 84% | 2615 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,779 psi | 55% | 2320 fps | 99% |
| Norma 204 | <<locked>> | 80% | 49,168 psi | 81% | 2635 fps | 99.7% |
| Norma 217 | <<locked>> | 84% | 27,021 psi | 44% | 2274 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 40,973 psi | 67% | 2566 fps | 99.6% |
| Norma URP | <<locked>> | 80% | 50,473 psi | 83% | 2631 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,898 psi | 61% | 2484 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 80% | 49,153 psi | 81% | 2635 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,880 psi | 54% | 2369 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,935 psi | 48% | 1545 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,067 psi | 82% | 2694 fps | 100% |
| ReloadSwiss RS 76 | 71 gr | 80% | 30,821 psi | 51% | 2395 fps | 97.8% |
| ReloadSwiss RS 80 | 78.7 gr | 88% | 37,144 psi | 61% | 2533 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 44,092 psi | 72% | 2523 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,598 psi | 70% | 2533 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 50,865 psi | 84% | 2615 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,155 psi | 84% | 2569 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,250 psi | 69% | 2530 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 44,933 psi | 74% | 2516 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 47,819 psi | 79% | 2585 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,033 psi | 71% | 2513 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 37,492 psi | 62% | 2398 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 94% | 50,531 psi | 83% | 2664 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 51,053 psi | 84% | 2625 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,192 psi | 69% | 2520 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,915 psi | 67% | 2559 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 33,881 psi | 56% | 2392 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 88% | 38,609 psi | 63% | 2546 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 94% | 45,194 psi | 74% | 2717 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,923 psi | 84% | 2575 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,621 psi | 57% | 2497 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,450 psi | 65% | 2448 fps | 98.5% |
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 63 powders for .300 Lapua Mag. loaded with the .308 | 220gr | Lapua ScenarL. Hodgdon Retumbo delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,884 fps. ADI AR 2218 gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 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. Hodgdon Retumbo, ReloadSwiss RS 76, ReloadSwiss RS 80 rank at the top here: for .300 Lapua Mag. with the .308 | 220gr | Lapua ScenarL 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.