Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 220gr | Nosler Custom Competition bullet and 66 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% | 54,041 psi | 89% | 2671 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,882 psi | 90% | 2687 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 51,938 psi | 85% | 2766 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 88% | 52,605 psi | 86% | 2772 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 86% | 52,054 psi | 85% | 2700 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,606 psi | 88% | 2766 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 51,721 psi | 85% | 2740 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 47,819 psi | 79% | 2769 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,676 psi | 82% | 2759 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 52,373 psi | 86% | 2700 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 52,562 psi | 86% | 2690 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 51,808 psi | 85% | 2694 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 53,969 psi | 89% | 2762 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 52,069 psi | 85% | 2680 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,042 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 51,924 psi | 85% | 2759 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,924 psi | 85% | 2822 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,636 psi | 90% | 2733 fps | 98.2% |
| Bofors RP15 | <<locked>> | 92% | 53,185 psi | 87% | 2753 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 54,650 psi | 90% | 2805 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 53,969 psi | 89% | 2762 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 53,214 psi | 87% | 2762 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 53,243 psi | 87% | 2703 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 52,199 psi | 86% | 2687 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 52,663 psi | 86% | 2615 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,838 psi | 88% | 2874 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,521 psi | 62% | 1686 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,926 psi | 90% | 2677 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 51,851 psi | 85% | 2631 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,230 psi | 89% | 2687 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 90% | 51,793 psi | 85% | 2749 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,281 psi | 74% | 2680 fps | 99.1% |
| Lovex S070 | <<locked>> | 82% | 53,679 psi | 88% | 2654 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 52,098 psi | 86% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 82% | 52,257 psi | 86% | 2680 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,745 psi | 75% | 2703 fps | 100% |
| Norma MRP | <<locked>> | 88% | 53,867 psi | 88% | 2782 fps | 100% |
| Norma URP | <<locked>> | 82% | 53,330 psi | 88% | 2671 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 52,315 psi | 86% | 2766 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 52,127 psi | 86% | 2680 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,592 psi | 90% | 2756 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,377 psi | 63% | 1726 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,882 psi | 90% | 2710 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 53,243 psi | 87% | 2736 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,346 psi | 89% | 2867 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 53,374 psi | 88% | 2831 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 53,069 psi | 87% | 2671 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 88% | 54,882 psi | 90% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 53,679 psi | 88% | 2654 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,302 psi | 89% | 2612 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,520 psi | 90% | 2733 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 54,317 psi | 89% | 2667 fps | 99.4% |
| Somchem S365 | <<locked>> | 84% | 54,244 psi | 89% | 2674 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 51,909 psi | 85% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,810 psi | 90% | 2657 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,911 psi | 90% | 2690 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 53,505 psi | 88% | 2707 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 82% | 54,114 psi | 89% | 2667 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,027 psi | 89% | 2703 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 53,519 psi | 88% | 2782 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 53,650 psi | 88% | 2769 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 54,520 psi | 90% | 2835 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 51,416 psi | 84% | 2828 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,998 psi | 89% | 2615 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,157 psi | 89% | 2812 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,085 psi | 90% | 2707 fps | 100% |
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% | 38,769 psi | 64% | 2421 fps | 99.7% |
| Accurate 4350 | <<locked>> | 80% | 51,416 psi | 84% | 2638 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 42,090 psi | 69% | 2592 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 80% | 39,711 psi | 65% | 2533 fps | 96.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,656 psi | 70% | 2539 fps | 99% |
| ADI AR 2213 | <<locked>> | 80% | 38,174 psi | 63% | 2484 fps | 97% |
| ADI AR 2217 | <<locked>> | 84% | 32,460 psi | 53% | 2349 fps | 95.1% |
| ADI AR 2218 | <<locked>> | 98% | 44,614 psi | 73% | 2700 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 26,005 psi | 43% | 2211 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,134 psi | 71% | 2539 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,240 psi | 81% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,743 psi | 70% | 2536 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,638 psi | 63% | 2490 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,463 psi | 62% | 2441 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,271 psi | 53% | 2379 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,524 psi | 68% | 2592 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 41,756 psi | 69% | 2635 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 42,699 psi | 70% | 2516 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 36,027 psi | 59% | 2434 fps | 97.6% |
| Bofors RP30 | <<locked>> | 82% | 31,836 psi | 52% | 2365 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 38,638 psi | 63% | 2490 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 80% | 30,835 psi | 51% | 2306 fps | 95% |
| Hodgdon H4831 | <<locked>> | 80% | 40,640 psi | 67% | 2484 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,001 psi | 66% | 2470 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,427 psi | 76% | 2526 fps | 100% |
| Hodgdon Retumbo | 65.9 gr | 80% | 31,647 psi | 52% | 2411 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,181 psi | 46% | 1506 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,399 psi | 79% | 2579 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 48,689 psi | 80% | 2585 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,090 psi | 69% | 2477 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 80% | 36,927 psi | 61% | 2467 fps | 96.8% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,561 psi | 53% | 2405 fps | 95.5% |
| Lovex S070 | <<locked>> | 80% | 50,502 psi | 83% | 2608 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,446 psi | 55% | 2310 fps | 98.9% |
| Norma 204 | <<locked>> | 80% | 48,863 psi | 80% | 2625 fps | 99.7% |
| Norma 217 | <<locked>> | 84% | 26,745 psi | 44% | 2264 fps | 95% |
| Norma MRP | <<locked>> | 80% | 40,611 psi | 67% | 2556 fps | 99.6% |
| Norma URP | <<locked>> | 80% | 50,096 psi | 82% | 2625 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,593 psi | 60% | 2474 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 80% | 48,791 psi | 80% | 2628 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,605 psi | 54% | 2359 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,848 psi | 47% | 1542 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,343 psi | 84% | 2661 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,676 psi | 82% | 2684 fps | 100% |
| ReloadSwiss RS 76 | 70.5 gr | 80% | 30,574 psi | 50% | 2385 fps | 97.6% |
| ReloadSwiss RS 80 | 78.2 gr | 88% | 36,854 psi | 61% | 2523 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 43,918 psi | 72% | 2516 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,221 psi | 69% | 2523 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 80% | 50,502 psi | 83% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,850 psi | 83% | 2562 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,887 psi | 69% | 2520 fps | 99% |
| Somchem S361 | <<locked>> | 80% | 44,628 psi | 73% | 2510 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 47,369 psi | 78% | 2579 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,670 psi | 70% | 2503 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 51,459 psi | 84% | 2612 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,188 psi | 61% | 2392 fps | 98.4% |
| Vihtavuori N170 | <<locked>> | 94% | 50,082 psi | 82% | 2654 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 50,691 psi | 83% | 2618 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,785 psi | 69% | 2510 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,567 psi | 67% | 2549 fps | 97.3% |
| Vihtavuori N565 | <<locked>> | 80% | 33,562 psi | 55% | 2382 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 88% | 38,290 psi | 63% | 2539 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 94% | 44,701 psi | 73% | 2703 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,575 psi | 83% | 2569 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,214 psi | 56% | 2487 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,160 psi | 64% | 2438 fps | 98.4% |
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 66 powders for .300 Lapua Mag. loaded with the .308 | 220gr | Nosler Custom Competition. Hodgdon Retumbo delivers the highest muzzle velocity at 2,874 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,874 fps. ADI AR 2218 gives the best case fill at 100 %, and 66 of the 66 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 1:11.5 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 | Nosler Custom Competition 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.