Load Specifications
Load data in caliber .300 Lapua Mag. with .310 | 215gr | Rhino Solid Shank 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% | 54,389 psi | 89% | 2710 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 52,315 psi | 86% | 2808 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 88% | 53,069 psi | 87% | 2812 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 86% | 52,388 psi | 86% | 2740 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,911 psi | 89% | 2805 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 52,011 psi | 85% | 2779 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 48,167 psi | 79% | 2805 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,067 psi | 82% | 2802 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 52,678 psi | 86% | 2740 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 52,866 psi | 87% | 2730 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 52,098 psi | 86% | 2730 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,302 psi | 89% | 2802 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 52,330 psi | 86% | 2717 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 51,851 psi | 85% | 2782 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 52,286 psi | 86% | 2799 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,547 psi | 86% | 2864 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,042 psi | 90% | 2772 fps | 98.1% |
| Bofors RP15 | <<locked>> | 92% | 53,519 psi | 88% | 2789 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 51,590 psi | 85% | 2792 fps | 99.8% |
| Bofors RP5 | <<locked>> | 90% | 54,302 psi | 89% | 2802 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 53,534 psi | 88% | 2802 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 53,606 psi | 88% | 2743 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 52,562 psi | 86% | 2726 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 53,113 psi | 87% | 2657 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,476 psi | 89% | 2917 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,565 psi | 62% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 51,895 psi | 85% | 2667 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 52,098 psi | 86% | 2671 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,433 psi | 89% | 2726 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 90% | 52,185 psi | 86% | 2789 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,803 psi | 75% | 2720 fps | 99.1% |
| Lovex S070 | <<locked>> | 82% | 53,911 psi | 89% | 2694 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 52,518 psi | 86% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 82% | 52,562 psi | 86% | 2720 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 46,224 psi | 76% | 2743 fps | 100% |
| Norma MRP | <<locked>> | 88% | 54,186 psi | 89% | 2818 fps | 100% |
| Norma URP | <<locked>> | 82% | 53,592 psi | 88% | 2710 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 52,852 psi | 87% | 2808 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 52,460 psi | 86% | 2720 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 51,068 psi | 84% | 2740 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 63% | 1755 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 53,737 psi | 88% | 2779 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,737 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,085 psi | 89% | 2874 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 53,374 psi | 88% | 2710 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 86% | 51,808 psi | 85% | 2723 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 82% | 53,911 psi | 89% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,476 psi | 89% | 2648 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,940 psi | 90% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 54,549 psi | 90% | 2703 fps | 99.4% |
| Somchem S365 | <<locked>> | 84% | 54,621 psi | 90% | 2713 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 52,141 psi | 86% | 2694 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 51,880 psi | 85% | 2680 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 53,940 psi | 89% | 2749 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 82% | 54,447 psi | 89% | 2707 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,549 psi | 90% | 2743 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 53,838 psi | 88% | 2822 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 54,201 psi | 89% | 2812 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 98% | 54,882 psi | 90% | 2874 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 98% | 52,054 psi | 85% | 2871 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,418 psi | 89% | 2654 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,665 psi | 90% | 2851 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 51,750 psi | 85% | 2690 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% | 39,001 psi | 64% | 2457 fps | 99.7% |
| Accurate High Country | <<locked>> | 80% | 42,424 psi | 70% | 2628 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 80% | 40,001 psi | 66% | 2569 fps | 96.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,931 psi | 70% | 2575 fps | 99% |
| ADI AR 2213 | <<locked>> | 80% | 38,377 psi | 63% | 2516 fps | 97% |
| ADI AR 2217 | <<locked>> | 84% | 32,692 psi | 54% | 2382 fps | 95% |
| ADI AR 2218 | <<locked>> | 98% | 45,005 psi | 74% | 2740 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 82% | 27,920 psi | 46% | 2300 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,381 psi | 71% | 2579 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,588 psi | 81% | 2680 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,975 psi | 71% | 2572 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,870 psi | 64% | 2526 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,652 psi | 62% | 2477 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,489 psi | 53% | 2411 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,829 psi | 69% | 2628 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 45,208 psi | 74% | 2733 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 42,975 psi | 71% | 2552 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 36,303 psi | 60% | 2470 fps | 97.5% |
| Bofors RP30 | <<locked>> | 82% | 32,155 psi | 53% | 2402 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 38,870 psi | 64% | 2526 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 80% | 31,125 psi | 51% | 2343 fps | 95% |
| Hodgdon H4831 | <<locked>> | 80% | 41,002 psi | 67% | 2523 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,205 psi | 66% | 2503 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,615 psi | 77% | 2562 fps | 100% |
| Hodgdon Retumbo | 67.5 gr | 80% | 31,821 psi | 52% | 2441 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 46% | 1529 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,660 psi | 80% | 2615 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 48,979 psi | 80% | 2621 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,337 psi | 70% | 2513 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 80% | 37,130 psi | 61% | 2500 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,735 psi | 54% | 2438 fps | 95.3% |
| Lovex S070 | <<locked>> | 80% | 50,749 psi | 83% | 2644 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,750 psi | 55% | 2346 fps | 98.9% |
| Norma 204 | <<locked>> | 80% | 49,211 psi | 81% | 2664 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 28,776 psi | 47% | 2352 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 40,988 psi | 67% | 2595 fps | 99.6% |
| Norma URP | <<locked>> | 80% | 50,357 psi | 83% | 2661 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,753 psi | 60% | 2507 fps | 97% |
| Ramshot Hunter | <<locked>> | 80% | 49,168 psi | 81% | 2667 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,866 psi | 54% | 2395 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 47% | 1565 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,995 psi | 82% | 2723 fps | 100% |
| ReloadSwiss RS 76 | 72.2 gr | 80% | 30,763 psi | 51% | 2415 fps | 97.5% |
| ReloadSwiss RS 80 | 80.1 gr | 88% | 37,173 psi | 61% | 2559 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 44,193 psi | 73% | 2556 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 80% | 42,496 psi | 70% | 2562 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 50,749 psi | 83% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,097 psi | 84% | 2598 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,163 psi | 69% | 2556 fps | 99% |
| Somchem S361 | <<locked>> | 80% | 44,889 psi | 74% | 2546 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 47,688 psi | 78% | 2615 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,917 psi | 70% | 2539 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 80% | 37,405 psi | 61% | 2425 fps | 98.3% |
| Vihtavuori N170 | <<locked>> | 94% | 50,531 psi | 83% | 2694 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 51,082 psi | 84% | 2657 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,105 psi | 69% | 2549 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,872 psi | 67% | 2585 fps | 97.2% |
| Vihtavuori N565 | <<locked>> | 80% | 33,750 psi | 55% | 2415 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 88% | 38,566 psi | 63% | 2572 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 94% | 45,165 psi | 74% | 2743 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,836 psi | 83% | 2608 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,635 psi | 57% | 2523 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,320 psi | 65% | 2470 fps | 98.3% |
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 .310 | 215gr | Rhino Solid Shank. Hodgdon Retumbo delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,917 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 215.0 gr projectile in 0.31" calls for a 1:12.5 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 .310 | 215gr | Rhino Solid Shank 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.