Load Specifications
Load data in caliber .300 Lapua Mag. with .309 | 170gr | Reichenberg HDB Universal bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Bofors RP5, SNPE Vectan Tubal 8000 and Alliant Reloder-26.
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 2700 | <<locked>> | 84% | 54,201 psi | 89% | 2940 fps | 99.3% |
| Accurate 3100 | <<locked>> | 96% | 53,708 psi | 88% | 2947 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 51,692 psi | 85% | 2992 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 53,635 psi | 88% | 2905 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,388 psi | 86% | 2977 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 96% | 53,664 psi | 88% | 3032 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,930 psi | 67% | 2801 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,549 psi | 90% | 2929 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,402 psi | 86% | 2991 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,447 psi | 88% | 3007 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,199 psi | 86% | 2969 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,330 psi | 88% | 3030 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 50,720 psi | 83% | 2960 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,662 psi | 83% | 3005 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,621 psi | 90% | 3102 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,330 psi | 86% | 3074 fps | 98.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,340 psi | 78% | 2925 fps | 96.3% |
| Bofors RP5 | <<locked>> | 96% | 53,330 psi | 88% | 3094 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 54,839 psi | 90% | 2938 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,020 psi | 74% | 2927 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 84% | 54,476 psi | 89% | 3000 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 53,780 psi | 88% | 3018 fps | 99% |
| Hodgdon H4831 | <<locked>> | 98% | 53,069 psi | 87% | 2961 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,852 psi | 87% | 2957 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,924 psi | 87% | 2919 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,776 psi | 78% | 3100 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 53,563 psi | 88% | 3017 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,623 psi | 62% | 1875 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,678 psi | 86% | 2933 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,636 psi | 90% | 2913 fps | 99.4% |
| IMR 4350 | <<locked>> | 88% | 52,576 psi | 86% | 2976 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 51,938 psi | 85% | 2953 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 53,301 psi | 88% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,172 psi | 89% | 3012 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 94% | 51,663 psi | 85% | 3008 fps | 97% |
| Lovex S065 | <<locked>> | 86% | 53,272 psi | 87% | 2907 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 54,636 psi | 90% | 2951 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,445 psi | 84% | 2904 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 53,258 psi | 87% | 2966 fps | 98.1% |
| Norma MRP | <<locked>> | 94% | 53,069 psi | 87% | 3055 fps | 99.4% |
| Norma URP | <<locked>> | 88% | 53,751 psi | 88% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 51,271 psi | 84% | 3013 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 88% | 52,649 psi | 86% | 2972 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 96% | 52,054 psi | 85% | 2994 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,653 psi | 63% | 1917 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,924 psi | 87% | 3000 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 51,561 psi | 85% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,476 psi | 88% | 3038 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,472 psi | 81% | 3051 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 82% | 52,286 psi | 86% | 2891 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,012 psi | 89% | 2951 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 94% | 54,911 psi | 90% | 3012 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 54,839 psi | 90% | 2938 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,272 psi | 87% | 2907 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 53,388 psi | 88% | 2992 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,737 psi | 88% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,808 psi | 87% | 2774 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,547 psi | 86% | 2855 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,214 psi | 87% | 3054 fps | 98.9% |
| Somchem S355 | <<locked>> | 82% | 52,272 psi | 86% | 2886 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,083 psi | 86% | 2885 fps | 96.3% |
| Somchem S365 | <<locked>> | 90% | 53,766 psi | 88% | 2977 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,069 psi | 85% | 2931 fps | 98.8% |
| Unknown powder | <<locked>> | 86% | 54,244 psi | 89% | 2976 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,940 psi | 89% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,404 psi | 89% | 2942 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,953 psi | 87% | 2931 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 86% | 54,998 psi | 90% | 2991 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,185 psi | 87% | 2990 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,606 psi | 88% | 3055 fps | 97% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,882 psi | 88% | 3013 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,590 psi | 85% | 2873 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,476 psi | 89% | 3000 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 51,779 psi | 85% | 3086 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,345 psi | 88% | 2947 fps | 98.3% |
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 2700 | <<locked>> | 80% | 47,543 psi | 78% | 2828 fps | 98.4% |
| Accurate 3100 | <<locked>> | 82% | 33,373 psi | 55% | 2541 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 42,032 psi | 69% | 2815 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,256 psi | 83% | 2850 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 43,047 psi | 71% | 2796 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 92% | 46,978 psi | 77% | 2905 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 37,942 psi | 62% | 2739 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,314 psi | 84% | 2876 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,437 psi | 66% | 2763 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,296 psi | 76% | 2889 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,147 psi | 66% | 2729 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,712 psi | 67% | 2783 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,878 psi | 49% | 2509 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,865 psi | 52% | 2583 fps | 95.4% |
| Alliant Reloder-26 | 71.4 gr | 80% | 32,343 psi | 53% | 2633 fps | 96.5% |
| Bofors RP15 | <<locked>> | 88% | 37,681 psi | 62% | 2776 fps | 95% |
| Bofors RP30 | <<locked>> | 98% | 43,004 psi | 71% | 2862 fps | 95.3% |
| Bofors RP5 | 72.1 gr | 86% | 38,029 psi | 62% | 2785 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 45,382 psi | 75% | 2765 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 98% | 41,930 psi | 69% | 2861 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 47,529 psi | 78% | 2878 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 41,626 psi | 68% | 2785 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 96% | 49,734 psi | 82% | 2902 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,327 psi | 81% | 2895 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,985 psi | 62% | 2648 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,637 psi | 60% | 2831 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 42,888 psi | 70% | 2817 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 45% | 1676 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,472 psi | 81% | 2881 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,370 psi | 79% | 2802 fps | 98.6% |
| IMR 4350 | <<locked>> | 80% | 40,799 psi | 67% | 2746 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,730 psi | 75% | 2838 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 36,492 psi | 60% | 2621 fps | 98.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,672 psi | 73% | 2835 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 90% | 45,005 psi | 74% | 2878 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 44,179 psi | 73% | 2742 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 42,569 psi | 70% | 2726 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 32,576 psi | 53% | 2519 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 40,654 psi | 67% | 2721 fps | 95% |
| Norma MRP | <<locked>> | 84% | 37,173 psi | 61% | 2729 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 41,481 psi | 68% | 2747 fps | 99.2% |
| Ramshot Grand | <<locked>> | 88% | 44,106 psi | 72% | 2871 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 40,321 psi | 66% | 2734 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 88% | 38,276 psi | 63% | 2716 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 46% | 1715 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,124 psi | 81% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,916 psi | 69% | 2774 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,219 psi | 66% | 2783 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,217 psi | 61% | 2766 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 49,081 psi | 81% | 2839 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,585 psi | 73% | 2776 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 39,407 psi | 65% | 2712 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,382 psi | 75% | 2765 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,179 psi | 73% | 2742 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 80% | 41,379 psi | 68% | 2769 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,343 psi | 83% | 2893 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,588 psi | 81% | 2728 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,265 psi | 71% | 2686 fps | 97.7% |
| SNPE Vectan Tubal 8000 | 69.2 gr | 84% | 37,855 psi | 62% | 2746 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,921 psi | 80% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,689 psi | 80% | 2822 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 38,072 psi | 63% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,449 psi | 61% | 2639 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 44,469 psi | 73% | 2803 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 42,047 psi | 69% | 2673 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,686 psi | 73% | 2777 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 88% | 38,189 psi | 63% | 2647 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 45,165 psi | 74% | 2817 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,446 psi | 55% | 2592 fps | 97.9% |
| Vihtavuori N560 | <<locked>> | 92% | 46,789 psi | 77% | 2927 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 45,774 psi | 75% | 2889 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,814 psi | 69% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,529 psi | 78% | 2878 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,571 psi | 44% | 2495 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 40,045 psi | 66% | 2694 fps | 95% |
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 75 powders for .300 Lapua Mag. loaded with the .309 | 170gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 3,102 fps; across all powders the maximum-charge window runs from 1,875 fps to 3,102 fps. ADI AR 2225 gives the best case fill at 100 %, and 75 of the 75 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 170.0 gr projectile in 0.309" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP30 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. Bofors RP5, SNPE Vectan Tubal 8000, Alliant Reloder-26 rank at the top here: for .300 Lapua Mag. with the .309 | 170gr | Reichenberg HDB Universal 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.