Load Specifications
Load data in caliber 6.5 Weatherby RPM with .264 | 143gr | Norma Bondstrike bullet and 74 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 Vihtavuori N560.
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% | 55,535 psi | 85% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 56,478 psi | 87% | 2910 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 57,450 psi | 88% | 3054 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 90% | 58,146 psi | 89% | 3058 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 88% | 57,246 psi | 88% | 2982 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 55,259 psi | 85% | 2995 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 57,188 psi | 88% | 3022 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,647 psi | 76% | 2995 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,576 psi | 79% | 2986 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 57,392 psi | 88% | 2976 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 57,392 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 57,348 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 56,724 psi | 87% | 2969 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,622 psi | 86% | 2989 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 57,130 psi | 88% | 2946 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,985 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,914 psi | 89% | 3045 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,331 psi | 84% | 3051 fps | 97.9% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,985 psi | 86% | 2953 fps | 98.2% |
| Bofors RP15 | <<locked>> | 94% | 58,392 psi | 90% | 3031 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 56,739 psi | 87% | 3035 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 55,622 psi | 86% | 2989 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 57,566 psi | 89% | 2907 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 58,813 psi | 90% | 3041 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 57,740 psi | 89% | 2969 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 58,595 psi | 90% | 2986 fps | 99.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 57,421 psi | 88% | 2969 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 57,667 psi | 89% | 2884 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,898 psi | 86% | 3110 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 58,436 psi | 90% | 3005 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 58% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,173 psi | 86% | 2900 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,550 psi | 87% | 2900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,521 psi | 85% | 2907 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 92% | 57,174 psi | 88% | 3035 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 47,210 psi | 73% | 2900 fps | 99.1% |
| Lovex S065 | <<locked>> | 82% | 56,565 psi | 87% | 2874 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 58,436 psi | 90% | 2927 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 57,203 psi | 88% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 84% | 57,203 psi | 88% | 2956 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,790 psi | 74% | 2923 fps | 100% |
| Norma MRP | <<locked>> | 88% | 55,709 psi | 86% | 3009 fps | 100% |
| Norma URP | <<locked>> | 84% | 58,262 psi | 90% | 2943 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 58,421 psi | 90% | 3054 fps | 100% |
| Ramshot Hunter | <<locked>> | 84% | 57,029 psi | 88% | 2953 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 56,768 psi | 87% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,537 psi | 59% | 1886 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,507 psi | 87% | 2936 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,781 psi | 84% | 2963 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 56,811 psi | 87% | 3104 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,999 psi | 86% | 3064 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 57,769 psi | 89% | 2946 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 56,304 psi | 87% | 2959 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 57,566 psi | 89% | 2907 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,565 psi | 87% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 58,436 psi | 90% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,506 psi | 85% | 2828 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,898 psi | 86% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,680 psi | 86% | 2884 fps | 99.4% |
| Somchem S365 | <<locked>> | 84% | 55,709 psi | 86% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,710 psi | 87% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 56,275 psi | 87% | 2884 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,594 psi | 87% | 2913 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 55,477 psi | 85% | 2933 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 82% | 55,492 psi | 85% | 2890 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,593 psi | 86% | 2923 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 55,288 psi | 85% | 3009 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 55,535 psi | 85% | 2995 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 56,608 psi | 87% | 3064 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 57,841 psi | 89% | 3127 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,361 psi | 85% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 58,001 psi | 89% | 2972 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 56,449 psi | 87% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,579 psi | 87% | 2927 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% | 39,798 psi | 61% | 2621 fps | 99.7% |
| Accurate 4350 | <<locked>> | 80% | 52,678 psi | 81% | 2854 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 43,308 psi | 67% | 2802 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 80% | 41,002 psi | 63% | 2740 fps | 96.3% |
| ADI AR 2209 | <<locked>> | 80% | 43,758 psi | 67% | 2746 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 80% | 39,204 psi | 60% | 2687 fps | 96.9% |
| ADI AR 2217 | <<locked>> | 84% | 33,388 psi | 51% | 2543 fps | 95% |
| ADI AR 2218 | <<locked>> | 98% | 46,238 psi | 71% | 2923 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 82% | 28,529 psi | 44% | 2451 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,179 psi | 68% | 2749 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,179 psi | 68% | 2749 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,372 psi | 77% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,772 psi | 67% | 2743 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,769 psi | 61% | 2694 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,435 psi | 59% | 2641 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,214 psi | 51% | 2572 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,946 psi | 66% | 2802 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 43,584 psi | 67% | 2851 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 43,787 psi | 67% | 2720 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 36,956 psi | 57% | 2631 fps | 97.4% |
| Bofors RP30 | <<locked>> | 82% | 32,982 psi | 51% | 2562 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 39,769 psi | 61% | 2694 fps | 98.3% |
| Bofors RP7 | <<locked>> | 80% | 54,128 psi | 83% | 2851 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 33,924 psi | 52% | 2559 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 53,983 psi | 83% | 2910 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,655 psi | 64% | 2687 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,017 psi | 63% | 2674 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,558 psi | 73% | 2736 fps | 100% |
| Hodgdon Retumbo | 54 gr | 80% | 32,445 psi | 50% | 2602 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 80% | 54,563 psi | 84% | 2949 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,166 psi | 43% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,472 psi | 76% | 2792 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 49,893 psi | 77% | 2799 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,062 psi | 66% | 2680 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 80% | 37,797 psi | 58% | 2664 fps | 96.5% |
| IMR 8133 Enduron | <<locked>> | 90% | 33,649 psi | 52% | 2602 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 52,968 psi | 81% | 2822 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,459 psi | 79% | 2822 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,374 psi | 53% | 2500 fps | 98.8% |
| Norma 204 | <<locked>> | 80% | 50,198 psi | 77% | 2844 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 29,617 psi | 46% | 2510 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 41,858 psi | 64% | 2766 fps | 99.5% |
| Norma URP | <<locked>> | 80% | 51,140 psi | 79% | 2838 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,681 psi | 58% | 2674 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 80% | 50,154 psi | 77% | 2844 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,721 psi | 52% | 2556 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 44% | 1683 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,794 psi | 81% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,039 psi | 79% | 2904 fps | 100% |
| ReloadSwiss RS 76 | 57.8 gr | 80% | 31,517 psi | 48% | 2575 fps | 97.4% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 38,334 psi | 59% | 2730 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 44,976 psi | 69% | 2726 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 80% | 43,279 psi | 67% | 2733 fps | 99% |
| Rottweil R 907 | <<locked>> | 80% | 54,128 psi | 83% | 2851 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,968 psi | 81% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,459 psi | 79% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,866 psi | 80% | 2772 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,946 psi | 66% | 2726 fps | 98.9% |
| Somchem S361 | <<locked>> | 80% | 45,643 psi | 70% | 2713 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 48,675 psi | 75% | 2792 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,787 psi | 67% | 2710 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 52,620 psi | 81% | 2828 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 38,101 psi | 59% | 2585 fps | 98.3% |
| Vihtavuori N170 | <<locked>> | 94% | 51,880 psi | 80% | 2871 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 51,967 psi | 80% | 2835 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,018 psi | 66% | 2717 fps | 100% |
| Vihtavuori N560 | 56 gr | 80% | 41,742 psi | 64% | 2756 fps | 97.2% |
| Vihtavuori N565 | <<locked>> | 80% | 34,621 psi | 53% | 2575 fps | 95% |
| Vihtavuori N568 | <<locked>> | 88% | 39,726 psi | 61% | 2743 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 94% | 46,630 psi | 72% | 2927 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,837 psi | 80% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 54,259 psi | 83% | 2917 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,766 psi | 55% | 2694 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,074 psi | 62% | 2638 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 74 powders for 6.5 Weatherby RPM loaded with the .264 | 143gr | Norma Bondstrike. Vihtavuori N570 delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,127 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 143.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, Vihtavuori N560 rank at the top here: for 6.5 Weatherby RPM with the .264 | 143gr | Norma Bondstrike 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.