Load Specifications
Load data in caliber 6.5-06 A-Square with .264 | 159gr | RWS TMR bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Accurate MAGPRO and Ramshot Grand.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 57,217 psi | 88% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 58,769 psi | 90% | 2687 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 55,883 psi | 86% | 2762 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 55,651 psi | 86% | 2700 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 94% | 57,014 psi | 88% | 2759 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,111 psi | 79% | 2667 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,585 psi | 70% | 2635 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,898 psi | 86% | 2690 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,942 psi | 88% | 2700 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 58,755 psi | 90% | 2740 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,072 psi | 88% | 2753 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 58,508 psi | 90% | 2717 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,638 psi | 89% | 2779 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,042 psi | 85% | 2756 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,233 psi | 90% | 2720 fps | 97.6% |
| Bofors RP15 | <<locked>> | 96% | 56,231 psi | 87% | 2740 fps | 99.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,548 psi | 82% | 2733 fps | 99.5% |
| Bofors RP5 | <<locked>> | 94% | 57,072 psi | 88% | 2753 fps | 99.9% |
| Bofors RP7 | <<locked>> | 84% | 56,826 psi | 87% | 2635 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,449 psi | 87% | 2749 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 84% | 56,507 psi | 87% | 2690 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,405 psi | 85% | 2648 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 56,898 psi | 88% | 2700 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,593 psi | 86% | 2680 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,144 psi | 86% | 2618 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,463 psi | 87% | 2854 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,797 psi | 87% | 2726 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,333 psi | 57% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 58,523 psi | 90% | 2674 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,189 psi | 90% | 2654 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,085 psi | 85% | 2628 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,740 psi | 89% | 2680 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 94% | 54,766 psi | 84% | 2736 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,263 psi | 63% | 2546 fps | 97.1% |
| Lovex S065 | <<locked>> | 84% | 55,666 psi | 86% | 2608 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,188 psi | 88% | 2654 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 58,218 psi | 90% | 2677 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,144 psi | 86% | 2680 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 41,495 psi | 64% | 2572 fps | 99.1% |
| Norma MRP | <<locked>> | 92% | 57,174 psi | 88% | 2772 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,739 psi | 87% | 2667 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,753 psi | 86% | 2759 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 86% | 55,782 psi | 86% | 2680 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,117 psi | 89% | 2753 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,276 psi | 59% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 58,639 psi | 90% | 2713 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,101 psi | 88% | 2743 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,537 psi | 89% | 2858 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,301 psi | 80% | 2756 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 82% | 58,595 psi | 90% | 2631 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,579 psi | 87% | 2667 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 92% | 58,378 psi | 90% | 2730 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 56,826 psi | 87% | 2635 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,666 psi | 86% | 2608 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,188 psi | 88% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,827 psi | 89% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,407 psi | 90% | 2615 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,943 psi | 89% | 2726 fps | 99.9% |
| Somchem S355 | <<locked>> | 82% | 58,102 psi | 89% | 2621 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,160 psi | 89% | 2664 fps | 99.1% |
| Somchem S365 | <<locked>> | 88% | 57,435 psi | 88% | 2671 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 58,595 psi | 90% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 55,738 psi | 86% | 2552 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 58,740 psi | 90% | 2661 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 58,436 psi | 90% | 2684 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 57,638 psi | 89% | 2667 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,217 psi | 88% | 2697 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,927 psi | 88% | 2776 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 98% | 56,594 psi | 87% | 2756 fps | 99.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,258 psi | 82% | 2753 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,073 psi | 89% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,507 psi | 87% | 2690 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,449 psi | 87% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 58,610 psi | 90% | 2697 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 35,853 psi | 55% | 2310 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 47,848 psi | 74% | 2536 fps | 100% |
| Accurate MAGPRO | 50.8 gr | 84% | 42,134 psi | 65% | 2526 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 39,929 psi | 61% | 2428 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 38,116 psi | 59% | 2421 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 90% | 36,782 psi | 57% | 2392 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 86% | 29,124 psi | 45% | 2244 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,050 psi | 71% | 2543 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,113 psi | 82% | 2648 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,856 psi | 61% | 2421 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,737 psi | 55% | 2372 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,650 psi | 53% | 2339 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,008 psi | 46% | 2260 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,985 psi | 58% | 2474 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 48,443 psi | 75% | 2562 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 33,272 psi | 51% | 2313 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 35,824 psi | 55% | 2408 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 35,737 psi | 55% | 2372 fps | 96.3% |
| Bofors RP7 | <<locked>> | 80% | 50,285 psi | 77% | 2536 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 35,027 psi | 54% | 2352 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 49,385 psi | 76% | 2585 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 51,808 psi | 80% | 2595 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 82% | 40,640 psi | 63% | 2425 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 39,958 psi | 61% | 2411 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,468 psi | 67% | 2434 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 33,402 psi | 51% | 2392 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 49,182 psi | 76% | 2615 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 43% | 1463 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,716 psi | 70% | 2477 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,619 psi | 79% | 2559 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 45,411 psi | 70% | 2484 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,711 psi | 61% | 2372 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 82% | 36,738 psi | 57% | 2402 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 36,289 psi | 56% | 2438 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 49,356 psi | 76% | 2513 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,442 psi | 73% | 2507 fps | 99.8% |
| Lovex S071 | <<locked>> | 80% | 31,096 psi | 48% | 2201 fps | 97.2% |
| Norma 204 | <<locked>> | 80% | 45,759 psi | 70% | 2516 fps | 98.6% |
| Norma 217 | <<locked>> | 92% | 31,865 psi | 49% | 2352 fps | 96% |
| Norma MRP | <<locked>> | 80% | 37,434 psi | 58% | 2434 fps | 98.2% |
| Norma URP | <<locked>> | 80% | 46,789 psi | 72% | 2523 fps | 100% |
| Ramshot Grand | 48.3 gr | 82% | 36,230 psi | 56% | 2405 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 45,643 psi | 70% | 2526 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 32,387 psi | 50% | 2297 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 44% | 1499 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,819 psi | 74% | 2559 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,948 psi | 71% | 2575 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 30,168 psi | 46% | 2306 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,814 psi | 64% | 2569 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 54,781 psi | 84% | 2582 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 41,249 psi | 63% | 2408 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 39,349 psi | 61% | 2411 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 80% | 50,285 psi | 77% | 2536 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,356 psi | 76% | 2513 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,442 psi | 73% | 2507 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,665 psi | 84% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,008 psi | 74% | 2467 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,015 psi | 60% | 2408 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 54,679 psi | 84% | 2579 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,843 psi | 64% | 2398 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 44,077 psi | 68% | 2484 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,798 psi | 61% | 2395 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 80% | 52,083 psi | 80% | 2503 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,196 psi | 74% | 2516 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,534 psi | 53% | 2280 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 80% | 47,529 psi | 73% | 2520 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,870 psi | 60% | 2408 fps | 100% |
| Vihtavuori N560 | 48.7 gr | 82% | 40,263 psi | 62% | 2484 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 86% | 37,869 psi | 58% | 2425 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 94% | 43,091 psi | 66% | 2575 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,282 psi | 73% | 2480 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,676 psi | 76% | 2589 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,676 psi | 47% | 2365 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,448 psi | 56% | 2326 fps | 96.4% |
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 74 powders for 6.5-06 A-Square loaded with the .264 | 159gr | RWS TMR. ReloadSwiss RS 76 delivers the highest muzzle velocity at 2,858 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,858 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 57–90 %, leaving at least 10 % headroom. The 159.0 gr projectile in 0.264" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Accurate MAGPRO, Ramshot Grand rank at the top here: for 6.5-06 A-Square with the .264 | 159gr | RWS TMR 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.