Load Specifications
Load data in caliber 6.5 x 57 with .264 | 155gr | Sierra HPBT LR MatchKing bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 50,473 psi | 89% | 2546 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 49,313 psi | 87% | 2536 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 48,095 psi | 85% | 2621 fps | 97.4% |
| Accurate MAGPRO | <<locked>> | 94% | 49,008 psi | 87% | 2625 fps | 96.2% |
| ADI AR 2209 | <<locked>> | 92% | 49,850 psi | 88% | 2575 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 96% | 50,821 psi | 90% | 2625 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,637 psi | 67% | 2434 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 50,067 psi | 89% | 2589 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 50,879 psi | 90% | 2602 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 49,632 psi | 88% | 2569 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 50,198 psi | 89% | 2625 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 47,790 psi | 84% | 2562 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,108 psi | 83% | 2605 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 50,720 psi | 90% | 2687 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 49,472 psi | 87% | 2612 fps | 98.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,134 psi | 76% | 2536 fps | 96.5% |
| Bofors RP5 | <<locked>> | 96% | 50,198 psi | 89% | 2625 fps | 98.7% |
| Bofors RP7 | <<locked>> | 84% | 49,487 psi | 87% | 2487 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,847 psi | 83% | 2552 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 84% | 48,037 psi | 85% | 2533 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 84% | 50,778 psi | 90% | 2543 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 92% | 47,935 psi | 85% | 2523 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,212 psi | 89% | 2559 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 50,502 psi | 89% | 2523 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,369 psi | 82% | 2651 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 50,647 psi | 90% | 2612 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 65% | 1585 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 50,546 psi | 89% | 2523 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 84% | 51,068 psi | 90% | 2513 fps | 99.4% |
| IMR 4831 | <<locked>> | 88% | 49,951 psi | 88% | 2533 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,516 psi | 88% | 2513 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 96% | 48,646 psi | 86% | 2598 fps | 97.2% |
| Lovex S065 | <<locked>> | 86% | 51,140 psi | 90% | 2510 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 49,356 psi | 87% | 2503 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,109 psi | 85% | 2510 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 50,734 psi | 90% | 2566 fps | 98.4% |
| Norma MRP | <<locked>> | 94% | 49,951 psi | 88% | 2648 fps | 99.5% |
| Norma URP | <<locked>> | 86% | 48,240 psi | 85% | 2523 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 48,936 psi | 87% | 2618 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 88% | 50,053 psi | 88% | 2572 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,299 psi | 89% | 2615 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,594 psi | 66% | 1627 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 50,444 psi | 89% | 2595 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 49,066 psi | 87% | 2559 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 50,560 psi | 89% | 2628 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,180 psi | 82% | 2644 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 82% | 50,343 psi | 89% | 2497 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,515 psi | 86% | 2503 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 92% | 48,718 psi | 86% | 2552 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 84% | 49,487 psi | 87% | 2487 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 86% | 51,140 psi | 90% | 2510 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 49,356 psi | 87% | 2503 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 50,981 psi | 90% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 50,807 psi | 90% | 2470 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 48,283 psi | 85% | 2549 fps | 98.3% |
| Somchem S355 | <<locked>> | 82% | 50,198 psi | 89% | 2490 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,690 psi | 88% | 2497 fps | 96.6% |
| Somchem S365 | <<locked>> | 90% | 51,068 psi | 90% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 49,530 psi | 88% | 2536 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 84% | 51,169 psi | 90% | 2467 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 50,125 psi | 89% | 2520 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 48,631 psi | 86% | 2513 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 86% | 49,284 psi | 87% | 2523 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 50,415 psi | 89% | 2589 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 50,241 psi | 89% | 2641 fps | 97.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,124 psi | 87% | 2615 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 49,255 psi | 87% | 2487 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 48,037 psi | 85% | 2533 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,270 psi | 89% | 2726 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 49,052 psi | 87% | 2530 fps | 98.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 29,559 psi | 52% | 2149 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 40,059 psi | 71% | 2382 fps | 99.6% |
| Accurate High Country | 44.8 gr | 88% | 42,003 psi | 74% | 2510 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 92% | 45,513 psi | 80% | 2562 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 84% | 38,696 psi | 68% | 2372 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 41,901 psi | 74% | 2461 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 33,156 psi | 59% | 2323 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,769 psi | 69% | 2392 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,077 psi | 78% | 2500 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,464 psi | 68% | 2365 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,172 psi | 64% | 2359 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,645 psi | 51% | 2182 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,601 psi | 51% | 2192 fps | 95.2% |
| Alliant Reloder-26 | 42 gr | 80% | 30,690 psi | 54% | 2290 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 38,145 psi | 67% | 2402 fps | 95.6% |
| Bofors RP30 | <<locked>> | 98% | 40,306 psi | 71% | 2480 fps | 95.6% |
| Bofors RP5 | <<locked>> | 86% | 36,172 psi | 64% | 2359 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 43,729 psi | 77% | 2392 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 96% | 40,915 psi | 72% | 2441 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 41,800 psi | 74% | 2425 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 44,904 psi | 79% | 2444 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 44,817 psi | 79% | 2467 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,903 psi | 78% | 2454 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,564 psi | 65% | 2293 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,752 psi | 63% | 2415 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 40,843 psi | 72% | 2444 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 49% | 1417 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,291 psi | 69% | 2326 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,252 psi | 80% | 2418 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 38,522 psi | 68% | 2339 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,859 psi | 78% | 2418 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 42,815 psi | 76% | 2493 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 42,757 psi | 76% | 2372 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 40,959 psi | 72% | 2359 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 29,138 psi | 52% | 2139 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 38,841 psi | 69% | 2352 fps | 95.6% |
| Norma MRP | <<locked>> | 82% | 32,924 psi | 58% | 2313 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 39,711 psi | 70% | 2375 fps | 99.5% |
| Ramshot Grand | 46.4 gr | 92% | 42,322 psi | 75% | 2497 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 38,493 psi | 68% | 2369 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 35,041 psi | 62% | 2329 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 50% | 1450 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,775 psi | 83% | 2539 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,871 psi | 70% | 2402 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,493 psi | 68% | 2411 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,983 psi | 62% | 2402 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,094 psi | 83% | 2451 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,830 psi | 76% | 2405 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 37,637 psi | 67% | 2352 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 43,729 psi | 77% | 2392 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,757 psi | 76% | 2372 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 40,959 psi | 72% | 2359 fps | 98.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,022 psi | 85% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,713 psi | 74% | 2323 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,289 psi | 66% | 2346 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,326 psi | 84% | 2448 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,511 psi | 77% | 2392 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 36,230 psi | 64% | 2336 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,605 psi | 59% | 2238 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 45,150 psi | 80% | 2382 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,046 psi | 73% | 2372 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 35,273 psi | 62% | 2270 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 40,567 psi | 72% | 2375 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,908 psi | 56% | 2251 fps | 98.5% |
| Vihtavuori N560 | <<locked>> | 90% | 43,714 psi | 77% | 2523 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 42,917 psi | 76% | 2503 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,030 psi | 71% | 2343 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,076 psi | 74% | 2428 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,295 psi | 45% | 2172 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,289 psi | 66% | 2316 fps | 95.3% |
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 76 powders for 6.5 x 57 loaded with the .264 | 155gr | Sierra HPBT LR MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,726 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 155.0 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 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. Alliant Reloder-26, Accurate High Country, Ramshot Grand rank at the top here: for 6.5 x 57 with the .264 | 155gr | Sierra HPBT LR MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, Norma 217 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.