Load Specifications
Load data in caliber 6.5 x 72 R with .264 | 124gr | Apex Outdoors Afterburner bullet and 27 powders. The key underlying parameters are shown in the table above.
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% | 40,843 psi | 85% | 2618 fps | 96% |
| Accurate 4350 | <<locked>> | 88% | 43,062 psi | 90% | 2680 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 41,771 psi | 87% | 2684 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 84% | 41,539 psi | 87% | 2700 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 41,205 psi | 86% | 2697 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,960 psi | 90% | 2795 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 41,263 psi | 86% | 2625 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,129 psi | 75% | 1742 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 41,104 psi | 86% | 2628 fps | 97.9% |
| Lovex S065 | <<locked>> | 84% | 41,205 psi | 86% | 2569 fps | 96.5% |
| Norma URP | <<locked>> | 88% | 42,438 psi | 89% | 2667 fps | 98% |
| Ramshot Hunter | <<locked>> | 88% | 41,249 psi | 86% | 2651 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 77% | 1785 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 41,278 psi | 86% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 42,511 psi | 89% | 2694 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 41,771 psi | 87% | 2703 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 42,235 psi | 88% | 2615 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,205 psi | 86% | 2569 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 43,062 psi | 90% | 2664 fps | 99.1% |
| Somchem S355 | <<locked>> | 82% | 42,815 psi | 89% | 2618 fps | 99.4% |
| Somchem S365 | <<locked>> | 90% | 40,901 psi | 85% | 2680 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 43,279 psi | 90% | 2598 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 86% | 41,481 psi | 87% | 2615 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 86% | 40,901 psi | 85% | 2618 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 96% | 42,960 psi | 90% | 2723 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 40,930 psi | 86% | 2589 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,421 psi | 82% | 2772 fps | 99.8% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 38,087 psi | 80% | 2559 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 32,692 psi | 68% | 2451 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,750 psi | 68% | 2464 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,347 psi | 76% | 2585 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,574 psi | 64% | 2434 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,940 psi | 73% | 2602 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,182 psi | 63% | 2365 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 57% | 1558 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 33,750 psi | 71% | 2461 fps | 95.6% |
| Lovex S065 | <<locked>> | 82% | 38,885 psi | 81% | 2520 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,793 psi | 69% | 2451 fps | 95% |
| Ramshot Hunter | <<locked>> | 86% | 38,638 psi | 81% | 2595 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,369 psi | 57% | 1594 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,609 psi | 81% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,679 psi | 72% | 2523 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 36,695 psi | 77% | 2582 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 39,494 psi | 83% | 2559 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,885 psi | 81% | 2520 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,292 psi | 84% | 2608 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 40,089 psi | 84% | 2562 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,530 psi | 62% | 2405 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 38,116 psi | 80% | 2497 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 34,040 psi | 71% | 2451 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 33,808 psi | 71% | 2457 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 31,096 psi | 65% | 2454 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,823 psi | 71% | 2431 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,805 psi | 60% | 2454 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 27 powders for 6.5 x 72 R loaded with the .264 | 124gr | Apex Outdoors Afterburner. Alliant Reloder-26 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,742 fps to 2,795 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 27 of the 27 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 124.0 gr projectile in 0.264" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Winchester StaBALL HD 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.