Load Specifications
Load data in caliber .26 Nosler with .264 | 139gr | Norma HP bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Alliant Reloder-50 and Norma 217.
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 8700 | <<locked>> | 96% | 55,390 psi | 85% | 3009 fps | 98.2% |
| ADI AR 2217 | <<locked>> | 88% | 57,319 psi | 88% | 3035 fps | 100% |
| ADI AR 2218 | <<locked>> | 92% | 58,276 psi | 90% | 3176 fps | 99.3% |
| ADI AR 2225 | <<locked>> | 90% | 58,262 psi | 90% | 3074 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 84% | 58,073 psi | 89% | 3025 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 88% | 57,566 psi | 89% | 3097 fps | 98.9% |
| Alliant Reloder-50 | <<locked>> | 90% | 56,231 psi | 87% | 3061 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 55,999 psi | 86% | 2982 fps | 98.8% |
| Bofors RP15 | <<locked>> | 82% | 58,233 psi | 90% | 3035 fps | 100% |
| Bofors RP30 | <<locked>> | 86% | 58,769 psi | 90% | 3064 fps | 100% |
| Hodgdon H1000 | <<locked>> | 86% | 58,624 psi | 90% | 3048 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 58,059 psi | 89% | 3130 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,682 psi | 60% | 1955 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 86% | 57,232 psi | 88% | 2943 fps | 96.3% |
| IMR 8133 Enduron | <<locked>> | 92% | 58,160 psi | 89% | 3071 fps | 100% |
| Lovex S071 | <<locked>> | 84% | 58,639 psi | 90% | 2940 fps | 100% |
| Norma 217 | <<locked>> | 90% | 56,840 psi | 87% | 3048 fps | 100% |
| Ramshot Magnum | <<locked>> | 82% | 57,043 psi | 88% | 2986 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 39,943 psi | 61% | 2005 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 55,158 psi | 85% | 3054 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 55,245 psi | 85% | 3038 fps | 99.7% |
| SNPE Vectan SP 13 | <<locked>> | 96% | 57,464 psi | 88% | 3018 fps | 98.2% |
| Vihtavuori 20N29 | <<locked>> | 98% | 55,303 psi | 85% | 3002 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 82% | 58,494 psi | 90% | 2956 fps | 100% |
| Vihtavuori N170 | <<locked>> | 86% | 58,668 psi | 90% | 3009 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 82% | 57,130 psi | 88% | 3018 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 86% | 58,711 psi | 90% | 3094 fps | 99.7% |
| Vihtavuori N570 | <<locked>> | 86% | 56,652 psi | 87% | 3104 fps | 98.5% |
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 8700 | <<locked>> | 88% | 43,221 psi | 66% | 2776 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 80% | 44,976 psi | 69% | 2812 fps | 99.3% |
| ADI AR 2218 | 74.5 gr | 82% | 42,409 psi | 65% | 2844 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 42,946 psi | 66% | 2805 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 51,576 psi | 79% | 2923 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 80% | 44,686 psi | 69% | 2851 fps | 96.2% |
| Alliant Reloder-50 | 75.6 gr | 82% | 44,048 psi | 68% | 2822 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 52,823 psi | 81% | 2927 fps | 98.4% |
| Bofors RP15 | <<locked>> | 80% | 54,940 psi | 85% | 2982 fps | 100% |
| Bofors RP30 | <<locked>> | 80% | 49,342 psi | 76% | 2904 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 80% | 48,472 psi | 75% | 2881 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 80% | 51,227 psi | 79% | 3015 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 29,341 psi | 45% | 1752 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 84% | 54,215 psi | 83% | 2890 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 80% | 41,278 psi | 64% | 2753 fps | 98.5% |
| Lovex S071 | <<locked>> | 80% | 52,663 psi | 81% | 2844 fps | 100% |
| Norma 217 | 67.2 gr | 80% | 42,467 psi | 65% | 2785 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 80% | 53,534 psi | 82% | 2933 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 30,226 psi | 47% | 1795 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 51,677 psi | 80% | 2999 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 80% | 48,646 psi | 75% | 2917 fps | 98.9% |
| SNPE Vectan SP 13 | <<locked>> | 88% | 45,672 psi | 70% | 2799 fps | 95.5% |
| Vihtavuori 20N29 | <<locked>> | 96% | 52,025 psi | 80% | 2943 fps | 95.5% |
| Vihtavuori N165 | <<locked>> | 80% | 55,216 psi | 85% | 2907 fps | 100% |
| Vihtavuori N170 | <<locked>> | 80% | 49,342 psi | 76% | 2838 fps | 96% |
| Vihtavuori N565 | <<locked>> | 80% | 53,983 psi | 83% | 2966 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 80% | 48,950 psi | 75% | 2917 fps | 98.5% |
| Vihtavuori N570 | <<locked>> | 80% | 47,108 psi | 72% | 2917 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 28 powders for .26 Nosler loaded with the .264 | 139gr | Norma HP. ADI AR 2218 delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,955 fps to 3,176 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14 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. ADI AR 2218, Alliant Reloder-50, Norma 217 rank at the top here: for .26 Nosler with the .264 | 139gr | Norma HP 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.