Load Specifications
Load data in caliber .27 Nosler with .277 | 156gr | Sako Hammerhead bullet and 52 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 80 and Vihtavuori N570.
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>> | 88% | 57,928 psi | 89% | 2917 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 57,740 psi | 89% | 3031 fps | 99% |
| ADI AR 2209 | <<locked>> | 84% | 55,376 psi | 85% | 2946 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 57,609 psi | 89% | 3022 fps | 99.8% |
| ADI AR 2217 | <<locked>> | 96% | 56,231 psi | 87% | 2995 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 56,666 psi | 87% | 3117 fps | 98.3% |
| ADI AR 2225 | <<locked>> | 98% | 55,158 psi | 85% | 3018 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 58,508 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 58,044 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 56,173 psi | 86% | 2920 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 56,405 psi | 87% | 2992 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 56,782 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 58,465 psi | 90% | 3094 fps | 98.4% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 54,012 psi | 83% | 3012 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,986 psi | 89% | 2982 fps | 98.4% |
| Bofors RP15 | <<locked>> | 90% | 57,217 psi | 88% | 3002 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 56,173 psi | 86% | 3009 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 58,044 psi | 89% | 3015 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 57,899 psi | 89% | 3022 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 56,623 psi | 87% | 2953 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 86% | 55,521 psi | 85% | 2936 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 55,637 psi | 86% | 2854 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 55,709 psi | 86% | 3084 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,768 psi | 58% | 1883 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 57,450 psi | 88% | 2920 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 58,276 psi | 90% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,811 psi | 87% | 2930 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 88% | 55,985 psi | 86% | 3002 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 54,172 psi | 83% | 2995 fps | 99.7% |
| Lovex S071 | <<locked>> | 92% | 56,115 psi | 86% | 2890 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 55,521 psi | 85% | 3022 fps | 100% |
| Norma MRP | <<locked>> | 86% | 58,334 psi | 90% | 3031 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 57,406 psi | 88% | 3028 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 90% | 55,564 psi | 85% | 2953 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,856 psi | 60% | 1929 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 56,391 psi | 87% | 3071 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 55,666 psi | 86% | 3035 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 84% | 55,695 psi | 86% | 2913 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 86% | 58,508 psi | 90% | 2986 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 58,117 psi | 89% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 57,101 psi | 88% | 2907 fps | 99.5% |
| Somchem S365 | <<locked>> | 82% | 57,841 psi | 89% | 2913 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 58,697 psi | 90% | 2953 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 58,726 psi | 90% | 2943 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 57,711 psi | 89% | 2963 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 86% | 58,030 psi | 89% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 57,711 psi | 89% | 3035 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 58,494 psi | 90% | 3028 fps | 99.8% |
| Vihtavuori N568 | <<locked>> | 94% | 56,289 psi | 87% | 3035 fps | 99% |
| Vihtavuori N570 | <<locked>> | 96% | 57,537 psi | 89% | 3100 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 88% | 56,333 psi | 87% | 3009 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 58,697 psi | 90% | 2953 fps | 100% |
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% | 44,367 psi | 68% | 2697 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 43,642 psi | 67% | 2772 fps | 96.1% |
| ADI AR 2209 | <<locked>> | 80% | 48,341 psi | 74% | 2825 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 43,569 psi | 67% | 2769 fps | 97.9% |
| ADI AR 2217 | <<locked>> | 82% | 34,795 psi | 54% | 2562 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 94% | 45,556 psi | 70% | 2894 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 80% | 29,950 psi | 46% | 2467 fps | 96.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 48,269 psi | 74% | 2818 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 44,353 psi | 68% | 2772 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 80% | 43,091 psi | 66% | 2710 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 37,362 psi | 57% | 2648 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 48,994 psi | 75% | 2884 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 46,804 psi | 72% | 2884 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 98% | 50,154 psi | 77% | 2940 fps | 96.1% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 44,759 psi | 69% | 2740 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 41,394 psi | 64% | 2707 fps | 98.2% |
| Bofors RP30 | <<locked>> | 80% | 34,925 psi | 54% | 2579 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 44,353 psi | 68% | 2772 fps | 99% |
| Hodgdon H1000 | <<locked>> | 80% | 35,302 psi | 54% | 2579 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 80% | 46,238 psi | 71% | 2769 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 45,324 psi | 70% | 2749 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 52,214 psi | 80% | 2805 fps | 100% |
| Hodgdon Retumbo | 67.4 gr | 80% | 36,608 psi | 56% | 2694 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,427 psi | 44% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,882 psi | 83% | 2864 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 54,795 psi | 84% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 47,007 psi | 72% | 2756 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 80% | 42,409 psi | 65% | 2749 fps | 97.6% |
| IMR 8133 Enduron | <<locked>> | 88% | 36,100 psi | 56% | 2628 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 38,363 psi | 59% | 2572 fps | 99.4% |
| Norma 217 | <<locked>> | 82% | 29,544 psi | 45% | 2467 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 47,181 psi | 73% | 2844 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 42,540 psi | 65% | 2762 fps | 98% |
| Ramshot Magnum | <<locked>> | 80% | 38,319 psi | 59% | 2638 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,138 psi | 45% | 1722 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,824 psi | 55% | 2664 fps | 98.6% |
| ReloadSwiss RS 80 | 78.1 gr | 86% | 41,118 psi | 63% | 2753 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 48,994 psi | 75% | 2799 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 80% | 47,964 psi | 74% | 2808 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 47,630 psi | 73% | 2805 fps | 99.4% |
| Somchem S361 | <<locked>> | 80% | 50,140 psi | 77% | 2792 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 54,027 psi | 83% | 2861 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 48,283 psi | 74% | 2782 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 42,308 psi | 65% | 2661 fps | 99% |
| Vihtavuori N170 | <<locked>> | 90% | 50,459 psi | 78% | 2838 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 80% | 47,863 psi | 74% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,804 psi | 72% | 2841 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 80% | 38,986 psi | 60% | 2657 fps | 96.2% |
| Vihtavuori N568 | <<locked>> | 86% | 42,221 psi | 65% | 2769 fps | 95.9% |
| Vihtavuori N570 | 78.6 gr | 90% | 46,311 psi | 71% | 2890 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 41,756 psi | 64% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 44,527 psi | 69% | 2713 fps | 99% |
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 52 powders for .27 Nosler loaded with the .277 | 156gr | Sako Hammerhead. ADI AR 2218 delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,117 fps. ADI AR 2218 gives the best case fill at 100 %, and 52 of the 52 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 156.0 gr projectile in 0.277" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, Hodgdon TrailBoss 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 80, Vihtavuori N570 rank at the top here: for .27 Nosler with the .277 | 156gr | Sako Hammerhead 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.