Load Specifications
Load data in caliber .28 Nosler with .284 | 160gr | Speer Grand Slam bullet and 66 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 76 and ReloadSwiss RS 80.
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>> | 90% | 56,913 psi | 88% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 57,493 psi | 88% | 2933 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 55,883 psi | 86% | 3018 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 88% | 58,436 psi | 90% | 3002 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 56,768 psi | 87% | 3015 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 98% | 54,998 psi | 85% | 2986 fps | 99.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,171 psi | 82% | 3005 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 58,726 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 57,957 psi | 89% | 2992 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,145 psi | 88% | 3012 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 58,566 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 58,769 psi | 90% | 3045 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 55,521 psi | 85% | 3005 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,478 psi | 87% | 3074 fps | 97.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 57,290 psi | 88% | 2972 fps | 97.7% |
| Bofors RP15 | <<locked>> | 92% | 56,318 psi | 87% | 2999 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 58,349 psi | 90% | 3054 fps | 99.8% |
| Bofors RP5 | <<locked>> | 90% | 57,145 psi | 88% | 3012 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 58,740 psi | 90% | 2933 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 56,608 psi | 87% | 3012 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 88% | 56,101 psi | 86% | 2949 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 88% | 54,998 psi | 85% | 2933 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 58,726 psi | 90% | 2907 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 57,595 psi | 89% | 3130 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,579 psi | 58% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 57,203 psi | 88% | 2923 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 57,740 psi | 89% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,565 psi | 87% | 2930 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 58,740 psi | 90% | 3054 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,791 psi | 75% | 2913 fps | 98.8% |
| Lovex S065 | <<locked>> | 82% | 57,522 psi | 88% | 2897 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 55,883 psi | 86% | 2900 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 58,552 psi | 90% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 84% | 58,653 psi | 90% | 2986 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 49,458 psi | 76% | 2940 fps | 99.9% |
| Norma MRP | <<locked>> | 88% | 57,203 psi | 88% | 3028 fps | 100% |
| Norma URP | <<locked>> | 82% | 55,767 psi | 86% | 2913 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,898 psi | 86% | 3015 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 58,494 psi | 90% | 2979 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 58,436 psi | 90% | 3009 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,450 psi | 59% | 1913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 57,812 psi | 89% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,391 psi | 87% | 2986 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 58,610 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 57,986 psi | 89% | 3084 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 86% | 55,376 psi | 85% | 2913 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 88% | 57,624 psi | 89% | 2979 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 58,740 psi | 90% | 2933 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 57,522 psi | 88% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 55,883 psi | 86% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,463 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 57,203 psi | 88% | 2979 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 56,942 psi | 88% | 2910 fps | 99.1% |
| Somchem S365 | <<locked>> | 84% | 56,985 psi | 88% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 58,131 psi | 89% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 57,188 psi | 88% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 57,885 psi | 89% | 2936 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 56,478 psi | 87% | 2910 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,072 psi | 88% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,710 psi | 87% | 3028 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 94% | 57,305 psi | 88% | 3018 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 58,537 psi | 90% | 3084 fps | 98.9% |
| Vihtavuori N570 | <<locked>> | 98% | 55,651 psi | 86% | 3077 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 56,739 psi | 87% | 2858 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 58,450 psi | 90% | 3064 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 57,899 psi | 89% | 2949 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% | 40,799 psi | 63% | 2635 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 53,867 psi | 83% | 2881 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,148 psi | 65% | 2753 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 44,715 psi | 69% | 2762 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 80% | 40,089 psi | 62% | 2697 fps | 96.2% |
| ADI AR 2217 | <<locked>> | 86% | 36,579 psi | 56% | 2612 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 84% | 31,212 psi | 48% | 2516 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,576 psi | 79% | 2884 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,744 psi | 69% | 2756 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,712 psi | 63% | 2707 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,566 psi | 61% | 2657 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,026 psi | 52% | 2579 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,222 psi | 68% | 2815 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 48,501 psi | 75% | 2930 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 47,456 psi | 73% | 2792 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 37,956 psi | 58% | 2641 fps | 96.7% |
| Bofors RP30 | <<locked>> | 84% | 36,318 psi | 56% | 2628 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 40,712 psi | 63% | 2707 fps | 97.7% |
| Bofors RP7 | <<locked>> | 80% | 55,216 psi | 85% | 2877 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 34,766 psi | 53% | 2569 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 80% | 42,612 psi | 66% | 2700 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,945 psi | 65% | 2687 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,385 psi | 74% | 2756 fps | 100% |
| Hodgdon Retumbo | 66.4 gr | 80% | 33,359 psi | 51% | 2608 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,137 psi | 43% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,386 psi | 78% | 2812 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 50,908 psi | 78% | 2822 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,874 psi | 67% | 2697 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 80% | 38,841 psi | 60% | 2677 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 92% | 37,057 psi | 57% | 2664 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 54,143 psi | 83% | 2848 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 52,576 psi | 81% | 2844 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,186 psi | 54% | 2510 fps | 98.3% |
| Norma 204 | <<locked>> | 80% | 51,068 psi | 79% | 2861 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 32,648 psi | 50% | 2569 fps | 96% |
| Norma MRP | <<locked>> | 80% | 43,163 psi | 66% | 2779 fps | 99.2% |
| Norma URP | <<locked>> | 80% | 52,301 psi | 80% | 2861 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,653 psi | 59% | 2687 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 80% | 51,111 psi | 79% | 2864 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,708 psi | 53% | 2566 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,964 psi | 45% | 1713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 54,056 psi | 83% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,402 psi | 81% | 2927 fps | 100% |
| ReloadSwiss RS 76 | 71 gr | 80% | 32,387 psi | 50% | 2575 fps | 96.5% |
| ReloadSwiss RS 80 | 80.5 gr | 90% | 42,699 psi | 66% | 2805 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 45,818 psi | 70% | 2743 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 80% | 44,295 psi | 68% | 2746 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 80% | 55,216 psi | 85% | 2877 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 54,143 psi | 83% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 52,576 psi | 81% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,852 psi | 81% | 2799 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,961 psi | 68% | 2743 fps | 98.5% |
| Somchem S361 | <<locked>> | 80% | 46,615 psi | 72% | 2730 fps | 97.4% |
| Somchem S365 | <<locked>> | 80% | 49,792 psi | 77% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,715 psi | 69% | 2726 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 53,708 psi | 83% | 2854 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 39,044 psi | 60% | 2598 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 80% | 52,924 psi | 81% | 2854 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,976 psi | 68% | 2733 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,975 psi | 66% | 2772 fps | 96.5% |
| Vihtavuori N565 | <<locked>> | 82% | 38,101 psi | 59% | 2644 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 90% | 44,048 psi | 68% | 2822 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 96% | 51,605 psi | 79% | 3005 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 52,924 psi | 81% | 2805 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,883 psi | 57% | 2700 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,118 psi | 63% | 2651 fps | 97.7% |
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 66 powders for .28 Nosler loaded with the .284 | 160gr | Speer Grand Slam. Hodgdon Retumbo delivers the highest muzzle velocity at 3,130 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,130 fps. ADI AR 2225 gives the best case fill at 100 %, and 66 of the 66 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 160.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-33, 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 76, ReloadSwiss RS 80 rank at the top here: for .28 Nosler with the .284 | 160gr | Speer Grand Slam 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.