Load Specifications
Load data in caliber .28 Nosler with .284 | 145gr | Speer Grand Slam bullet and 70 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 Vihtavuori N560.
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>> | 92% | 57,058 psi | 88% | 3045 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,798 psi | 89% | 3074 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,854 psi | 86% | 3143 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 58,653 psi | 90% | 3136 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 56,637 psi | 87% | 3143 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,897 psi | 84% | 3107 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,269 psi | 76% | 3061 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 58,740 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 58,117 psi | 89% | 3123 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,913 psi | 88% | 3136 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 58,566 psi | 90% | 3107 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 58,363 psi | 90% | 3176 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,303 psi | 85% | 3140 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 57,754 psi | 89% | 3097 fps | 96.8% |
| Bofors RP15 | <<locked>> | 94% | 56,072 psi | 86% | 3123 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 58,102 psi | 89% | 3179 fps | 99.4% |
| Bofors RP5 | <<locked>> | 92% | 56,913 psi | 88% | 3136 fps | 99.6% |
| Bofors RP7 | <<locked>> | 82% | 55,767 psi | 86% | 3015 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 56,434 psi | 87% | 3133 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 82% | 55,651 psi | 86% | 3071 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 57,856 psi | 89% | 3084 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 90% | 56,231 psi | 87% | 3074 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,332 psi | 85% | 3061 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,448 psi | 85% | 2999 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 57,188 psi | 88% | 3258 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,231 psi | 87% | 3107 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,362 psi | 57% | 1959 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,725 psi | 89% | 3061 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,232 psi | 88% | 3041 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 58,030 psi | 89% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,956 psi | 88% | 3058 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 58,711 psi | 90% | 3186 fps | 99.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,904 psi | 69% | 2956 fps | 97% |
| Lovex S065 | <<locked>> | 84% | 58,030 psi | 89% | 3038 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,449 psi | 87% | 3038 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 58,465 psi | 90% | 3064 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,172 psi | 85% | 3058 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 45,237 psi | 70% | 2982 fps | 99% |
| Norma MRP | <<locked>> | 90% | 57,043 psi | 88% | 3159 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,115 psi | 86% | 3054 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 55,753 psi | 86% | 3143 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 58,653 psi | 90% | 3117 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 58,552 psi | 90% | 3140 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,159 psi | 59% | 2001 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 58,073 psi | 89% | 3097 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 56,478 psi | 87% | 3123 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 58,175 psi | 89% | 3248 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 57,464 psi | 88% | 3199 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 55,825 psi | 86% | 3045 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 90% | 57,957 psi | 89% | 3117 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 55,767 psi | 86% | 3015 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 58,030 psi | 89% | 3038 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,449 psi | 87% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,203 psi | 88% | 2989 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 57,537 psi | 89% | 3114 fps | 99.7% |
| Somchem S361 | <<locked>> | 88% | 57,566 psi | 89% | 3038 fps | 98.5% |
| Somchem S365 | <<locked>> | 86% | 57,029 psi | 88% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 58,436 psi | 90% | 3087 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 58,030 psi | 89% | 2976 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 57,653 psi | 89% | 3045 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 58,117 psi | 89% | 3064 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 84% | 57,058 psi | 88% | 3051 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,956 psi | 88% | 3084 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 56,652 psi | 87% | 3156 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 96% | 56,956 psi | 88% | 3136 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 58,276 psi | 90% | 3205 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 57,377 psi | 88% | 2999 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,651 psi | 86% | 3071 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 57,479 psi | 88% | 3196 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 58,421 psi | 90% | 3084 fps | 99.7% |
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% | 38,029 psi | 59% | 2687 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 50,517 psi | 78% | 2956 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 45,179 psi | 70% | 2936 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 41,901 psi | 64% | 2822 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 43,062 psi | 66% | 2881 fps | 96% |
| ADI AR 2217 | <<locked>> | 92% | 41,771 psi | 64% | 2844 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 88% | 33,127 psi | 51% | 2671 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,327 psi | 74% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,003 psi | 65% | 2815 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,898 psi | 58% | 2753 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,724 psi | 56% | 2717 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,633 psi | 49% | 2618 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,785 psi | 63% | 2871 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,995 psi | 78% | 2972 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 37,710 psi | 58% | 2749 fps | 95.4% |
| Bofors RP30 | <<locked>> | 88% | 38,537 psi | 59% | 2795 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 37,898 psi | 58% | 2753 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 52,446 psi | 81% | 2959 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 39,900 psi | 61% | 2802 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 51,895 psi | 80% | 3005 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 54,201 psi | 83% | 3025 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 42,960 psi | 66% | 2822 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 45,107 psi | 69% | 2867 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,455 psi | 70% | 2835 fps | 100% |
| Hodgdon Retumbo | 70.4 gr | 84% | 35,389 psi | 54% | 2772 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 52,301 psi | 80% | 3041 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 43% | 1752 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,659 psi | 73% | 2884 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,679 psi | 83% | 2982 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 47,892 psi | 74% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,466 psi | 64% | 2756 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 41,510 psi | 64% | 2854 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 39,131 psi | 60% | 2828 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 51,372 psi | 79% | 2930 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,763 psi | 77% | 2923 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 32,779 psi | 50% | 2559 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 48,225 psi | 74% | 2930 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 34,258 psi | 53% | 2723 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 39,943 psi | 61% | 2828 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 49,240 psi | 76% | 2940 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 41,510 psi | 64% | 2867 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 48,182 psi | 74% | 2936 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 34,577 psi | 53% | 2667 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,660 psi | 44% | 1795 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,618 psi | 78% | 2976 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,936 psi | 75% | 3002 fps | 100% |
| ReloadSwiss RS 76 | 75.4 gr | 84% | 34,708 psi | 53% | 2746 fps | 96.2% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 45,571 psi | 70% | 2979 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 43,236 psi | 67% | 2805 fps | 96.2% |
| Rottweil R 905 | <<locked>> | 80% | 41,452 psi | 64% | 2805 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 52,446 psi | 81% | 2959 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,372 psi | 79% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,763 psi | 77% | 2923 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,140 psi | 77% | 2874 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,118 psi | 63% | 2799 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 44,092 psi | 68% | 2792 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 46,470 psi | 71% | 2890 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,959 psi | 65% | 2785 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 54,563 psi | 84% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,633 psi | 78% | 2933 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,492 psi | 56% | 2651 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 50,096 psi | 77% | 2936 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,988 psi | 63% | 2799 fps | 99.9% |
| Vihtavuori N560 | 71.3 gr | 82% | 42,786 psi | 66% | 2884 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 88% | 43,453 psi | 67% | 2877 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 94% | 46,818 psi | 72% | 2995 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,951 psi | 77% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,112 psi | 80% | 3012 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,388 psi | 51% | 2743 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,435 psi | 59% | 2703 fps | 95.9% |
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 75 powders for .28 Nosler loaded with the .284 | 145gr | Speer Grand Slam. Hodgdon Retumbo delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,959 fps to 3,258 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, Vihtavuori N560 rank at the top here: for .28 Nosler with the .284 | 145gr | Speer Grand Slam they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, IMR 7977 Enduron, Vihtavuori N170 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.