Load data for .28 Nosler + .284 | 160gr | Sierra SBT GameKing

.28 Nosler cartridge drawing
Sierra logo

Load Specifications

Bullet Manufacturer:Sierra
Bullet Weight:160 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.59"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:97 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:11.5

Load data in caliber .28 Nosler with .284 | 160gr | Sierra SBT GameKing bullet and 68 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"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>90%56,420 psi87%2907 fps100%
Accurate 4350<<locked>>82%56,884 psi88%2923 fps100%
Accurate MAGPRO<<locked>>88%55,187 psi85%3005 fps98.6%
ADI AR 2209<<locked>>88%57,943 psi89%2995 fps99.9%
ADI AR 2213<<locked>>90%56,043 psi86%3005 fps99.4%
ADI AR 2217ᴾ<<locked>>100%58,218 psi90%3038 fps99.8%
ADI AR 2225ᴾ<<locked>>100%52,547 psi81%2995 fps100%
Alliant Reloder-16<<locked>>84%58,102 psi89%2982 fps100%
Alliant Reloder-19<<locked>>88%57,246 psi88%2979 fps99.9%
Alliant Reloder-22<<locked>>90%56,405 psi87%2999 fps99.9%
Alliant Reloder-23<<locked>>92%58,015 psi89%2963 fps100%
Alliant Reloder-25<<locked>>96%58,044 psi89%3035 fps100%
Alliant Reloder-26<<locked>>88%58,813 psi90%3054 fps100%
Alliant Reloder-33ᴾ<<locked>>100%55,651 psi86%3061 fps97.2%
Baschieri & Pellagri 109<<locked>>92%56,768 psi87%2963 fps97.6%
Bofors RP15<<locked>>92%55,593 psi86%2986 fps99.8%
Bofors RP30<<locked>>98%57,638 psi89%3045 fps99.8%
Bofors RP5<<locked>>90%56,405 psi87%2999 fps99.9%
Bofors RP7<<locked>>82%58,189 psi90%2923 fps100%
Hodgdon H1000<<locked>>96%55,680 psi86%2999 fps99.8%
Hodgdon H414<<locked>>82%58,378 psi90%2982 fps100%
Hodgdon H4831<<locked>>88%55,405 psi85%2936 fps98.9%
Hodgdon H4831 SC<<locked>>90%58,146 psi89%2982 fps99.2%
Hodgdon Hybrid 100V<<locked>>86%58,146 psi89%2900 fps100%
Hodgdon Retumbo<<locked>>96%56,826 psi87%3117 fps100%
Hodgdon TrailBossᴾ<<locked>>100%37,521 psi58%1867 fps100%
IMR 4350<<locked>>84%56,710 psi87%2913 fps100%
IMR 4831<<locked>>84%57,188 psi88%2917 fps100%
IMR 4955 Enduron<<locked>>88%56,115 psi86%2920 fps99.1%
IMR 7828 SSC<<locked>>92%58,030 psi89%3045 fps99.6%
IMR 8133 Enduronᴾ<<locked>>100%48,109 psi74%2904 fps98.6%
Lovex S065<<locked>>82%56,985 psi88%2890 fps100%
Lovex S070<<locked>>82%55,361 psi85%2887 fps100%
Lovex S071<<locked>>96%57,783 psi89%2927 fps100%
Norma 204<<locked>>84%57,928 psi89%2972 fps99.9%
Norma 217ᴾ<<locked>>100%48,747 psi75%2930 fps99.9%
Norma MRP<<locked>>88%56,449 psi87%3018 fps100%
Norma URP<<locked>>84%58,813 psi90%2959 fps100%
Ramshot Grand<<locked>>90%55,114 psi85%3005 fps99.6%
Ramshot Hunter<<locked>>84%57,783 psi89%2969 fps100%
Ramshot Magnum<<locked>>94%57,740 psi89%2999 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%38,392 psi59%1909 fps100%
ReloadSwiss RS 62<<locked>>82%57,043 psi88%2949 fps100%
ReloadSwiss RS 70<<locked>>82%55,579 psi86%2976 fps100%
ReloadSwiss RS 76<<locked>>96%57,696 psi89%3110 fps100%
ReloadSwiss RS 80<<locked>>98%57,116 psi88%3071 fps99.1%
Rottweil R 904<<locked>>88%58,465 psi90%2963 fps99.6%
Rottweil R 905<<locked>>88%57,058 psi88%2972 fps99.9%
Rottweil R 907<<locked>>82%58,189 psi90%2923 fps100%
Shooters World Long Rifle<<locked>>82%56,985 psi88%2890 fps100%
Shooters World SW4350<<locked>>82%55,361 psi85%2887 fps100%
SNPE Vectan Tubal 7000<<locked>>82%55,956 psi86%2844 fps100%
SNPE Vectan Tubal 8000<<locked>>88%56,695 psi87%2969 fps99.9%
Somchem S361<<locked>>86%56,333 psi87%2897 fps99%
Somchem S365<<locked>>84%56,391 psi87%2910 fps100%
Somchem S385<<locked>>88%57,421 psi88%2943 fps100%
Vihtavuori N160<<locked>>82%56,623 psi87%2897 fps100%
Vihtavuori N165<<locked>>92%57,203 psi88%2927 fps100%
Vihtavuori N550<<locked>>82%55,985 psi86%2904 fps100%
Vihtavuori N555<<locked>>88%56,289 psi87%2940 fps100%
Vihtavuori N560<<locked>>88%56,014 psi86%3015 fps99.1%
Vihtavuori N565<<locked>>94%56,405 psi87%3005 fps99.3%
Vihtavuori N568<<locked>>98%57,624 psi89%3071 fps98.8%
Vihtavuori N570<<locked>>98%54,752 psi84%3064 fps96.7%
Winchester 6.5 StaBALL<<locked>>82%56,057 psi86%2848 fps100%
Winchester 760<<locked>>82%58,610 psi90%2986 fps100%
Winchester StaBALL HD<<locked>>92%57,580 psi89%3054 fps100%
Winchester Supreme 780<<locked>>90%57,464 psi88%2943 fps99.9%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>80%40,292 psi62%2625 fps99.3%
Accurate 4350<<locked>>80%53,287 psi82%2871 fps100%
Accurate MAGPRO<<locked>>80%41,510 psi64%2740 fps95.3%
ADI AR 2209<<locked>>80%44,382 psi68%2756 fps98.4%
ADI AR 2213<<locked>>80%39,624 psi61%2687 fps95.9%
ADI AR 2217<<locked>>88%38,696 psi60%2664 fps96%
ADI AR 2225<<locked>>84%30,835 psi47%2503 fps95.8%
Alliant Reloder-16<<locked>>80%50,937 psi78%2874 fps100%
Alliant Reloder-19<<locked>>80%44,266 psi68%2749 fps98.4%
Alliant Reloder-22<<locked>>80%40,219 psi62%2694 fps97.5%
Alliant Reloder-23<<locked>>80%39,030 psi60%2648 fps100%
Alliant Reloder-25<<locked>>80%33,736 psi52%2572 fps98.6%
Alliant Reloder-26<<locked>>80%43,671 psi67%2805 fps100%
Alliant Reloder-33<<locked>>96%47,732 psi73%2917 fps95.2%
Baschieri & Pellagri 109<<locked>>86%46,992 psi72%2785 fps95.2%
Bofors RP15<<locked>>80%37,478 psi58%2631 fps96.5%
Bofors RP30<<locked>>84%35,853 psi55%2618 fps95.1%
Bofors RP5<<locked>>80%40,219 psi62%2694 fps97.5%
Bofors RP7<<locked>>80%54,665 psi84%2867 fps100%
Hodgdon H1000<<locked>>84%36,883 psi57%2621 fps96%
Hodgdon H414<<locked>>80%54,563 psi84%2923 fps100%
Hodgdon H4831<<locked>>80%42,148 psi65%2690 fps96.1%
Hodgdon H4831 SC<<locked>>80%41,466 psi64%2674 fps95.9%
Hodgdon Hybrid 100V<<locked>>80%47,993 psi74%2749 fps100%
Hodgdon Retumbo65.7 gr80%32,924 psi51%2595 fps95.3%
Hodgdon TrailBoss<<locked>>80%28,152 psi43%1667 fps100%
IMR 4350<<locked>>80%50,067 psi77%2805 fps99.7%
IMR 4831<<locked>>80%50,357 psi77%2812 fps100%
IMR 4955 Enduron<<locked>>80%43,598 psi67%2690 fps96.7%
IMR 7828 SSC<<locked>>80%38,392 psi59%2667 fps95.6%
IMR 8133 Enduron<<locked>>92%36,622 psi56%2654 fps95.2%
Lovex S065<<locked>>80%53,577 psi82%2838 fps100%
Lovex S070<<locked>>80%52,025 psi80%2835 fps100%
Lovex S071<<locked>>80%34,824 psi54%2503 fps98.2%
Norma 204<<locked>>80%50,560 psi78%2851 fps99.3%
Norma 217<<locked>>88%32,227 psi50%2562 fps95.8%
Norma MRP<<locked>>80%42,641 psi66%2769 fps99.1%
Norma URP<<locked>>80%51,750 psi80%2851 fps100%
Ramshot Grand<<locked>>80%38,174 psi59%2674 fps95.9%
Ramshot Hunter<<locked>>80%50,589 psi78%2858 fps100%
Ramshot Magnum<<locked>>80%34,127 psi53%2549 fps96.4%
ReloadSwiss RS 14<<locked>>80%28,834 psi44%1706 fps100%
ReloadSwiss RS 62<<locked>>80%53,316 psi82%2894 fps100%
ReloadSwiss RS 70<<locked>>80%51,808 psi80%2917 fps100%
ReloadSwiss RS 7670.3 gr80%32,010 psi49%2566 fps96.3%
ReloadSwiss RS 80<<locked>>90%42,076 psi65%2792 fps95.7%
Rottweil R 904<<locked>>80%45,339 psi70%2733 fps97.7%
Rottweil R 905<<locked>>80%43,787 psi67%2736 fps98.4%
Rottweil R 907<<locked>>80%54,665 psi84%2867 fps100%
Shooters World Long Rifle<<locked>>80%53,577 psi82%2838 fps100%
Shooters World SW4350<<locked>>80%52,025 psi80%2835 fps100%
SNPE Vectan Tubal 7000<<locked>>80%52,504 psi81%2792 fps100%
SNPE Vectan Tubal 8000<<locked>>80%43,453 psi67%2730 fps98.3%
Somchem S361<<locked>>80%46,224 psi71%2723 fps97.3%
Somchem S365<<locked>>80%49,400 psi76%2805 fps100%
Somchem S385<<locked>>80%44,251 psi68%2717 fps99.1%
Vihtavuori N160<<locked>>80%53,171 psi82%2844 fps100%
Vihtavuori N165<<locked>>80%38,566 psi59%2589 fps97.6%
Vihtavuori N550<<locked>>80%52,402 psi81%2848 fps100%
Vihtavuori N555<<locked>>80%43,424 psi67%2726 fps100%
Vihtavuori N56068.2 gr80%42,467 psi65%2759 fps96.4%
Vihtavuori N565<<locked>>84%40,176 psi62%2694 fps95.9%
Vihtavuori N568<<locked>>90%43,424 psi67%2808 fps95.5%
Vihtavuori N570<<locked>>96%50,937 psi78%2992 fps95.7%
Winchester 6.5 StaBALL<<locked>>80%52,460 psi81%2799 fps100%
Winchester 760<<locked>>80%54,810 psi84%2927 fps100%
Winchester StaBALL HD<<locked>>80%36,274 psi56%2690 fps100%
Winchester Supreme 780<<locked>>80%40,654 psi63%2644 fps97.6%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 68 powders for .28 Nosler loaded with the .284 | 160gr | Sierra SBT GameKing. Hodgdon Retumbo delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,117 fps. ADI AR 2217 gives the best case fill at 100 %, and 68 of the 68 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 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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 | 160gr | Sierra SBT GameKing 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.

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