Load data for 7 mm Rem. Mag. + .284 | 160gr | Sierra GameKing

7 mm Rem. Mag. cartridge drawing
Sierra logo

Load Specifications

Bullet Manufacturer:Sierra
Bullet Weight:160 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:82 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:11.0

Load data in caliber 7 mm Rem. Mag. with .284 | 160gr | Sierra GameKing bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and Winchester StaBALL HD.

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.

A valid access license is required to use the Personalized Load Calculator.

You can find more information in our FAQ: How can I use the Personalized Load Calculator?

Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2700<<locked>>82%53,301 psi85%2736 fps99.3%
Accurate 3100<<locked>>96%55,259 psi89%2838 fps100%
Accurate 4350<<locked>>86%53,417 psi86%2825 fps100%
Accurate MAGPRO<<locked>>96%54,447 psi87%2930 fps96.7%
ADI AR 2208<<locked>>82%54,839 psi88%2785 fps100%
ADI AR 2209<<locked>>92%54,056 psi87%2874 fps99%
ADI AR 2213<<locked>>96%55,535 psi89%2933 fps98.4%
ADI AR 2217ᴾ<<locked>>100%46,282 psi74%2762 fps96.7%
ADI AR 2225ᴾ<<locked>>100%41,075 psi66%2720 fps98.4%
Alliant Power Pro Varmint<<locked>>92%54,244 psi87%2867 fps99%
Alliant Reloder- TS 15.5<<locked>>82%56,231 psi90%2812 fps100%
Alliant Reloder-16<<locked>>88%54,273 psi87%2877 fps100%
Alliant Reloder-17<<locked>>84%55,274 psi89%2894 fps100%
Alliant Reloder-19<<locked>>92%53,577 psi86%2861 fps99%
Alliant Reloder-22<<locked>>96%55,288 psi89%2930 fps99.3%
Alliant Reloder-23<<locked>>98%56,289 psi90%2904 fps100%
Alliant Reloder-25ᴾ<<locked>>100%51,837 psi83%2904 fps100%
Alliant Reloder-26<<locked>>92%52,489 psi84%2930 fps100%
Bofors RP15<<locked>>98%54,172 psi87%2910 fps99.1%
Bofors RP30ᴾ<<locked>>100%47,877 psi77%2835 fps97.6%
Bofors RP5<<locked>>96%55,288 psi89%2930 fps99.3%
Bofors RP7<<locked>>86%56,144 psi90%2825 fps99.7%
Hodgdon H1000ᴾ<<locked>>100%47,514 psi76%2789 fps97.7%
Hodgdon H414<<locked>>84%56,188 psi90%2890 fps99.9%
Hodgdon H4350<<locked>>88%56,362 psi90%2864 fps99.4%
Hodgdon H4831<<locked>>98%54,679 psi88%2858 fps97.7%
Hodgdon H4831 SC<<locked>>94%54,389 psi87%2854 fps97.6%
Hodgdon Hybrid 100V<<locked>>90%54,534 psi87%2802 fps100%
Hodgdon Retumboᴾ<<locked>>100%50,705 psi81%2959 fps99.4%
Hodgdon Superformance<<locked>>86%55,390 psi89%2910 fps99.8%
Hodgdon TrailBossᴾ<<locked>>100%36,869 psi59%1772 fps100%
IMR 4064<<locked>>82%54,070 psi87%2762 fps100%
IMR 4166 Enduron<<locked>>84%55,869 psi90%2799 fps99.8%
IMR 4350<<locked>>88%54,085 psi87%2808 fps99.5%
IMR 4451 Enduron<<locked>>84%54,114 psi87%2792 fps99.7%
IMR 4831<<locked>>92%54,940 psi88%2835 fps100%
IMR 4955 Enduron<<locked>>92%53,243 psi85%2802 fps97.5%
IMR 7828 SSC<<locked>>94%53,301 psi85%2907 fps98.1%
Lovex S065<<locked>>86%54,679 psi88%2792 fps100%
Lovex S070<<locked>>88%56,246 psi90%2841 fps99.9%
Lovex S071ᴾ<<locked>>100%52,837 psi85%2802 fps99.9%
Norma 204<<locked>>88%54,940 psi88%2861 fps99%
Norma 217ᴾ<<locked>>100%36,608 psi59%2641 fps96.3%
Norma MRP<<locked>>94%55,013 psi88%2949 fps99.8%
Norma URP<<locked>>88%55,521 psi89%2861 fps100%
Ramshot Grand<<locked>>92%53,011 psi85%2917 fps98.4%
Ramshot Hunter<<locked>>88%54,346 psi87%2864 fps100%
Ramshot Magnum<<locked>>96%53,722 psi86%2890 fps99.6%
ReloadSwiss RS 14ᴾ<<locked>>100%37,782 psi61%1818 fps100%
ReloadSwiss RS 60<<locked>>82%54,766 psi88%2881 fps100%
ReloadSwiss RS 62<<locked>>86%53,345 psi86%2848 fps100%
ReloadSwiss RS 70<<locked>>88%55,158 psi88%2927 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%51,126 psi82%2959 fps99.9%
Rottweil R 903<<locked>>82%53,954 psi87%2776 fps100%
Rottweil R 904<<locked>>92%55,608 psi89%2848 fps98.4%
Rottweil R 905<<locked>>92%53,156 psi85%2851 fps99%
Rottweil R 907<<locked>>86%56,144 psi90%2825 fps99.7%
Shooters World Long Rifle<<locked>>86%54,679 psi88%2792 fps100%
Shooters World SW4350<<locked>>88%56,246 psi90%2841 fps99.9%
SNPE Vectan SP 11<<locked>>82%55,288 psi89%2831 fps100%
SNPE Vectan Tubal 5000<<locked>>82%53,911 psi86%2651 fps100%
SNPE Vectan Tubal 7000<<locked>>86%54,012 psi87%2746 fps99.7%
SNPE Vectan Tubal 8000<<locked>>94%56,202 psi90%2904 fps99.3%
Somchem S355<<locked>>82%53,751 psi86%2772 fps100%
Somchem S361<<locked>>90%53,548 psi86%2782 fps97.4%
Somchem S365<<locked>>90%55,448 psi89%2861 fps100%
Somchem S385<<locked>>92%53,606 psi86%2825 fps99.5%
Unknown powder<<locked>>86%55,840 psi90%2864 fps100%
Vihtavuori N150<<locked>>88%55,506 psi89%2756 fps100%
Vihtavuori N160<<locked>>86%56,202 psi90%2831 fps100%
Vihtavuori N165<<locked>>98%54,723 psi88%2831 fps99.4%
Vihtavuori N550<<locked>>84%53,214 psi85%2825 fps100%
Vihtavuori N555<<locked>>94%54,853 psi88%2877 fps100%
Vihtavuori N560<<locked>>96%55,506 psi89%2956 fps98.1%
Vihtavuori N565ᴾ<<locked>>100%54,404 psi87%2917 fps98.1%
Winchester 6.5 StaBALL<<locked>>86%53,113 psi85%2759 fps100%
Winchester 760<<locked>>84%56,188 psi90%2890 fps99.9%
Winchester StaBALL HD<<locked>>98%53,142 psi85%2979 fps100%
Winchester Supreme 780<<locked>>92%54,926 psi88%2841 fps99.1%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2700<<locked>>80%49,966 psi80%2680 fps98.9%
Accurate 3100<<locked>>80%32,285 psi52%2402 fps96.2%
Accurate 4350<<locked>>80%43,453 psi70%2657 fps99.8%
Accurate MAGPRO<<locked>>94%50,807 psi81%2867 fps95.8%
ADI AR 2208<<locked>>80%51,605 psi83%2736 fps100%
ADI AR 2209<<locked>>82%38,986 psi63%2585 fps95.6%
ADI AR 2213<<locked>>88%42,395 psi68%2687 fps95.2%
ADI AR 2217<<locked>>98%43,395 psi70%2703 fps95.8%
ADI AR 2225<<locked>>94%33,895 psi54%2536 fps95.6%
Alliant Power Pro Varmint<<locked>>82%39,262 psi63%2589 fps95.7%
Alliant Reloder- TS 15.5<<locked>>80%52,692 psi84%2759 fps100%
Alliant Reloder-16<<locked>>80%41,742 psi67%2664 fps99.9%
Alliant Reloder-17<<locked>>80%48,109 psi77%2785 fps100%
Alliant Reloder-19<<locked>>82%38,914 psi62%2582 fps95.7%
Alliant Reloder-22<<locked>>84%36,825 psi59%2572 fps95%
Alliant Reloder-23<<locked>>80%30,966 psi50%2431 fps99%
Alliant Reloder-25<<locked>>82%29,008 psi47%2388 fps95.1%
Alliant Reloder-2658.3 gr80%33,634 psi54%2556 fps98.1%
Bofors RP15<<locked>>88%39,102 psi63%2625 fps95.7%
Bofors RP30<<locked>>94%39,044 psi63%2657 fps95%
Bofors RP5<<locked>>84%36,825 psi59%2572 fps95%
Bofors RP7<<locked>>80%46,543 psi75%2661 fps98.5%
Hodgdon H1000<<locked>>96%41,597 psi67%2667 fps95.9%
Hodgdon H414<<locked>>80%48,965 psi79%2772 fps99.3%
Hodgdon H4350<<locked>>80%43,932 psi70%2644 fps97.4%
Hodgdon H4831<<locked>>92%45,150 psi72%2694 fps95.5%
Hodgdon H4831 SC<<locked>>88%44,469 psi71%2680 fps95.2%
Hodgdon Hybrid 100V<<locked>>80%39,276 psi63%2549 fps100%
Hodgdon Retumbo<<locked>>90%36,550 psi59%2641 fps95.4%
Hodgdon Superformance<<locked>>80%44,425 psi71%2723 fps98.4%
Hodgdon TrailBoss<<locked>>80%27,717 psi44%1585 fps100%
IMR 4064<<locked>>80%50,821 psi81%2713 fps100%
IMR 4166 Enduron<<locked>>80%49,516 psi79%2694 fps99.3%
IMR 4350<<locked>>80%42,032 psi67%2592 fps97.7%
IMR 4451 Enduron<<locked>>80%48,008 psi77%2690 fps99.1%
IMR 4831<<locked>>80%37,695 psi60%2526 fps99.2%
IMR 4955 Enduron<<locked>>86%44,237 psi71%2638 fps95.4%
IMR 7828 SSC<<locked>>88%43,352 psi70%2720 fps95.7%
Lovex S065<<locked>>80%45,426 psi73%2638 fps99.5%
Lovex S070<<locked>>80%43,758 psi70%2625 fps98.6%
Lovex S071<<locked>>82%29,660 psi48%2333 fps95%
Norma 204<<locked>>80%41,916 psi67%2628 fps96.4%
Norma 217<<locked>>98%34,360 psi55%2582 fps95.2%
Norma MRP<<locked>>80%33,663 psi54%2523 fps95.3%
Norma URP<<locked>>80%42,743 psi69%2644 fps99.7%
Ramshot Grand62.7 gr86%42,366 psi68%2713 fps95.8%
Ramshot Hunter<<locked>>80%41,669 psi67%2638 fps98.7%
Ramshot Magnum<<locked>>86%36,927 psi59%2572 fps96%
ReloadSwiss RS 14<<locked>>80%28,210 psi45%1621 fps100%
ReloadSwiss RS 60<<locked>>80%51,053 psi82%2828 fps100%
ReloadSwiss RS 62<<locked>>80%43,323 psi69%2677 fps99.7%
ReloadSwiss RS 70<<locked>>80%41,510 psi67%2687 fps99.5%
ReloadSwiss RS 76<<locked>>88%33,504 psi54%2559 fps95.2%
Rottweil R 903<<locked>>80%50,415 psi81%2723 fps100%
Rottweil R 904<<locked>>84%42,989 psi69%2621 fps95.7%
Rottweil R 905<<locked>>82%38,000 psi61%2562 fps95.5%
Rottweil R 907<<locked>>80%46,543 psi75%2661 fps98.5%
Shooters World Long Rifle<<locked>>80%45,426 psi73%2638 fps99.5%
Shooters World SW4350<<locked>>80%43,758 psi70%2625 fps98.6%
SNPE Vectan SP 11<<locked>>80%51,793 psi83%2779 fps100%
SNPE Vectan Tubal 5000<<locked>>80%50,923 psi82%2612 fps100%
SNPE Vectan Tubal 7000<<locked>>80%44,440 psi71%2585 fps98.6%
SNPE Vectan Tubal 8000<<locked>>82%37,666 psi60%2556 fps95.4%
Somchem S355<<locked>>80%50,343 psi81%2720 fps100%
Somchem S361<<locked>>84%43,787 psi70%2612 fps95%
Somchem S365<<locked>>80%39,581 psi63%2605 fps100%
Somchem S385<<locked>>80%36,230 psi58%2493 fps95.9%
Unknown powder<<locked>>80%45,861 psi74%2700 fps99.8%
Vihtavuori N150<<locked>>80%43,294 psi69%2566 fps100%
Vihtavuori N160<<locked>>80%45,919 psi74%2671 fps99.9%
Vihtavuori N165<<locked>>86%36,956 psi59%2503 fps95.7%
Vihtavuori N550<<locked>>80%46,630 psi75%2717 fps99.9%
Vihtavuori N555<<locked>>80%34,664 psi56%2503 fps98.9%
Vihtavuori N560<<locked>>90%45,237 psi73%2772 fps95.8%
Vihtavuori N565<<locked>>94%44,324 psi71%2740 fps95.8%
Winchester 6.5 StaBALL<<locked>>80%43,134 psi69%2605 fps100%
Winchester 760<<locked>>80%48,965 psi79%2772 fps99.3%
Winchester StaBALL HD56 gr80%27,528 psi44%2431 fps98.9%
Winchester Supreme 780<<locked>>82%38,595 psi62%2546 fps95.6%

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 79 powders for 7 mm Rem. Mag. loaded with the .284 | 160gr | Sierra GameKing. Winchester StaBALL HD delivers the highest muzzle velocity at 2,979 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,979 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Alliant Reloder-26, Ramshot Grand, Winchester StaBALL HD rank at the top here: for 7 mm Rem. Mag. with the .284 | 160gr | Sierra 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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