Load data for 7 mm-08 Rem. + .284 | 140gr | Sierra SBT GameKing

7 mm-08 Rem. cartridge drawing
Sierra logo

Load Specifications

Bullet Manufacturer:Sierra
Bullet Weight:140 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.035"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:55 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:60,191 psi
Recommended Twist Rate:1:12.0

Load data in caliber 7 mm-08 Rem. with .284 | 140gr | Sierra SBT GameKing bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 52 and ReloadSwiss RS 60.

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 2015<<locked>>88%53,011 psi88%2671 fps100%
Accurate 2460<<locked>>84%51,329 psi85%2690 fps100%
Accurate 2495<<locked>>94%53,635 psi89%2730 fps100%
Accurate 2520<<locked>>88%52,895 psi88%2749 fps100%
Accurate 4064<<locked>>96%53,417 psi89%2769 fps100%
Accurate 4350ᴾ<<locked>>100%45,368 psi75%2710 fps97.1%
Accurate LT-30<<locked>>82%53,011 psi88%2621 fps100%
Accurate LT-32<<locked>>82%53,403 psi89%2641 fps100%
ADI AR 2206H<<locked>>90%51,895 psi86%2749 fps99.2%
ADI AR 2208<<locked>>96%53,098 psi88%2749 fps98.8%
ADI AR 2219<<locked>>82%53,113 psi88%2730 fps100%
ADI Benchmark 8208<<locked>>88%51,300 psi85%2710 fps99.7%
Alliant AR-Comp<<locked>>90%54,288 psi90%2743 fps100%
Alliant Power Pro 1200-R<<locked>>84%52,591 psi87%2808 fps99.6%
Alliant Power Pro 2000-MR<<locked>>92%51,111 psi85%2848 fps98.6%
Alliant Reloder- TS 15.5<<locked>>96%52,011 psi86%2766 fps99.7%
Alliant Reloder-10x<<locked>>84%52,982 psi88%2677 fps100%
Alliant Reloder-15<<locked>>94%52,866 psi88%2785 fps99%
Alliant Reloder-16ᴾ<<locked>>100%45,368 psi75%2717 fps97.2%
Alliant Reloder-17ᴾ<<locked>>100%52,460 psi87%2874 fps99.6%
Baschieri & Pellagri 106<<locked>>82%51,779 psi86%2615 fps100%
Baschieri & Pellagri 107<<locked>>90%51,576 psi86%2762 fps98.4%
Bofors RP3<<locked>>96%52,359 psi87%2782 fps99.7%
Hodgdon Benchmark<<locked>>88%53,490 psi89%2700 fps100%
Hodgdon BL-C2<<locked>>90%53,577 psi89%2792 fps100%
Hodgdon CFE223<<locked>>86%51,445 psi85%2822 fps98.8%
Hodgdon H322<<locked>>84%51,996 psi86%2713 fps100%
Hodgdon H335<<locked>>84%52,910 psi88%2740 fps100%
Hodgdon H380<<locked>>96%54,114 psi90%2792 fps98.2%
Hodgdon H4895<<locked>>90%52,388 psi87%2762 fps99.5%
Hodgdon Hybrid 100Vᴾ<<locked>>100%41,756 psi69%2612 fps97.9%
Hodgdon LEVERevolution<<locked>>94%54,447 psi90%2841 fps99.9%
Hodgdon TrailBossᴾ<<locked>>100%34,621 psi58%1663 fps100%
Hodgdon VARGET<<locked>>92%53,911 psi90%2769 fps99.6%
IMR 3031<<locked>>90%51,706 psi86%2756 fps100%
IMR 4064<<locked>>94%52,460 psi87%2730 fps98.9%
IMR 4198<<locked>>84%53,621 psi89%2644 fps100%
IMR 4831ᴾ<<locked>>100%43,410 psi72%2657 fps96.7%
IMR 4895<<locked>>94%54,157 psi90%2818 fps99.5%
IMR 8208 XBR<<locked>>88%51,300 psi85%2710 fps99.7%
Lovex D073.5<<locked>>84%51,343 psi85%2700 fps99.9%
Lovex D073.6<<locked>>90%51,053 psi85%2733 fps100%
Lovex S060<<locked>>90%52,301 psi87%2684 fps99.2%
Lovex S062<<locked>>94%51,938 psi86%2733 fps99.8%
Lovex S065ᴾ<<locked>>100%50,734 psi84%2710 fps96.7%
Norma 201<<locked>>92%54,012 psi90%2749 fps99.9%
Norma 202<<locked>>90%51,242 psi85%2713 fps100%
Norma 203B<<locked>>94%52,025 psi86%2772 fps99.2%
Norma URPᴾ<<locked>>100%45,440 psi75%2707 fps97%
Ramshot Big Game<<locked>>94%52,475 psi87%2799 fps99.2%
Ramshot TAC<<locked>>88%51,779 psi86%2717 fps97.1%
Ramshot Wild Boar<<locked>>90%54,375 psi90%2792 fps99.4%
Ramshot X-Terminator<<locked>>86%52,533 psi87%2710 fps99.1%
ReloadSwiss RS 14ᴾ<<locked>>100%34,969 psi58%1703 fps100%
ReloadSwiss RS 40<<locked>>84%51,184 psi85%2700 fps100%
ReloadSwiss RS 50<<locked>>94%51,155 psi85%2717 fps96%
ReloadSwiss RS 52<<locked>>92%52,721 psi88%2851 fps99%
ReloadSwiss RS 60<<locked>>98%52,576 psi87%2884 fps100%
ReloadSwiss RS 62ᴾ<<locked>>100%45,397 psi75%2733 fps96.8%
ReloadSwiss RS 70ᴾ<<locked>>100%46,456 psi77%2746 fps96%
Rottweil R 901<<locked>>88%52,228 psi87%2697 fps100%
Rottweil R 902<<locked>>94%54,433 psi90%2746 fps99.9%
Rottweil R 903<<locked>>98%51,866 psi86%2766 fps99.5%
Shooters World Long Rifleᴾ<<locked>>100%50,734 psi84%2710 fps96.7%
Shooters World Match Rifle<<locked>>90%51,053 psi85%2733 fps100%
Shooters World Precision<<locked>>94%51,938 psi86%2733 fps99.8%
Shooters World Tactical Rifle<<locked>>84%54,404 psi90%2717 fps99.7%
SNPE Vectan SP 10<<locked>>82%53,766 psi89%2746 fps100%
SNPE Vectan SP 11<<locked>>98%53,780 psi89%2825 fps99.3%
SNPE Vectan SP 3<<locked>>84%53,896 psi90%2697 fps100%
SNPE Vectan SP 7<<locked>>90%53,359 psi89%2749 fps97.9%
SNPE Vectan SP 9<<locked>>92%53,824 psi89%2776 fps99.3%
SNPE Vectan Tubal 3000<<locked>>90%52,852 psi88%2654 fps100%
SNPE Vectan Tubal 5000<<locked>>96%52,591 psi87%2651 fps100%
Somchem S321<<locked>>86%52,518 psi87%2746 fps99.9%
Somchem S335<<locked>>90%52,257 psi87%2657 fps100%
Somchem S341<<locked>>90%52,678 psi88%2743 fps99.2%
Somchem S355<<locked>>98%52,910 psi88%2769 fps99.5%
Somchem S365ᴾ<<locked>>100%40,640 psi68%2657 fps98.9%
Vihtavuori N130<<locked>>86%52,794 psi88%2628 fps100%
Vihtavuori N133<<locked>>90%52,794 psi88%2644 fps100%
Vihtavuori N135<<locked>>94%53,330 psi89%2717 fps100%
Vihtavuori N140<<locked>>92%51,692 psi86%2694 fps100%
Vihtavuori N150ᴾ<<locked>>100%54,230 psi90%2749 fps100%
Vihtavuori N160ᴾ<<locked>>100%47,993 psi80%2710 fps97.4%
Vihtavuori N530<<locked>>88%51,982 psi86%2713 fps99.8%
Vihtavuori N540<<locked>>94%52,953 psi88%2733 fps100%
Vihtavuori N550ᴾ<<locked>>100%47,094 psi78%2713 fps97.1%
Winchester 6.5 StaBALLᴾ<<locked>>100%49,226 psi82%2700 fps99.2%
Winchester 748<<locked>>90%54,360 psi90%2805 fps100%
Winchester StaBALL Match<<locked>>92%53,461 psi89%2782 fps99.6%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%41,452 psi69%2493 fps100%
Accurate 2460<<locked>>80%44,817 psi74%2589 fps99.9%
Accurate 2495<<locked>>80%33,982 psi56%2408 fps100%
Accurate 2520<<locked>>80%40,176 psi67%2543 fps99.4%
Accurate 4064<<locked>>80%32,155 psi53%2388 fps98.7%
Accurate 4350<<locked>>96%39,392 psi65%2602 fps95.5%
Accurate LT-30<<locked>>80%49,719 psi83%2572 fps100%
Accurate LT-32<<locked>>80%50,096 psi83%2595 fps100%
ADI AR 2206H<<locked>>80%38,174 psi63%2497 fps96.5%
ADI AR 2208<<locked>>84%36,622 psi61%2448 fps95.1%
ADI AR 2219<<locked>>80%49,748 psi83%2680 fps100%
ADI Benchmark 8208<<locked>>80%40,176 psi67%2513 fps98.2%
Alliant AR-Comp<<locked>>80%39,044 psi65%2520 fps100%
Alliant Power Pro 1200-R<<locked>>80%46,398 psi77%2707 fps98.9%
Alliant Power Pro 2000-MR40.1 gr84%39,131 psi65%2612 fps95.5%
Alliant Reloder- TS 15.5<<locked>>80%31,488 psi52%2369 fps95.3%
Alliant Reloder-10x<<locked>>80%46,818 psi78%2589 fps100%
Alliant Reloder-15<<locked>>82%36,129 psi60%2474 fps95.2%
Alliant Reloder-16<<locked>>96%40,321 psi67%2612 fps95.6%
Alliant Reloder-17<<locked>>88%35,418 psi59%2533 fps95.8%
Baschieri & Pellagri 106<<locked>>80%48,791 psi81%2572 fps100%
Baschieri & Pellagri 107<<locked>>82%39,320 psi65%2539 fps95.6%
Bofors RP3<<locked>>80%30,574 psi51%2359 fps95%
Hodgdon Benchmark<<locked>>80%42,090 psi70%2510 fps99%
Hodgdon BL-C2<<locked>>80%38,116 psi63%2523 fps98.3%
Hodgdon CFE223<<locked>>80%41,814 psi69%2651 fps97%
Hodgdon H322<<locked>>80%45,556 psi76%2618 fps100%
Hodgdon H335<<locked>>80%46,311 psi77%2638 fps100%
Hodgdon H380<<locked>>88%41,495 psi69%2575 fps95.4%
Hodgdon H4895<<locked>>80%38,421 psi64%2510 fps97.2%
Hodgdon Hybrid 100V<<locked>>94%34,693 psi58%2461 fps95.7%
Hodgdon LEVERevolution<<locked>>80%34,098 psi57%2464 fps96.3%
Hodgdon TrailBoss<<locked>>80%25,759 psi43%1486 fps100%
Hodgdon VARGET<<locked>>80%36,811 psi61%2461 fps96.6%
IMR 3031<<locked>>80%37,043 psi62%2513 fps100%
IMR 4064<<locked>>82%36,245 psi60%2434 fps95.3%
IMR 4198<<locked>>80%47,369 psi79%2556 fps100%
IMR 4831<<locked>>96%38,101 psi63%2552 fps95.1%
IMR 4895<<locked>>80%34,853 psi58%2457 fps95.5%
IMR 8208 XBR<<locked>>80%40,176 psi67%2513 fps98.2%
Lovex D073.5<<locked>>80%44,875 psi75%2595 fps99.5%
Lovex D073.6<<locked>>80%36,216 psi60%2474 fps98.8%
Lovex S060<<locked>>80%38,899 psi65%2448 fps96.7%
Lovex S062<<locked>>80%33,721 psi56%2388 fps96.6%
Lovex S065<<locked>>96%45,078 psi75%2615 fps95.4%
Norma 201<<locked>>80%37,405 psi62%2457 fps97.7%
Norma 202<<locked>>80%37,391 psi62%2474 fps99.4%
Norma 203B<<locked>>82%35,462 psi59%2464 fps95.7%
Norma URP<<locked>>96%40,234 psi67%2605 fps95.5%
Ramshot Big Game<<locked>>82%34,954 psi58%2467 fps95.1%
Ramshot TAC<<locked>>84%45,542 psi76%2612 fps95.7%
Ramshot Wild Boar<<locked>>80%38,943 psi65%2523 fps96.7%
Ramshot X-Terminator<<locked>>80%43,468 psi72%2559 fps97.6%
ReloadSwiss RS 14<<locked>>80%25,889 psi43%1519 fps100%
ReloadSwiss RS 40<<locked>>80%45,107 psi75%2602 fps99.7%
ReloadSwiss RS 50<<locked>>92%48,080 psi80%2664 fps95.3%
ReloadSwiss RS 5237.9 gr82%37,260 psi62%2562 fps95.6%
ReloadSwiss RS 6037.6 gr80%29,037 psi48%2369 fps95.5%
ReloadSwiss RS 62<<locked>>96%39,610 psi66%2618 fps95%
ReloadSwiss RS 70<<locked>>98%43,627 psi72%2690 fps95.1%
Rottweil R 901<<locked>>80%41,191 psi68%2510 fps99.7%
Rottweil R 902<<locked>>80%35,607 psi59%2411 fps97.1%
Rottweil R 903<<locked>>84%32,880 psi55%2408 fps95.6%
Shooters World Long Rifle<<locked>>96%45,078 psi75%2615 fps95.4%
Shooters World Match Rifle<<locked>>80%36,216 psi60%2474 fps98.8%
Shooters World Precision<<locked>>80%33,721 psi56%2388 fps96.6%
Shooters World Tactical Rifle<<locked>>80%47,558 psi79%2612 fps99.1%
SNPE Vectan SP 10<<locked>>80%50,227 psi83%2694 fps100%
SNPE Vectan SP 11<<locked>>84%34,389 psi57%2461 fps95%
SNPE Vectan SP 3<<locked>>80%47,601 psi79%2608 fps100%
SNPE Vectan SP 7<<locked>>84%43,424 psi72%2582 fps95.8%
SNPE Vectan SP 9<<locked>>80%36,506 psi61%2461 fps95.9%
SNPE Vectan Tubal 3000<<locked>>80%38,972 psi65%2425 fps99.5%
SNPE Vectan Tubal 5000<<locked>>80%31,952 psi53%2293 fps99.1%
Somchem S321<<locked>>80%42,931 psi71%2589 fps99%
Somchem S335<<locked>>80%38,551 psi64%2431 fps99.8%
Somchem S341<<locked>>80%37,608 psi62%2477 fps96.2%
Somchem S355<<locked>>84%34,040 psi57%2421 fps95.8%
Somchem S365<<locked>>90%29,573 psi49%2388 fps95%
Vihtavuori N130<<locked>>80%44,222 psi73%2500 fps100%
Vihtavuori N133<<locked>>80%39,059 psi65%2428 fps100%
Vihtavuori N135<<locked>>80%34,360 psi57%2408 fps100%
Vihtavuori N140<<locked>>80%35,346 psi59%2411 fps99.3%
Vihtavuori N150<<locked>>80%28,529 psi47%2267 fps95.1%
Vihtavuori N160<<locked>>94%39,537 psi66%2552 fps95.2%
Vihtavuori N530<<locked>>80%39,769 psi66%2503 fps98.2%
Vihtavuori N540<<locked>>80%33,808 psi56%2392 fps98.6%
Vihtavuori N550<<locked>>96%41,408 psi69%2612 fps95.6%
Winchester 6.5 StaBALL<<locked>>88%33,185 psi55%2382 fps95%
Winchester 748<<locked>>80%38,711 psi64%2543 fps98.7%
Winchester StaBALL Match<<locked>>80%35,665 psi59%2464 fps96.4%

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 109 powders for 7 mm-08 Rem. loaded with the .284 | 140gr | Sierra SBT GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,884 fps. Accurate 4350 gives the best case fill at 100 %, and 109 of the 109 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (415 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 52, ReloadSwiss RS 60 rank at the top here: for 7 mm-08 Rem. with the .284 | 140gr | Sierra SBT GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Alliant Reloder-26 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.

← All load data