Load data for 7 mm-08 Rem. + .284 | 140gr | Sierra 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:1:10.0

Load data in caliber 7 mm-08 Rem. with .284 | 140gr | Sierra 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, Hodgdon CFE223 and ReloadSwiss RS 52.

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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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>>90%53,853 psi89%2664 fps100%
Accurate 2200<<locked>>82%54,172 psi90%2749 fps98.6%
Accurate 2460<<locked>>86%52,330 psi87%2684 fps100%
Accurate 2495<<locked>>96%53,940 psi90%2717 fps100%
Accurate 2520<<locked>>90%51,445 psi85%2720 fps100%
Accurate 2520<<locked>>90%51,445 psi85%2720 fps100%
Accurate 4064<<locked>>98%53,359 psi89%2749 fps100%
Accurate 4350ᴾ<<locked>>100%42,264 psi70%2638 fps95.9%
Accurate LT-30<<locked>>84%54,273 psi90%2615 fps100%
Accurate LT-32<<locked>>82%51,140 psi85%2585 fps100%
ADI AR 2206H<<locked>>92%52,707 psi88%2740 fps99%
ADI AR 2208<<locked>>98%53,461 psi89%2730 fps98.6%
ADI AR 2219<<locked>>84%54,433 psi90%2730 fps100%
ADI Benchmark 8208<<locked>>90%52,011 psi86%2697 fps99.6%
Alliant AR-Comp<<locked>>90%51,401 psi85%2690 fps100%
Alliant Power Pro 1200-R<<locked>>86%53,301 psi89%2799 fps99.5%
Alliant Power Pro 2000-MR<<locked>>94%52,141 psi87%2838 fps98.4%
Alliant Reloder- TS 15.5<<locked>>98%52,634 psi87%2756 fps99.5%
Alliant Reloder-10x<<locked>>86%53,911 psi90%2674 fps100%
Alliant Reloder-15<<locked>>96%53,519 psi89%2772 fps98.8%
Alliant Reloder-16ᴾ<<locked>>100%43,221 psi72%2648 fps96.1%
Alliant Reloder-17ᴾ<<locked>>100%49,647 psi82%2799 fps99.1%
Baschieri & Pellagri 106<<locked>>84%53,011 psi88%2608 fps100%
Baschieri & Pellagri 107<<locked>>92%52,315 psi87%2749 fps98.1%
Bofors RP3<<locked>>98%52,678 psi88%2766 fps99.6%
Hodgdon Benchmark<<locked>>88%51,314 psi85%2644 fps99.8%
Hodgdon BL-C2<<locked>>92%53,882 psi90%2776 fps99.9%
Hodgdon CFE223<<locked>>88%52,315 psi87%2815 fps98.7%
Hodgdon H322<<locked>>86%52,808 psi88%2707 fps100%
Hodgdon H335<<locked>>86%53,679 psi89%2730 fps100%
Hodgdon H380<<locked>>96%51,082 psi85%2723 fps97.3%
Hodgdon H4895<<locked>>92%53,185 psi88%2753 fps99.4%
Hodgdon Hybrid 100Vᴾ<<locked>>100%39,305 psi65%2539 fps96.8%
Hodgdon LEVERevolution<<locked>>94%51,271 psi85%2776 fps99.5%
Hodgdon TrailBossᴾ<<locked>>100%34,505 psi57%1640 fps100%
Hodgdon VARGET<<locked>>92%51,474 psi86%2707 fps99.2%
IMR 3031<<locked>>92%52,098 psi87%2746 fps100%
IMR 4064<<locked>>96%53,098 psi88%2717 fps98.7%
IMR 4198<<locked>>84%51,358 psi85%2595 fps100%
IMR 4895<<locked>>94%51,271 psi85%2753 fps98.9%
IMR 8208 XBR<<locked>>90%52,011 psi86%2697 fps99.6%
Lovex D073.4<<locked>>84%51,314 psi85%2667 fps99.8%
Lovex D073.5<<locked>>86%52,069 psi87%2690 fps99.9%
Lovex D073.6<<locked>>92%51,445 psi85%2720 fps100%
Lovex S060<<locked>>92%53,171 psi88%2674 fps99%
Lovex S062<<locked>>96%52,431 psi87%2717 fps99.7%
Lovex S065ᴾ<<locked>>100%48,356 psi80%2648 fps95.7%
Norma 200<<locked>>82%53,824 psi89%2648 fps100%
Norma 201<<locked>>92%51,358 psi85%2687 fps99.6%
Norma 202<<locked>>92%51,924 psi86%2703 fps100%
Norma 203B<<locked>>96%52,576 psi87%2762 fps99.1%
Norma URPᴾ<<locked>>100%42,859 psi71%2635 fps95.8%
Ramshot Big Game<<locked>>96%53,069 psi88%2785 fps99%
Ramshot TAC<<locked>>90%52,576 psi87%2707 fps96.9%
Ramshot Wild Boar<<locked>>90%51,692 psi86%2730 fps98.9%
Ramshot X-Terminator<<locked>>88%53,534 psi89%2703 fps99%
ReloadSwiss RS 14ᴾ<<locked>>100%34,519 psi57%1673 fps100%
ReloadSwiss RS 40<<locked>>86%52,156 psi87%2694 fps100%
ReloadSwiss RS 52<<locked>>94%52,823 psi88%2828 fps98.7%
ReloadSwiss RS 60ᴾ<<locked>>100%53,113 psi88%2867 fps100%
Rottweil R 901<<locked>>90%52,591 psi87%2680 fps100%
Rottweil R 902<<locked>>94%51,750 psi86%2687 fps99.6%
Rottweil R 903ᴾ<<locked>>100%52,156 psi87%2749 fps99.4%
Shooters World Long Rifleᴾ<<locked>>100%48,356 psi80%2648 fps95.7%
Shooters World Match Rifle<<locked>>92%51,445 psi85%2720 fps100%
Shooters World Precision<<locked>>96%52,431 psi87%2717 fps99.7%
Shooters World Tactical Rifle<<locked>>84%51,866 psi86%2657 fps99.4%
SNPE Vectan SP 10<<locked>>82%51,024 psi85%2684 fps100%
SNPE Vectan SP 11ᴾ<<locked>>100%54,389 psi90%2812 fps99.2%
SNPE Vectan SP 3<<locked>>84%51,314 psi85%2644 fps100%
SNPE Vectan SP 7<<locked>>92%53,925 psi90%2730 fps97.6%
SNPE Vectan SP 9<<locked>>94%54,244 psi90%2756 fps99.2%
SNPE Vectan Tubal 3000<<locked>>92%54,085 psi90%2648 fps100%
SNPE Vectan Tubal 5000<<locked>>98%53,272 psi89%2641 fps100%
Somchem S321<<locked>>88%53,069 psi88%2733 fps99.8%
Somchem S335<<locked>>92%52,634 psi87%2644 fps100%
Somchem S341<<locked>>92%53,577 psi89%2733 fps99%
Somchem S355ᴾ<<locked>>100%53,272 psi89%2753 fps99.4%
Somchem S365ᴾ<<locked>>100%38,290 psi64%2589 fps98%
Vihtavuori N130<<locked>>88%53,606 psi89%2618 fps100%
Vihtavuori N133<<locked>>92%53,867 psi89%2638 fps100%
Vihtavuori N135<<locked>>96%53,983 psi90%2707 fps100%
Vihtavuori N140<<locked>>94%52,127 psi87%2677 fps100%
Vihtavuori N150ᴾ<<locked>>100%51,198 psi85%2687 fps99.8%
Vihtavuori N160ᴾ<<locked>>100%45,368 psi75%2641 fps96.4%
Vihtavuori N530<<locked>>90%52,823 psi88%2703 fps99.7%
Vihtavuori N540<<locked>>96%53,780 psi89%2723 fps100%
Vihtavuori N550ᴾ<<locked>>100%44,135 psi73%2641 fps95.9%
Winchester 6.5 StaBALLᴾ<<locked>>100%46,601 psi77%2628 fps98.5%
Winchester 748<<locked>>90%51,329 psi85%2743 fps99.9%
Winchester StaBALL Match<<locked>>94%53,882 psi90%2769 fps99.5%

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%39,494 psi66%2441 fps100%
Accurate 2200<<locked>>80%50,604 psi84%2694 fps98.1%
Accurate 2460<<locked>>80%42,757 psi71%2536 fps99.7%
Accurate 2495<<locked>>80%31,792 psi53%2346 fps99.8%
Accurate 2520<<locked>>80%36,405 psi60%2464 fps98.6%
Accurate 2520<<locked>>80%36,405 psi60%2464 fps98.6%
Accurate 4064<<locked>>80%30,110 psi50%2323 fps97.9%
Accurate 4350<<locked>>98%39,305 psi65%2582 fps95.1%
Accurate LT-30<<locked>>80%47,848 psi79%2523 fps100%
Accurate LT-32<<locked>>80%48,225 psi80%2543 fps99.9%
ADI AR 2206H<<locked>>80%36,274 psi60%2438 fps95.5%
ADI AR 2208<<locked>>88%39,581 psi66%2490 fps95.7%
ADI AR 2219<<locked>>80%47,442 psi79%2628 fps100%
ADI Benchmark 8208<<locked>>80%38,218 psi63%2454 fps97.4%
Alliant AR-Comp<<locked>>80%36,869 psi61%2467 fps100%
Alliant Power Pro 1200-R<<locked>>80%43,961 psi73%2641 fps98.2%
Alliant Power Pro 2000-MR39 gr86%39,668 psi66%2595 fps95.1%
Alliant Reloder- TS 15.5<<locked>>82%31,734 psi53%2359 fps95%
Alliant Reloder-10x<<locked>>80%44,947 psi75%2543 fps100%
Alliant Reloder-15<<locked>>84%36,666 psi61%2467 fps95%
Alliant Reloder-16<<locked>>98%40,785 psi68%2598 fps95.2%
Alliant Reloder-17<<locked>>90%35,694 psi59%2516 fps95.4%
Baschieri & Pellagri 106<<locked>>80%46,775 psi78%2520 fps100%
Baschieri & Pellagri 107<<locked>>84%39,958 psi66%2533 fps95.3%
Bofors RP3<<locked>>84%33,083 psi55%2405 fps95.7%
Hodgdon Benchmark<<locked>>80%40,437 psi67%2457 fps98.4%
Hodgdon BL-C2<<locked>>80%35,984 psi60%2461 fps97.5%
Hodgdon CFE22337.2 gr80%39,726 psi66%2585 fps95.9%
Hodgdon H322<<locked>>80%43,265 psi72%2559 fps100%
Hodgdon H335<<locked>>80%43,990 psi73%2579 fps99.9%
Hodgdon H380<<locked>>90%41,989 psi70%2566 fps95.1%
Hodgdon H4895<<locked>>80%36,463 psi61%2448 fps96.2%
Hodgdon Hybrid 100V<<locked>>96%34,882 psi58%2441 fps95.2%
Hodgdon LEVERevolution<<locked>>80%32,474 psi54%2402 fps95.2%
Hodgdon TrailBoss<<locked>>80%25,541 psi42%1463 fps100%
Hodgdon VARGET<<locked>>80%35,215 psi59%2405 fps95.7%
IMR 3031<<locked>>80%35,012 psi58%2454 fps99.8%
IMR 4064<<locked>>84%36,550 psi61%2418 fps95%
IMR 4198<<locked>>80%45,745 psi76%2513 fps100%
IMR 4895<<locked>>82%35,012 psi58%2441 fps95.2%
IMR 8208 XBR<<locked>>80%38,218 psi63%2454 fps97.4%
Lovex D073.4<<locked>>80%44,411 psi74%2559 fps99.3%
Lovex D073.5<<locked>>80%42,583 psi71%2536 fps99.1%
Lovex D073.6<<locked>>80%34,200 psi57%2415 fps98.1%
Lovex S060<<locked>>80%37,304 psi62%2392 fps95.8%
Lovex S062<<locked>>80%32,039 psi53%2333 fps95.6%
Lovex S065<<locked>>98%45,324 psi75%2595 fps95%
Norma 200<<locked>>80%50,343 psi84%2598 fps100%
Norma 201<<locked>>80%35,404 psi59%2395 fps96.8%
Norma 202<<locked>>80%35,375 psi59%2411 fps98.8%
Norma 203B<<locked>>84%35,998 psi60%2457 fps95.5%
Norma URP<<locked>>98%40,350 psi67%2585 fps95.1%
Ramshot Big Game<<locked>>86%37,855 psi63%2513 fps95.7%
Ramshot TAC<<locked>>86%46,311 psi77%2602 fps95.4%
Ramshot Wild Boar<<locked>>80%36,956 psi61%2464 fps95.6%
Ramshot X-Terminator<<locked>>80%41,481 psi69%2500 fps96.8%
ReloadSwiss RS 14<<locked>>80%25,643 psi43%1496 fps100%
ReloadSwiss RS 40<<locked>>80%42,699 psi71%2539 fps99.3%
ReloadSwiss RS 5237 gr84%37,884 psi63%2559 fps95.4%
ReloadSwiss RS 60<<locked>>82%29,385 psi49%2356 fps95.1%
Rottweil R 901<<locked>>80%39,262 psi65%2454 fps99.3%
Rottweil R 902<<locked>>80%33,910 psi56%2352 fps96.2%
Rottweil R 903<<locked>>86%32,982 psi55%2395 fps95.3%
Shooters World Long Rifle<<locked>>98%45,324 psi75%2595 fps95%
Shooters World Match Rifle<<locked>>80%34,200 psi57%2415 fps98.1%
Shooters World Precision<<locked>>80%32,039 psi53%2333 fps95.6%
Shooters World Tactical Rifle<<locked>>80%45,310 psi75%2552 fps98.6%
SNPE Vectan SP 10<<locked>>80%47,819 psi79%2638 fps100%
SNPE Vectan SP 11<<locked>>88%36,898 psi61%2500 fps95.5%
SNPE Vectan SP 3<<locked>>80%45,339 psi75%2552 fps100%
SNPE Vectan SP 7<<locked>>86%44,063 psi73%2572 fps95.5%
SNPE Vectan SP 9<<locked>>82%37,144 psi62%2454 fps95.7%
SNPE Vectan Tubal 3000<<locked>>80%37,173 psi62%2372 fps99.1%
SNPE Vectan Tubal 5000<<locked>>80%30,385 psi50%2241 fps98.4%
Somchem S321<<locked>>80%40,814 psi68%2530 fps98.3%
Somchem S335<<locked>>80%36,579 psi61%2375 fps99.5%
Somchem S341<<locked>>80%35,621 psi59%2415 fps95.1%
Somchem S355<<locked>>86%34,243 psi57%2408 fps95.4%
Somchem S365<<locked>>94%31,633 psi53%2425 fps95.6%
Vihtavuori N130<<locked>>80%42,206 psi70%2451 fps100%
Vihtavuori N133<<locked>>80%37,202 psi62%2379 fps100%
Vihtavuori N135<<locked>>80%32,401 psi54%2349 fps99.8%
Vihtavuori N140<<locked>>80%33,431 psi56%2352 fps98.7%
Vihtavuori N150<<locked>>84%30,647 psi51%2303 fps95.7%
Vihtavuori N160<<locked>>98%42,366 psi70%2585 fps95.5%
Vihtavuori N530<<locked>>80%37,855 psi63%2444 fps97.4%
Vihtavuori N540<<locked>>80%32,111 psi53%2336 fps97.9%
Vihtavuori N550<<locked>>98%41,626 psi69%2595 fps95.2%
Winchester 6.5 StaBALL<<locked>>92%36,056 psi60%2425 fps95.6%
Winchester 748<<locked>>80%36,796 psi61%2484 fps98%
Winchester StaBALL Match<<locked>>80%33,692 psi56%2398 fps95.3%

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 111 powders for 7 mm-08 Rem. loaded with the .284 | 140gr | Sierra GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,867 fps. Accurate 4350 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (415 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.0 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, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for 7 mm-08 Rem. with the .284 | 140gr | Sierra GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 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.

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