Load data for 6.5 mm Rem. Mag. + .264 | 140gr | Sierra GameKing

6.5 mm Rem. Mag. cartridge drawing
Sierra logo

Load Specifications

Bullet Manufacturer:Sierra
Bullet Weight:140 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Case Length (l3):2.17"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:68 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:26"
Max. allowed Pressure:63,091 psi
Recommended Twist Rate:1:10.0

Load data in caliber 6.5 mm Rem. Mag. with .264 | 140gr | Sierra GameKing bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Accurate MAGPRO.

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: 26"

PowderChargeFRMaxP%V(0)z
Accurate 2700<<locked>>82%56,507 psi90%2802 fps99.7%
Accurate 3100<<locked>>98%55,680 psi88%2861 fps100%
Accurate 4064<<locked>>82%56,420 psi89%2776 fps100%
Accurate 4350<<locked>>88%53,751 psi85%2844 fps100%
Accurate High Country<<locked>>96%57,029 psi90%3015 fps99.1%
Accurate MAGPRO<<locked>>96%53,983 psi86%2953 fps97.7%
ADI AR 2208<<locked>>84%55,912 psi89%2808 fps100%
ADI AR 2209<<locked>>94%54,491 psi86%2897 fps99.3%
ADI AR 2213<<locked>>98%55,999 psi89%2956 fps98.7%
ADI AR 2217ᴾ<<locked>>100%43,656 psi69%2726 fps96.4%
ADI AR 2225ᴾ<<locked>>100%38,624 psi61%2690 fps98.2%
Alliant Power Pro Varmint<<locked>>94%54,795 psi87%2894 fps99.3%
Alliant Power Pro Varmint<<locked>>94%54,795 psi87%2894 fps99.3%
Alliant Reloder- TS 15.5<<locked>>84%57,029 psi90%2831 fps100%
Alliant Reloder-15<<locked>>82%56,927 psi90%2851 fps100%
Alliant Reloder-16<<locked>>90%54,447 psi86%2897 fps100%
Alliant Reloder-17<<locked>>86%55,695 psi88%2917 fps100%
Alliant Reloder-19<<locked>>94%54,085 psi86%2887 fps99.3%
Alliant Reloder-22<<locked>>98%55,390 psi88%2953 fps99.5%
Alliant Reloder-23ᴾ<<locked>>100%56,115 psi89%2920 fps100%
Alliant Reloder-25ᴾ<<locked>>100%48,588 psi77%2874 fps100%
Alliant Reloder-26<<locked>>96%56,449 psi89%3015 fps100%
Bofors RP15ᴾ<<locked>>100%54,244 psi86%2933 fps99.3%
Bofors RP3<<locked>>82%54,259 psi86%2799 fps100%
Bofors RP30ᴾ<<locked>>100%44,454 psi70%2802 fps97.3%
Bofors RP5<<locked>>98%55,390 psi88%2953 fps99.5%
Bofors RP7<<locked>>88%56,942 psi90%2844 fps99.8%
Hodgdon H1000ᴾ<<locked>>100%47,964 psi76%2815 fps98.1%
Hodgdon H380<<locked>>82%54,476 psi86%2818 fps100%
Hodgdon H414<<locked>>88%55,811 psi88%2900 fps99.9%
Hodgdon H4350<<locked>>86%55,085 psi87%2854 fps99.5%
Hodgdon H4831<<locked>>96%55,985 psi89%2894 fps98.2%
Hodgdon H4831 SC<<locked>>96%54,984 psi87%2881 fps98%
Hodgdon Hybrid 100V<<locked>>92%55,042 psi87%2822 fps100%
Hodgdon Retumboᴾ<<locked>>100%47,587 psi75%2927 fps99.3%
Hodgdon Superformance<<locked>>88%55,840 psi89%2936 fps99.9%
Hodgdon TrailBossᴾ<<locked>>100%36,782 psi58%1755 fps100%
IMR 4064<<locked>>82%55,259 psi88%2789 fps100%
IMR 4350<<locked>>90%54,636 psi87%2828 fps99.7%
IMR 4451 Enduron<<locked>>86%55,230 psi88%2822 fps99.9%
IMR 4831<<locked>>90%54,230 psi86%2838 fps100%
IMR 4955 Enduron<<locked>>94%53,795 psi85%2825 fps97.9%
IMR 7828 SSC<<locked>>98%53,388 psi85%2930 fps98.5%
Lovex S062<<locked>>82%55,593 psi88%2779 fps100%
Lovex S065<<locked>>88%55,550 psi88%2818 fps100%
Lovex S070<<locked>>90%56,971 psi90%2864 fps100%
Lovex S071ᴾ<<locked>>100%49,516 psi78%2769 fps99.9%
Norma 203B<<locked>>82%56,275 psi89%2838 fps100%
Norma 204<<locked>>90%55,492 psi88%2884 fps99.3%
Norma MRP<<locked>>96%55,114 psi87%2976 fps100%
Norma URP<<locked>>90%56,028 psi89%2884 fps100%
Ramshot Grand<<locked>>98%53,751 psi85%2946 fps98.8%
Ramshot Hunter<<locked>>90%54,694 psi87%2887 fps100%
Ramshot Magnumᴾ<<locked>>100%51,851 psi82%2881 fps99.6%
ReloadSwiss RS 14ᴾ<<locked>>100%37,391 psi59%1795 fps100%
ReloadSwiss RS 50<<locked>>82%54,186 psi86%2805 fps100%
ReloadSwiss RS 60<<locked>>84%55,288 psi88%2907 fps100%
ReloadSwiss RS 62<<locked>>88%53,577 psi85%2867 fps100%
ReloadSwiss RS 70<<locked>>90%55,637 psi88%2953 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%47,558 psi75%2917 fps99.8%
Rottweil R 903<<locked>>84%54,476 psi86%2795 fps100%
Rottweil R 904<<locked>>94%56,202 psi89%2867 fps98.7%
Rottweil R 905<<locked>>96%57,058 psi90%2930 fps99.6%
Rottweil R 907<<locked>>88%56,942 psi90%2844 fps99.8%
Shooters World Long Rifle<<locked>>88%55,550 psi88%2818 fps100%
Shooters World Precision<<locked>>82%55,593 psi88%2779 fps100%
Shooters World SW4350<<locked>>90%56,971 psi90%2864 fps100%
SNPE Vectan SP 11<<locked>>84%55,927 psi89%2854 fps100%
SNPE Vectan Tubal 5000<<locked>>84%54,926 psi87%2671 fps100%
SNPE Vectan Tubal 7000<<locked>>88%54,839 psi87%2769 fps99.9%
SNPE Vectan Tubal 8000<<locked>>96%56,579 psi90%2927 fps99.6%
Somchem S355<<locked>>84%54,273 psi86%2789 fps100%
Somchem S361<<locked>>92%54,215 psi86%2808 fps97.8%
Somchem S365<<locked>>92%55,680 psi88%2881 fps100%
Somchem S385<<locked>>94%54,143 psi86%2851 fps99.7%
Vihtavuori N150<<locked>>86%55,564 psi88%2762 fps100%
Vihtavuori N160<<locked>>88%54,317 psi86%2822 fps100%
Vihtavuori N165ᴾ<<locked>>100%57,029 psi90%2877 fps99.7%
Vihtavuori N540<<locked>>82%56,275 psi89%2759 fps100%
Vihtavuori N550<<locked>>88%53,621 psi85%2831 fps100%
Vihtavuori N555<<locked>>96%55,100 psi87%2900 fps100%
Vihtavuori N560<<locked>>96%55,158 psi87%2969 fps98.4%
Vihtavuori N565ᴾ<<locked>>100%50,821 psi81%2884 fps97.9%
Winchester 6.5 StaBALL<<locked>>88%53,853 psi85%2785 fps100%
Winchester 760<<locked>>88%55,811 psi88%2900 fps99.9%
Winchester StaBALL HDᴾ<<locked>>100%52,475 psi83%3005 fps100%
Winchester Supreme 780<<locked>>96%53,954 psi86%2841 fps99.2%

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

Start Load - Barrel Length: 26"

PowderChargeFRMaxP%V(0)z
Accurate 2700<<locked>>80%53,069 psi84%2749 fps99.4%
Accurate 3100<<locked>>80%30,385 psi48%2382 fps96.1%
Accurate 4064<<locked>>80%52,910 psi84%2726 fps100%
Accurate 4350<<locked>>80%41,089 psi65%2635 fps99.8%
Accurate High Country<<locked>>86%40,263 psi64%2713 fps95.7%
Accurate MAGPRO52.2 gr90%43,613 psi69%2769 fps95.2%
ADI AR 2208<<locked>>80%49,501 psi78%2713 fps100%
ADI AR 2209<<locked>>82%36,840 psi58%2559 fps95.4%
ADI AR 2213<<locked>>90%42,656 psi68%2717 fps95.9%
ADI AR 2217<<locked>>98%40,814 psi65%2667 fps95.4%
ADI AR 2225<<locked>>94%31,981 psi51%2513 fps95.3%
Alliant Power Pro Varmint<<locked>>82%36,985 psi59%2559 fps95.5%
Alliant Power Pro Varmint<<locked>>82%36,985 psi59%2559 fps95.5%
Alliant Reloder- TS 15.5<<locked>>80%50,169 psi80%2733 fps100%
Alliant Reloder-15<<locked>>80%53,751 psi85%2805 fps100%
Alliant Reloder-16<<locked>>80%39,465 psi63%2638 fps99.8%
Alliant Reloder-17<<locked>>80%45,194 psi72%2756 fps100%
Alliant Reloder-19<<locked>>82%36,637 psi58%2556 fps95.5%
Alliant Reloder-22<<locked>>86%36,941 psi59%2605 fps95.8%
Alliant Reloder-23<<locked>>80%29,196 psi46%2411 fps98.9%
Alliant Reloder-25<<locked>>84%29,138 psi46%2425 fps96%
Alliant Reloder-26<<locked>>80%31,314 psi50%2530 fps97.9%
Bofors RP15<<locked>>88%36,680 psi58%2598 fps95.5%
Bofors RP3<<locked>>80%50,807 psi81%2746 fps100%
Bofors RP30<<locked>>96%38,914 psi62%2684 fps95.6%
Bofors RP5<<locked>>86%36,941 psi59%2605 fps95.8%
Bofors RP7<<locked>>80%44,585 psi71%2641 fps98.5%
Hodgdon H1000<<locked>>94%39,189 psi62%2635 fps95.6%
Hodgdon H380<<locked>>80%51,082 psi81%2766 fps100%
Hodgdon H414<<locked>>80%42,772 psi68%2677 fps98.7%
Hodgdon H4350<<locked>>80%45,469 psi72%2690 fps98.1%
Hodgdon H4831<<locked>>88%42,902 psi68%2667 fps95.3%
Hodgdon H4831 SC<<locked>>88%41,887 psi66%2648 fps95%
Hodgdon Hybrid 100V<<locked>>80%37,072 psi59%2526 fps100%
Hodgdon Retumbo<<locked>>90%34,447 psi55%2615 fps95.1%
Hodgdon Superformance<<locked>>80%41,698 psi66%2694 fps98.3%
Hodgdon TrailBoss<<locked>>80%27,470 psi44%1568 fps100%
IMR 4064<<locked>>80%52,112 psi83%2743 fps100%
IMR 4350<<locked>>80%39,972 psi63%2569 fps97.5%
IMR 4451 Enduron<<locked>>80%45,730 psi72%2661 fps99%
IMR 4831<<locked>>80%39,291 psi62%2582 fps99.7%
IMR 4955 Enduron<<locked>>86%42,018 psi67%2612 fps95.2%
IMR 7828 SSC<<locked>>90%40,872 psi65%2690 fps95.4%
Lovex S062<<locked>>80%52,489 psi83%2736 fps100%
Lovex S065<<locked>>80%43,395 psi69%2615 fps99.5%
Lovex S070<<locked>>80%41,742 psi66%2605 fps98.6%
Lovex S071<<locked>>84%29,631 psi47%2362 fps95.7%
Norma 203B<<locked>>80%53,113 psi84%2792 fps100%
Norma 204<<locked>>80%39,668 psi63%2602 fps96.2%
Norma MRP45.6 gr80%31,633 psi50%2500 fps95.1%
Norma URP<<locked>>80%40,524 psi64%2621 fps99.7%
Ramshot Grand<<locked>>90%40,524 psi64%2697 fps95.7%
Ramshot Hunter<<locked>>80%39,349 psi62%2615 fps98.6%
Ramshot Magnum<<locked>>88%33,634 psi53%2520 fps95.2%
ReloadSwiss RS 14<<locked>>80%28,079 psi45%1608 fps100%
ReloadSwiss RS 50<<locked>>80%50,894 psi81%2753 fps99.8%
ReloadSwiss RS 60<<locked>>80%47,935 psi76%2799 fps100%
ReloadSwiss RS 62<<locked>>80%40,640 psi64%2648 fps99.7%
ReloadSwiss RS 70<<locked>>80%39,247 psi62%2664 fps99.5%
ReloadSwiss RS 76<<locked>>90%33,649 psi53%2595 fps96.1%
Rottweil R 903<<locked>>80%48,037 psi76%2700 fps100%
Rottweil R 904<<locked>>84%40,872 psi65%2595 fps95.5%
Rottweil R 905<<locked>>82%35,868 psi57%2539 fps95.4%
Rottweil R 907<<locked>>80%44,585 psi71%2641 fps98.5%
Shooters World Long Rifle<<locked>>80%43,395 psi69%2615 fps99.5%
Shooters World Precision<<locked>>80%52,489 psi83%2736 fps100%
Shooters World SW4350<<locked>>80%41,742 psi66%2605 fps98.6%
SNPE Vectan SP 11<<locked>>80%49,197 psi78%2756 fps100%
SNPE Vectan Tubal 5000<<locked>>80%48,776 psi77%2589 fps100%
SNPE Vectan Tubal 7000<<locked>>80%42,583 psi67%2566 fps98.6%
SNPE Vectan Tubal 8000<<locked>>82%35,534 psi56%2533 fps95.3%
Somchem S355<<locked>>80%48,008 psi76%2694 fps100%
Somchem S361<<locked>>86%44,425 psi70%2641 fps95.7%
Somchem S365<<locked>>80%37,072 psi59%2579 fps100%
Somchem S385<<locked>>80%34,127 psi54%2467 fps95.7%
Vihtavuori N150<<locked>>80%45,992 psi73%2625 fps100%
Vihtavuori N160<<locked>>80%42,032 psi67%2618 fps99.8%
Vihtavuori N165<<locked>>84%33,562 psi53%2451 fps95%
Vihtavuori N540<<locked>>80%52,866 psi84%2713 fps100%
Vihtavuori N550<<locked>>80%41,292 psi65%2621 fps99.7%
Vihtavuori N555<<locked>>80%32,561 psi52%2484 fps98.9%
Vihtavuori N56050.1 gr88%41,887 psi66%2726 fps95.3%
Vihtavuori N565<<locked>>94%41,336 psi66%2707 fps95.5%
Winchester 6.5 StaBALL<<locked>>80%40,915 psi65%2582 fps100%
Winchester 760<<locked>>80%42,772 psi68%2677 fps98.7%
Winchester StaBALL HD<<locked>>80%25,846 psi41%2408 fps98.8%
Winchester Supreme 780<<locked>>84%35,679 psi57%2507 fps95.1%

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 87 powders for 6.5 mm Rem. Mag. loaded with the .264 | 140gr | Sierra GameKing. Accurate High Country delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,755 fps to 3,015 fps. ADI AR 2217 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (435 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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. Norma MRP, Vihtavuori N560, Accurate MAGPRO rank at the top here: for 6.5 mm Rem. Mag. with the .264 | 140gr | 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.

← All load data