Load data for 6.5 PRC + .264 | 140gr | Speer Grand Slam

6.5 PRC cartridge drawing
Speer logo

Load Specifications

Bullet Manufacturer:Speer
Bullet Weight:140 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Case Length (l3):2.03"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:68 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:64,977 psi
Recommended Twist Rate:1:12.0

Load data in caliber 6.5 PRC with .264 | 140gr | Speer Grand Slam bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.

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 2700<<locked>>82%55,172 psi85%2753 fps99.7%
Accurate 3100<<locked>>96%58,508 psi90%2867 fps100%
Accurate 4350<<locked>>86%56,014 psi86%2844 fps100%
Accurate MAGPRO<<locked>>96%57,812 psi89%2969 fps97.8%
ADI AR 2208<<locked>>82%57,072 psi88%2802 fps100%
ADI AR 2209<<locked>>92%56,782 psi87%2900 fps99.5%
ADI AR 2213<<locked>>96%58,262 psi90%2966 fps99.1%
ADI AR 2217ᴾ<<locked>>100%48,733 psi75%2802 fps97.9%
ADI AR 2225ᴾ<<locked>>100%43,497 psi67%2762 fps99.3%
Alliant Reloder- TS 15.5<<locked>>82%58,363 psi90%2822 fps100%
Alliant Reloder-16<<locked>>88%56,768 psi87%2897 fps100%
Alliant Reloder-17<<locked>>84%57,957 psi89%2910 fps100%
Alliant Reloder-19<<locked>>92%56,275 psi87%2890 fps99.5%
Alliant Reloder-22<<locked>>96%58,160 psi90%2956 fps99.7%
Alliant Reloder-23<<locked>>96%55,521 psi85%2871 fps100%
Alliant Reloder-25ᴾ<<locked>>100%54,708 psi84%2933 fps100%
Alliant Reloder-26<<locked>>92%55,985 psi86%2963 fps100%
Baschieri & Pellagri 109<<locked>>96%56,304 psi87%2864 fps96.4%
Bofors RP15<<locked>>98%56,971 psi88%2940 fps99.6%
Bofors RP30ᴾ<<locked>>100%50,705 psi78%2871 fps98.6%
Bofors RP5<<locked>>96%58,160 psi90%2956 fps99.7%
Bofors RP7<<locked>>86%58,204 psi90%2841 fps99.9%
Hodgdon H1000ᴾ<<locked>>100%50,111 psi77%2828 fps98.7%
Hodgdon H414<<locked>>82%54,868 psi84%2858 fps99.9%
Hodgdon H4350<<locked>>88%58,639 psi90%2884 fps99.8%
Hodgdon H4831<<locked>>98%57,392 psi88%2890 fps98.5%
Hodgdon H4831 SC<<locked>>94%57,087 psi88%2887 fps98.5%
Hodgdon Hybrid 100V<<locked>>90%57,014 psi88%2818 fps100%
Hodgdon Retumboᴾ<<locked>>100%53,780 psi83%3002 fps99.9%
Hodgdon Superformance<<locked>>86%58,421 psi90%2943 fps100%
Hodgdon TrailBossᴾ<<locked>>100%37,101 psi57%1772 fps100%
IMR 4064<<locked>>82%56,043 psi86%2779 fps100%
IMR 4166 Enduron<<locked>>84%57,914 psi89%2815 fps100%
IMR 4350<<locked>>88%56,318 psi87%2831 fps99.9%
IMR 4451 Enduron<<locked>>84%56,246 psi87%2815 fps99.9%
IMR 4831<<locked>>92%57,377 psi88%2851 fps100%
IMR 4955 Enduron<<locked>>92%55,593 psi86%2828 fps98.4%
IMR 7828 SSC<<locked>>94%56,231 psi87%2946 fps99%
Lovex S065<<locked>>86%56,927 psi88%2812 fps100%
Lovex S070<<locked>>88%58,508 psi90%2861 fps100%
Lovex S071ᴾ<<locked>>100%55,579 psi86%2828 fps100%
Norma 204<<locked>>88%57,406 psi88%2887 fps99.5%
Norma 217ᴾ<<locked>>100%38,928 psi60%2687 fps97.7%
Norma MRP<<locked>>94%58,102 psi89%2982 fps100%
Norma URP<<locked>>88%57,986 psi89%2877 fps100%
Ramshot Grand<<locked>>92%55,898 psi86%2949 fps99.2%
Ramshot Hunter<<locked>>88%56,826 psi87%2887 fps100%
Ramshot Magnum<<locked>>96%57,348 psi88%2930 fps99.9%
ReloadSwiss RS 14ᴾ<<locked>>100%37,956 psi58%1814 fps100%
ReloadSwiss RS 60<<locked>>82%57,667 psi89%2897 fps100%
ReloadSwiss RS 62<<locked>>86%55,811 psi86%2864 fps100%
ReloadSwiss RS 70<<locked>>88%58,146 psi89%2953 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%54,375 psi84%3002 fps100%
ReloadSwiss RS 80ᴾ<<locked>>100%49,168 psi76%2881 fps96.9%
Rottweil R 903<<locked>>82%56,217 psi87%2792 fps100%
Rottweil R 904<<locked>>92%57,943 psi89%2871 fps99.1%
Rottweil R 905<<locked>>92%55,869 psi86%2881 fps99.6%
Rottweil R 907<<locked>>86%58,204 psi90%2841 fps99.9%
Shooters World Long Rifle<<locked>>86%56,927 psi88%2812 fps100%
Shooters World SW4350<<locked>>88%58,508 psi90%2861 fps100%
SNPE Vectan SP 11<<locked>>82%57,624 psi89%2848 fps100%
SNPE Vectan Tubal 5000<<locked>>82%55,840 psi86%2661 fps100%
SNPE Vectan Tubal 7000<<locked>>86%56,130 psi86%2766 fps99.9%
SNPE Vectan Tubal 8000<<locked>>92%55,434 psi85%2877 fps99.5%
Somchem S355<<locked>>82%55,695 psi86%2782 fps100%
Somchem S361<<locked>>90%55,869 psi86%2808 fps98.2%
Somchem S365<<locked>>90%58,552 psi90%2881 fps100%
Somchem S385<<locked>>92%56,304 psi87%2851 fps99.8%
Unknown powder<<locked>>86%58,291 psi90%2881 fps100%
Vihtavuori N150<<locked>>88%57,595 psi89%2769 fps100%
Vihtavuori N160<<locked>>86%58,479 psi90%2848 fps100%
Vihtavuori N165<<locked>>98%57,377 psi88%2854 fps99.8%
Vihtavuori N550<<locked>>84%55,492 psi85%2844 fps100%
Vihtavuori N555<<locked>>94%58,001 psi89%2900 fps100%
Vihtavuori N560<<locked>>96%58,407 psi90%2989 fps98.9%
Vihtavuori N565ᴾ<<locked>>100%57,682 psi89%2956 fps98.9%
Vihtavuori N568ᴾ<<locked>>100%50,502 psi78%2890 fps96.7%
Winchester 6.5 StaBALL<<locked>>86%55,637 psi86%2779 fps100%
Winchester 760<<locked>>82%54,868 psi84%2858 fps99.9%
Winchester StaBALL HD<<locked>>98%57,276 psi88%3012 fps100%
Winchester Supreme 780<<locked>>92%57,928 psi89%2874 fps99.6%

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%51,822 psi80%2700 fps99.4%
Accurate 3100<<locked>>80%34,055 psi52%2431 fps97.3%
Accurate 4350<<locked>>80%45,672 psi70%2680 fps100%
Accurate MAGPRO<<locked>>90%46,818 psi72%2782 fps95.3%
ADI AR 2208<<locked>>80%53,534 psi82%2749 fps100%
ADI AR 2209<<locked>>80%38,189 psi59%2556 fps95.9%
ADI AR 2213<<locked>>86%41,437 psi64%2657 fps95.6%
ADI AR 2217<<locked>>94%40,030 psi62%2625 fps95.3%
ADI AR 2225<<locked>>90%31,531 psi49%2464 fps95%
Alliant Reloder- TS 15.5<<locked>>80%54,737 psi84%2772 fps100%
Alliant Reloder-16<<locked>>80%43,801 psi67%2690 fps100%
Alliant Reloder-17<<locked>>80%50,328 psi77%2802 fps100%
Alliant Reloder-19<<locked>>80%38,101 psi59%2552 fps95.9%
Alliant Reloder-22<<locked>>82%36,274 psi56%2549 fps95.4%
Alliant Reloder-23<<locked>>80%32,735 psi50%2461 fps99.6%
Alliant Reloder-25<<locked>>80%28,601 psi44%2369 fps95.6%
Alliant Reloder-2651.3 gr80%35,694 psi55%2595 fps99%
Baschieri & Pellagri 109<<locked>>94%52,866 psi81%2808 fps95.6%
Bofors RP15<<locked>>84%36,216 psi56%2546 fps95.2%
Bofors RP30<<locked>>92%38,740 psi60%2638 fps95.5%
Bofors RP5<<locked>>82%36,274 psi56%2549 fps95.4%
Bofors RP7<<locked>>80%48,312 psi74%2684 fps99.1%
Hodgdon H1000<<locked>>92%38,450 psi59%2592 fps95.5%
Hodgdon H414<<locked>>80%51,416 psi79%2799 fps99.7%
Hodgdon H4350<<locked>>80%45,919 psi71%2674 fps98.3%
Hodgdon H4831<<locked>>90%44,440 psi68%2671 fps95.8%
Hodgdon H4831 SC<<locked>>86%43,439 psi67%2648 fps95.5%
Hodgdon Hybrid 100V<<locked>>80%41,408 psi64%2575 fps100%
Hodgdon Retumbo<<locked>>88%36,158 psi56%2625 fps96%
Hodgdon Superformance<<locked>>80%46,775 psi72%2753 fps99.1%
Hodgdon TrailBoss<<locked>>80%27,847 psi43%1585 fps100%
IMR 4064<<locked>>80%52,823 psi81%2730 fps100%
IMR 4166 Enduron<<locked>>80%51,314 psi79%2713 fps99.7%
IMR 4350<<locked>>80%43,947 psi68%2621 fps98.5%
IMR 4451 Enduron<<locked>>80%49,603 psi76%2707 fps99.5%
IMR 4831<<locked>>80%39,537 psi61%2549 fps99.7%
IMR 4955 Enduron<<locked>>84%43,149 psi66%2608 fps95.7%
IMR 7828 SSC51.5 gr84%39,914 psi61%2638 fps95.1%
Lovex S065<<locked>>80%47,384 psi73%2661 fps99.8%
Lovex S070<<locked>>80%45,658 psi70%2651 fps99.2%
Lovex S071<<locked>>80%29,341 psi45%2310 fps95.4%
Norma 204<<locked>>80%43,903 psi68%2654 fps97.4%
Norma 217<<locked>>96%34,200 psi53%2569 fps95.9%
Norma MRP<<locked>>80%35,476 psi55%2559 fps96.6%
Norma URP<<locked>>80%44,831 psi69%2671 fps100%
Ramshot Grand<<locked>>82%38,566 psi59%2621 fps95.1%
Ramshot Hunter<<locked>>80%43,671 psi67%2667 fps99.3%
Ramshot Magnum<<locked>>82%33,678 psi52%2484 fps95.2%
ReloadSwiss RS 14<<locked>>80%28,442 psi44%1621 fps100%
ReloadSwiss RS 60<<locked>>80%53,505 psi82%2841 fps100%
ReloadSwiss RS 62<<locked>>80%45,585 psi70%2703 fps100%
ReloadSwiss RS 70<<locked>>80%43,685 psi67%2717 fps99.9%
ReloadSwiss RS 76<<locked>>86%32,924 psi51%2536 fps95.7%
ReloadSwiss RS 80<<locked>>98%45,600 psi70%2812 fps96%
Rottweil R 903<<locked>>80%52,692 psi81%2740 fps100%
Rottweil R 904<<locked>>80%39,421 psi61%2536 fps95.1%
Rottweil R 905<<locked>>80%37,318 psi57%2533 fps95.9%
Rottweil R 907<<locked>>80%48,312 psi74%2684 fps99.1%
Shooters World Long Rifle<<locked>>80%47,384 psi73%2661 fps99.8%
Shooters World SW4350<<locked>>80%45,658 psi70%2651 fps99.2%
SNPE Vectan SP 11<<locked>>80%54,070 psi83%2799 fps100%
SNPE Vectan Tubal 5000<<locked>>80%52,605 psi81%2618 fps100%
SNPE Vectan Tubal 7000<<locked>>80%46,238 psi71%2608 fps99.2%
SNPE Vectan Tubal 8000<<locked>>80%36,985 psi57%2530 fps95.7%
Somchem S355<<locked>>80%52,504 psi81%2736 fps100%
Somchem S361<<locked>>82%42,873 psi66%2582 fps95.3%
Somchem S365<<locked>>80%41,887 psi64%2628 fps100%
Somchem S385<<locked>>80%37,942 psi58%2520 fps97%
Unknown powder<<locked>>80%47,921 psi74%2720 fps100%
Vihtavuori N150<<locked>>80%45,121 psi69%2582 fps100%
Vihtavuori N160<<locked>>80%48,095 psi74%2690 fps100%
Vihtavuori N165<<locked>>82%34,185 psi53%2428 fps95.2%
Vihtavuori N550<<locked>>80%48,559 psi75%2733 fps100%
Vihtavuori N555<<locked>>80%36,767 psi57%2536 fps99.5%
Vihtavuori N560<<locked>>86%41,684 psi64%2687 fps95.2%
Vihtavuori N565<<locked>>90%40,944 psi63%2657 fps95.3%
Vihtavuori N568<<locked>>98%46,949 psi72%2825 fps95.7%
Winchester 6.5 StaBALL<<locked>>80%45,136 psi69%2625 fps100%
Winchester 760<<locked>>80%51,416 psi79%2799 fps99.7%
Winchester StaBALL HD49.3 gr80%29,095 psi45%2474 fps99.7%
Winchester Supreme 780<<locked>>80%37,724 psi58%2516 fps95.8%

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 85 powders for 6.5 PRC loaded with the .264 | 140gr | Speer Grand Slam. Winchester StaBALL HD delivers the highest muzzle velocity at 3,012 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,012 fps. ADI AR 2217 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:12.0 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, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for 6.5 PRC with the .264 | 140gr | Speer Grand Slam they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N570 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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