Load data for 6.5 PRC + .263 | 139gr | Prvi Partizan SP BT

6.5 PRC cartridge drawing
Prvi Partizan logo

Load Specifications

Bullet Manufacturer:Prvi Partizan
Bullet Weight:139 gr
Bullet Diameter:0.263"
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:1:10.5

Load data in caliber 6.5 PRC with .263 | 139gr | Prvi Partizan SP BT bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP 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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2700<<locked>>84%57,711 psi89%2792 fps99.8%
Accurate 3100<<locked>>96%56,681 psi87%2848 fps100%
Accurate 4350<<locked>>88%58,204 psi90%2881 fps100%
Accurate MAGPRO<<locked>>96%55,811 psi86%2943 fps97.2%
ADI AR 2208<<locked>>82%55,811 psi86%2789 fps100%
ADI AR 2209<<locked>>92%55,013 psi85%2881 fps99.3%
ADI AR 2213<<locked>>96%56,579 psi87%2943 fps98.8%
ADI AR 2217ᴾ<<locked>>100%47,355 psi73%2779 fps97.4%
ADI AR 2225ᴾ<<locked>>100%41,989 psi65%2736 fps98.9%
Alliant Reloder- TS 15.5<<locked>>82%57,029 psi88%2812 fps100%
Alliant Reloder-16<<locked>>88%55,376 psi85%2884 fps100%
Alliant Reloder-17<<locked>>84%56,536 psi87%2900 fps100%
Alliant Reloder-19<<locked>>94%58,276 psi90%2927 fps99.6%
Alliant Reloder-22<<locked>>96%56,405 psi87%2936 fps99.5%
Alliant Reloder-23<<locked>>98%57,421 psi88%2907 fps100%
Alliant Reloder-25ᴾ<<locked>>100%53,026 psi82%2913 fps100%
Alliant Reloder-26<<locked>>94%58,030 psi89%2999 fps100%
Baschieri & Pellagri 109<<locked>>98%58,276 psi90%2897 fps96.5%
Bofors RP15<<locked>>98%55,230 psi85%2917 fps99.4%
Bofors RP3<<locked>>82%58,160 psi90%2828 fps100%
Bofors RP30ᴾ<<locked>>100%48,965 psi75%2848 fps98.1%
Bofors RP5<<locked>>96%56,405 psi87%2936 fps99.5%
Bofors RP7<<locked>>86%57,043 psi88%2828 fps99.8%
Hodgdon H1000ᴾ<<locked>>100%48,646 psi75%2805 fps98.2%
Hodgdon H380<<locked>>82%58,073 psi89%2848 fps100%
Hodgdon H414<<locked>>84%57,276 psi88%2897 fps100%
Hodgdon H4350<<locked>>88%57,435 psi88%2871 fps99.6%
Hodgdon H4831<<locked>>98%55,695 psi86%2867 fps98.1%
Hodgdon H4831 SC<<locked>>94%55,405 psi85%2861 fps98%
Hodgdon Hybrid 100V<<locked>>90%55,419 psi85%2805 fps100%
Hodgdon Retumboᴾ<<locked>>100%51,866 psi80%2972 fps99.7%
Hodgdon Superformance<<locked>>86%56,594 psi87%2920 fps99.9%
Hodgdon TrailBossᴾ<<locked>>100%37,057 psi57%1768 fps100%
Hodgdon VARGET<<locked>>82%58,653 psi90%2822 fps100%
IMR 4064<<locked>>84%58,117 psi89%2812 fps100%
IMR 4166 Enduron<<locked>>84%56,724 psi87%2799 fps99.9%
IMR 4350<<locked>>90%58,595 psi90%2867 fps99.9%
IMR 4451 Enduron<<locked>>86%58,392 psi90%2851 fps100%
IMR 4831<<locked>>92%55,811 psi86%2835 fps100%
IMR 4955 Enduron<<locked>>94%57,609 psi89%2861 fps98.5%
IMR 7828 SSC<<locked>>96%58,450 psi90%2982 fps99.1%
Lovex S065<<locked>>86%55,477 psi85%2795 fps100%
Lovex S070<<locked>>88%57,043 psi88%2844 fps100%
Lovex S071ᴾ<<locked>>100%53,809 psi83%2808 fps100%
Norma 204<<locked>>88%55,985 psi86%2871 fps99.3%
Norma 217ᴾ<<locked>>100%37,521 psi58%2657 fps97%
Norma MRP<<locked>>94%56,217 psi87%2959 fps100%
Norma URP<<locked>>88%56,362 psi87%2861 fps100%
Ramshot Grand<<locked>>94%58,552 psi90%2992 fps99.3%
Ramshot Hunter<<locked>>88%55,361 psi85%2871 fps100%
Ramshot Magnum<<locked>>96%55,274 psi85%2904 fps99.8%
ReloadSwiss RS 14ᴾ<<locked>>100%37,913 psi58%1811 fps100%
ReloadSwiss RS 50<<locked>>82%57,798 psi89%2838 fps100%
ReloadSwiss RS 60<<locked>>82%55,811 psi86%2881 fps100%
ReloadSwiss RS 62<<locked>>88%57,943 psi89%2904 fps100%
ReloadSwiss RS 70<<locked>>88%56,246 psi87%2930 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%52,228 psi80%2969 fps100%
ReloadSwiss RS 80ᴾ<<locked>>100%47,413 psi73%2851 fps96.2%
Rottweil R 903<<locked>>84%58,320 psi90%2825 fps100%
Rottweil R 904<<locked>>92%56,536 psi87%2851 fps98.7%
Rottweil R 905<<locked>>94%57,841 psi89%2913 fps99.6%
Rottweil R 907<<locked>>86%57,043 psi88%2828 fps99.8%
Shooters World Long Rifle<<locked>>86%55,477 psi85%2795 fps100%
Shooters World SW4350<<locked>>88%57,043 psi88%2844 fps100%
SNPE Vectan SP 11<<locked>>82%56,014 psi86%2831 fps100%
SNPE Vectan Tubal 5000<<locked>>84%58,291 psi90%2697 fps100%
SNPE Vectan Tubal 7000<<locked>>88%58,494 psi90%2805 fps100%
SNPE Vectan Tubal 8000<<locked>>94%57,377 psi88%2910 fps99.6%
Somchem S355<<locked>>84%58,001 psi89%2822 fps100%
Somchem S361<<locked>>92%58,030 psi89%2844 fps98.4%
Somchem S365<<locked>>90%56,840 psi87%2867 fps100%
Somchem S385<<locked>>94%58,291 psi90%2884 fps99.9%
Unknown powder<<locked>>86%56,681 psi87%2864 fps100%
Vihtavuori N150<<locked>>88%56,347 psi87%2756 fps100%
Vihtavuori N160<<locked>>86%57,232 psi88%2835 fps100%
Vihtavuori N165<<locked>>98%55,738 psi86%2835 fps99.6%
Vihtavuori N550<<locked>>86%57,595 psi89%2877 fps100%
Vihtavuori N555<<locked>>94%56,072 psi86%2881 fps100%
Vihtavuori N560<<locked>>96%56,652 psi87%2966 fps98.5%
Vihtavuori N565ᴾ<<locked>>100%55,680 psi86%2930 fps98.5%
Winchester 6.5 StaBALL<<locked>>88%57,957 psi89%2815 fps100%
Winchester 760<<locked>>84%57,276 psi88%2897 fps100%
Winchester StaBALL HD<<locked>>98%54,694 psi84%2989 fps100%
Winchester Supreme 780<<locked>>92%55,956 psi86%2848 fps99.3%

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%50,778 psi78%2687 fps99.2%
Accurate 3100<<locked>>80%32,967 psi51%2411 fps96.7%
Accurate 4350<<locked>>80%44,324 psi68%2661 fps99.9%
Accurate MAGPRO57.1 gr92%48,443 psi75%2818 fps95.6%
ADI AR 2208<<locked>>80%52,272 psi80%2736 fps100%
ADI AR 2209<<locked>>80%37,159 psi57%2536 fps95.3%
ADI AR 2213<<locked>>88%43,062 psi66%2697 fps95.8%
ADI AR 2217<<locked>>96%41,481 psi64%2657 fps95.6%
ADI AR 2225<<locked>>92%32,489 psi50%2493 fps95.3%
Alliant Reloder- TS 15.5<<locked>>80%53,722 psi83%2762 fps100%
Alliant Reloder-16<<locked>>80%42,511 psi65%2667 fps100%
Alliant Reloder-17<<locked>>80%48,979 psi75%2785 fps100%
Alliant Reloder-19<<locked>>80%37,028 psi57%2530 fps95.3%
Alliant Reloder-22<<locked>>84%37,681 psi58%2589 fps95.7%
Alliant Reloder-23<<locked>>80%31,676 psi49%2441 fps99.3%
Alliant Reloder-25<<locked>>82%29,472 psi45%2398 fps95.8%
Alliant Reloder-26<<locked>>80%34,345 psi53%2569 fps98.6%
Baschieri & Pellagri 109<<locked>>96%54,868 psi84%2844 fps95.8%
Bofors RP15<<locked>>86%37,434 psi58%2579 fps95.5%
Bofors RP3<<locked>>80%54,404 psi84%2776 fps100%
Bofors RP30<<locked>>94%39,958 psi61%2671 fps95.7%
Bofors RP5<<locked>>84%37,681 psi58%2589 fps95.7%
Bofors RP7<<locked>>80%47,384 psi73%2671 fps98.9%
Hodgdon H1000<<locked>>94%39,784 psi61%2625 fps95.7%
Hodgdon H380<<locked>>80%54,404 psi84%2795 fps100%
Hodgdon H414<<locked>>80%49,937 psi77%2779 fps99.5%
Hodgdon H4350<<locked>>80%44,744 psi69%2654 fps97.9%
Hodgdon H4831<<locked>>90%43,134 psi66%2644 fps95.2%
Hodgdon H4831 SC<<locked>>86%42,424 psi65%2631 fps95%
Hodgdon Hybrid 100V<<locked>>80%40,132 psi62%2559 fps100%
Hodgdon Retumbo<<locked>>88%35,041 psi54%2595 fps95.1%
Hodgdon Superformance<<locked>>80%45,353 psi70%2733 fps98.8%
Hodgdon TrailBoss<<locked>>80%27,615 psi43%1578 fps100%
Hodgdon VARGET<<locked>>80%55,245 psi85%2776 fps100%
IMR 4064<<locked>>80%51,503 psi79%2713 fps100%
IMR 4166 Enduron<<locked>>80%50,140 psi77%2694 fps99.5%
IMR 4350<<locked>>80%42,844 psi66%2602 fps98.1%
IMR 4451 Enduron<<locked>>80%48,733 psi75%2694 fps99.3%
IMR 4831<<locked>>80%38,334 psi59%2533 fps99.4%
IMR 4955 Enduron<<locked>>84%42,192 psi65%2592 fps95.1%
IMR 7828 SSC<<locked>>86%41,408 psi64%2674 fps95.4%
Lovex S065<<locked>>80%46,224 psi71%2644 fps99.7%
Lovex S070<<locked>>80%44,512 psi69%2631 fps98.9%
Lovex S071<<locked>>82%30,400 psi47%2346 fps95.7%
Norma 204<<locked>>80%42,525 psi65%2631 fps96.9%
Norma 217<<locked>>96%32,938 psi51%2539 fps95%
Norma MRP48.8 gr80%34,418 psi53%2536 fps96%
Norma URP<<locked>>80%43,555 psi67%2651 fps99.9%
Ramshot Grand<<locked>>84%40,263 psi62%2661 fps95.4%
Ramshot Hunter<<locked>>80%42,308 psi65%2644 fps99%
Ramshot Magnum<<locked>>84%34,954 psi54%2520 fps95.5%
ReloadSwiss RS 14<<locked>>80%28,224 psi43%1614 fps100%
ReloadSwiss RS 50<<locked>>80%54,201 psi83%2782 fps99.9%
ReloadSwiss RS 60<<locked>>80%51,982 psi80%2828 fps100%
ReloadSwiss RS 62<<locked>>80%44,324 psi68%2687 fps99.9%
ReloadSwiss RS 70<<locked>>80%42,540 psi65%2700 fps99.7%
ReloadSwiss RS 76<<locked>>88%34,142 psi53%2572 fps96%
ReloadSwiss RS 80<<locked>>98%43,888 psi68%2782 fps95.1%
Rottweil R 903<<locked>>80%51,300 psi79%2726 fps100%
Rottweil R 904<<locked>>82%41,031 psi63%2572 fps95.4%
Rottweil R 905<<locked>>80%36,434 psi56%2516 fps95.3%
Rottweil R 907<<locked>>80%47,384 psi73%2671 fps98.9%
Shooters World Long Rifle<<locked>>80%46,224 psi71%2644 fps99.7%
Shooters World SW4350<<locked>>80%44,512 psi69%2631 fps98.9%
SNPE Vectan SP 11<<locked>>80%52,504 psi81%2779 fps100%
SNPE Vectan Tubal 5000<<locked>>80%51,619 psi79%2608 fps100%
SNPE Vectan Tubal 7000<<locked>>80%45,150 psi69%2592 fps98.9%
SNPE Vectan Tubal 8000<<locked>>80%36,100 psi56%2513 fps95.2%
Somchem S355<<locked>>80%51,184 psi79%2720 fps100%
Somchem S361<<locked>>84%44,744 psi69%2621 fps95.7%
Somchem S365<<locked>>80%40,553 psi62%2612 fps100%
Somchem S385<<locked>>80%36,883 psi57%2500 fps96.4%
Unknown powder<<locked>>80%46,644 psi72%2703 fps99.9%
Vihtavuori N150<<locked>>80%44,121 psi68%2572 fps100%
Vihtavuori N160<<locked>>80%46,876 psi72%2677 fps100%
Vihtavuori N165<<locked>>84%35,346 psi54%2461 fps95.5%
Vihtavuori N550<<locked>>80%47,355 psi73%2717 fps100%
Vihtavuori N555<<locked>>80%35,520 psi55%2516 fps99.3%
Vihtavuori N56052.5 gr88%43,207 psi66%2723 fps95.5%
Vihtavuori N565<<locked>>92%42,438 psi65%2694 fps95.6%
Winchester 6.5 StaBALL<<locked>>80%44,063 psi68%2612 fps100%
Winchester 760<<locked>>80%49,937 psi77%2779 fps99.5%
Winchester StaBALL HD<<locked>>80%28,021 psi43%2444 fps99.3%
Winchester Supreme 780<<locked>>80%36,709 psi56%2497 fps95.2%

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 84 powders for 6.5 PRC loaded with the .263 | 139gr | Prvi Partizan SP BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,768 fps to 2,999 fps. ADI AR 2217 gives the best case fill at 100 %, and 84 of the 84 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 139.0 gr projectile in 0.263" calls for a 1:10.5 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for 6.5 PRC with the .263 | 139gr | Prvi Partizan SP BT 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