Load data for 6.5 Rem. SA Ultra Mag. + .264 | 128gr | TWENTY-NINE ERTP

6.5 Rem. SA Ultra Mag. cartridge drawing
TWENTY-NINE logo

Load Specifications

Bullet Manufacturer:TWENTY-NINE
Bullet Weight:128 gr
Bullet Diameter:0.265"
Bullet Length:<<locked>>
Case Length (l3):2.035"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:72 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:8.0

Load data in caliber 6.5 Rem. SA Ultra Mag. with .264 | 128gr | TWENTY-NINE ERTP bullet and 92 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 Alliant Reloder-26.

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 2700<<locked>>82%56,318 psi87%2890 fps99.3%
Accurate 3100<<locked>>98%55,564 psi85%2946 fps99.9%
Accurate 4064<<locked>>82%56,130 psi86%2871 fps100%
Accurate 4350<<locked>>90%57,508 psi88%2992 fps100%
Accurate High Country<<locked>>96%56,985 psi88%3097 fps98.4%
Accurate MAGPRO<<locked>>98%57,986 psi89%3097 fps97.4%
ADI AR 2208<<locked>>84%55,811 psi86%2904 fps100%
ADI AR 2209<<locked>>96%58,378 psi90%3045 fps99.1%
ADI AR 2213<<locked>>98%55,753 psi86%3035 fps97.9%
ADI AR 2225ᴾ<<locked>>100%38,580 psi59%2749 fps96.9%
Alliant Power Pro Varmint<<locked>>96%58,523 psi90%3041 fps99.2%
Alliant Power Pro Varmint<<locked>>96%58,523 psi90%3041 fps99.2%
Alliant Reloder- TS 15.5<<locked>>84%56,768 psi87%2927 fps100%
Alliant Reloder-15<<locked>>82%57,101 psi88%2949 fps100%
Alliant Reloder-16<<locked>>92%58,233 psi90%3048 fps100%
Alliant Reloder-17<<locked>>86%55,695 psi86%3012 fps100%
Alliant Reloder-19<<locked>>96%57,754 psi89%3028 fps99.1%
Alliant Reloder-22<<locked>>98%55,216 psi85%3035 fps98.9%
Alliant Reloder-23ᴾ<<locked>>100%56,043 psi86%3012 fps100%
Alliant Reloder-25ᴾ<<locked>>100%48,646 psi75%2953 fps99.9%
Alliant Reloder-26<<locked>>96%56,463 psi87%3104 fps100%
Bofors RP15ᴾ<<locked>>100%54,346 psi84%3018 fps98.7%
Bofors RP3<<locked>>84%58,117 psi89%2946 fps100%
Bofors RP30ᴾ<<locked>>100%44,498 psi68%2871 fps96.1%
Bofors RP5<<locked>>98%55,216 psi85%3035 fps98.9%
Bofors RP7<<locked>>88%57,014 psi88%2940 fps99.5%
Hodgdon H1000ᴾ<<locked>>100%48,138 psi74%2894 fps97.2%
Hodgdon H380<<locked>>84%58,189 psi90%2966 fps100%
Hodgdon H414<<locked>>88%55,782 psi86%2992 fps99.7%
Hodgdon H4350<<locked>>88%58,755 psi90%3002 fps99.3%
Hodgdon H4831<<locked>>96%55,898 psi86%2976 fps97.3%
Hodgdon H4831 SC<<locked>>98%58,537 psi90%3018 fps97.8%
Hodgdon Hybrid 100V<<locked>>94%58,407 psi90%2963 fps100%
Hodgdon Retumboᴾ<<locked>>100%47,543 psi73%2999 fps98.5%
Hodgdon Superformance<<locked>>88%56,072 psi86%3028 fps99.6%
Hodgdon TrailBossᴾ<<locked>>100%36,695 psi56%1834 fps100%
IMR 4064<<locked>>84%58,769 psi90%2936 fps100%
IMR 4166 Enduron<<locked>>82%57,508 psi88%2923 fps99.7%
IMR 4350<<locked>>92%58,363 psi90%2976 fps99.6%
IMR 4451 Enduron<<locked>>88%58,436 psi90%2963 fps99.8%
IMR 4831<<locked>>92%57,754 psi89%2979 fps100%
IMR 4895<<locked>>82%58,595 psi90%2979 fps100%
IMR 4955 Enduron<<locked>>96%57,450 psi88%2966 fps97.7%
IMR 7828 SSCᴾ<<locked>>100%57,087 psi88%3071 fps98.2%
Lovex S062<<locked>>82%55,666 psi86%2881 fps100%
Lovex S065<<locked>>88%55,317 psi85%2907 fps100%
Lovex S070<<locked>>90%56,768 psi87%2949 fps99.8%
Lovex S071ᴾ<<locked>>100%49,385 psi76%2848 fps99.5%
Norma 203B<<locked>>82%56,391 psi87%2936 fps100%
Norma 204<<locked>>90%55,564 psi85%2972 fps98.7%
Norma MRP<<locked>>96%55,071 psi85%3061 fps99.7%
Norma URP<<locked>>90%55,825 psi86%2972 fps100%
Ramshot Big Game<<locked>>82%57,406 psi88%2966 fps100%
Ramshot Grandᴾ<<locked>>100%58,001 psi89%3097 fps98.7%
Ramshot Hunter<<locked>>92%58,479 psi90%3031 fps100%
Ramshot Magnumᴾ<<locked>>100%51,982 psi80%2963 fps99%
ReloadSwiss RS 14ᴾ<<locked>>100%37,492 psi58%1880 fps100%
ReloadSwiss RS 50<<locked>>84%57,972 psi89%2953 fps99.9%
ReloadSwiss RS 60<<locked>>84%55,143 psi85%2999 fps100%
ReloadSwiss RS 62<<locked>>90%57,493 psi88%3015 fps100%
ReloadSwiss RS 70<<locked>>90%55,695 psi86%3041 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%47,805 psi74%2992 fps99.3%
Rottweil R 902<<locked>>82%57,537 psi89%2890 fps100%
Rottweil R 903<<locked>>86%57,957 psi89%2940 fps100%
Rottweil R 904<<locked>>94%55,941 psi86%2949 fps98%
Rottweil R 905<<locked>>96%57,217 psi88%3018 fps99.1%
Rottweil R 907<<locked>>88%57,014 psi88%2940 fps99.5%
Shooters World Long Rifle<<locked>>88%55,317 psi85%2907 fps100%
Shooters World Precision<<locked>>82%55,666 psi86%2881 fps100%
Shooters World SW4350<<locked>>90%56,768 psi87%2949 fps99.8%
SNPE Vectan SP 11<<locked>>84%55,912 psi86%2949 fps100%
SNPE Vectan Tubal 5000<<locked>>86%58,494 psi90%2815 fps100%
SNPE Vectan Tubal 7000<<locked>>90%58,465 psi90%2913 fps99.8%
SNPE Vectan Tubal 8000<<locked>>96%56,739 psi87%3015 fps99.1%
Somchem S355<<locked>>86%57,812 psi89%2936 fps100%
Somchem S361<<locked>>94%58,030 psi89%2949 fps97.6%
Somchem S365<<locked>>92%55,869 psi86%2976 fps100%
Somchem S385<<locked>>96%57,711 psi89%2992 fps99.6%
Vihtavuori N135<<locked>>82%58,059 psi89%2844 fps100%
Vihtavuori N140<<locked>>82%58,247 psi90%2861 fps100%
Vihtavuori N150<<locked>>86%55,405 psi85%2858 fps100%
Vihtavuori N160<<locked>>90%57,972 psi89%2966 fps100%
Vihtavuori N165ᴾ<<locked>>100%57,072 psi88%2966 fps99.3%
Vihtavuori N540<<locked>>82%56,246 psi87%2858 fps100%
Vihtavuori N550<<locked>>90%57,000 psi88%2969 fps100%
Vihtavuori N555<<locked>>98%58,624 psi90%3038 fps100%
Vihtavuori N560<<locked>>96%55,172 psi85%3051 fps97.5%
Vihtavuori N565ᴾ<<locked>>100%50,894 psi78%2963 fps96.9%
Winchester 6.5 StaBALL<<locked>>90%57,754 psi89%2927 fps100%
Winchester 760<<locked>>88%55,782 psi86%2992 fps99.7%
Winchester StaBALL HDᴾ<<locked>>100%52,489 psi81%3091 fps100%
Winchester Supreme 780<<locked>>98%57,740 psi89%2986 fps99%

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%52,765 psi81%2831 fps98.9%
Accurate 3100<<locked>>82%32,416 psi50%2493 fps95.5%
Accurate 4064<<locked>>80%52,794 psi81%2822 fps100%
Accurate 4350<<locked>>80%40,857 psi63%2707 fps99.3%
Accurate High Country<<locked>>88%43,178 psi66%2841 fps95.2%
Accurate MAGPRO<<locked>>94%50,183 psi77%2966 fps95.7%
ADI AR 2208<<locked>>80%49,458 psi76%2805 fps100%
ADI AR 2209<<locked>>84%39,363 psi61%2687 fps95%
ADI AR 2213<<locked>>92%45,600 psi70%2848 fps95.5%
ADI AR 2225<<locked>>98%36,143 psi56%2684 fps95.8%
Alliant Power Pro Varmint<<locked>>84%39,436 psi61%2687 fps95.1%
Alliant Power Pro Varmint<<locked>>84%39,436 psi61%2687 fps95.1%
Alliant Reloder- TS 15.5<<locked>>80%50,314 psi77%2828 fps100%
Alliant Reloder-15<<locked>>80%53,461 psi82%2897 fps100%
Alliant Reloder-16<<locked>>80%39,378 psi61%2713 fps99.4%
Alliant Reloder-17<<locked>>80%45,107 psi69%2838 fps100%
Alliant Reloder-19<<locked>>84%39,044 psi60%2680 fps95%
Alliant Reloder-22<<locked>>88%39,552 psi61%2733 fps95.4%
Alliant Reloder-23<<locked>>80%29,095 psi45%2467 fps97.8%
Alliant Reloder-25<<locked>>86%30,937 psi48%2533 fps95.3%
Alliant Reloder-2649.8 gr80%31,314 psi48%2585 fps96.5%
Bofors RP15<<locked>>90%39,030 psi60%2720 fps95%
Bofors RP3<<locked>>80%50,792 psi78%2838 fps100%
Bofors RP30<<locked>>98%41,495 psi64%2805 fps95.1%
Bofors RP5<<locked>>88%39,552 psi61%2733 fps95.4%
Bofors RP7<<locked>>80%44,454 psi68%2720 fps97.6%
Hodgdon H1000<<locked>>96%41,901 psi64%2762 fps95.2%
Hodgdon H380<<locked>>80%50,937 psi78%2854 fps99.9%
Hodgdon H414<<locked>>80%42,641 psi66%2753 fps97.8%
Hodgdon H4350<<locked>>80%45,397 psi70%2772 fps97.2%
Hodgdon H4831<<locked>>92%48,950 psi75%2858 fps95.8%
Hodgdon H4831 SC<<locked>>92%47,848 psi74%2838 fps95.5%
Hodgdon Hybrid 100V<<locked>>80%37,043 psi57%2602 fps99.7%
Hodgdon Retumbo<<locked>>94%39,059 psi60%2799 fps95.7%
Hodgdon Superformance<<locked>>80%41,582 psi64%2766 fps97.2%
Hodgdon TrailBoss<<locked>>80%27,441 psi42%1640 fps100%
IMR 4064<<locked>>80%52,054 psi80%2838 fps100%
IMR 4166 Enduron<<locked>>80%54,172 psi83%2871 fps99.5%
IMR 4350<<locked>>80%40,016 psi62%2644 fps96.5%
IMR 4451 Enduron<<locked>>80%45,847 psi71%2746 fps98.3%
IMR 4831<<locked>>80%39,102 psi60%2654 fps99.1%
IMR 4895<<locked>>80%54,839 psi84%2923 fps100%
IMR 4955 Enduron<<locked>>90%47,500 psi73%2795 fps95.6%
IMR 7828 SSC<<locked>>92%43,743 psi67%2822 fps95%
Lovex S062<<locked>>80%52,402 psi81%2831 fps100%
Lovex S065<<locked>>80%43,308 psi67%2694 fps98.9%
Lovex S070<<locked>>80%41,568 psi64%2677 fps97.7%
Lovex S071<<locked>>86%31,633 psi49%2477 fps95.2%
Norma 203B<<locked>>80%52,837 psi81%2881 fps100%
Norma 204<<locked>>82%42,308 psi65%2730 fps95.9%
Norma MRP50.7 gr84%36,071 psi55%2680 fps95.6%
Norma URP<<locked>>80%40,364 psi62%2697 fps99.2%
Ramshot Big Game<<locked>>80%53,417 psi82%2907 fps100%
Ramshot Grand<<locked>>92%43,482 psi67%2831 fps95.4%
Ramshot Hunter<<locked>>80%39,146 psi60%2684 fps97.7%
Ramshot Magnum<<locked>>92%38,740 psi60%2703 fps95.9%
ReloadSwiss RS 14<<locked>>80%28,007 psi43%1680 fps100%
ReloadSwiss RS 50<<locked>>80%50,894 psi78%2841 fps99.5%
ReloadSwiss RS 60<<locked>>80%47,892 psi74%2890 fps100%
ReloadSwiss RS 62<<locked>>80%40,611 psi62%2723 fps99.1%
ReloadSwiss RS 70<<locked>>80%39,102 psi60%2733 fps98.7%
ReloadSwiss RS 76<<locked>>92%35,940 psi55%2710 fps95.5%
Rottweil R 902<<locked>>80%54,201 psi83%2841 fps100%
Rottweil R 903<<locked>>80%47,834 psi74%2785 fps100%
Rottweil R 904<<locked>>86%43,540 psi67%2726 fps95.1%
Rottweil R 905<<locked>>84%38,406 psi59%2664 fps95%
Rottweil R 907<<locked>>80%44,454 psi68%2720 fps97.6%
Shooters World Long Rifle<<locked>>80%43,308 psi67%2694 fps98.9%
Shooters World Precision<<locked>>80%52,402 psi81%2831 fps100%
Shooters World SW4350<<locked>>80%41,568 psi64%2677 fps97.7%
SNPE Vectan SP 11<<locked>>80%49,023 psi75%2841 fps100%
SNPE Vectan Tubal 5000<<locked>>80%48,602 psi75%2677 fps100%
SNPE Vectan Tubal 7000<<locked>>80%42,337 psi65%2638 fps97.7%
SNPE Vectan Tubal 8000<<locked>>86%40,567 psi62%2717 fps95.7%
Somchem S355<<locked>>80%47,921 psi74%2782 fps100%
Somchem S361<<locked>>88%47,558 psi73%2772 fps95.4%
Somchem S365<<locked>>80%37,101 psi57%2654 fps100%
Somchem S385<<locked>>82%36,477 psi56%2592 fps95.3%
Vihtavuori N135<<locked>>80%54,563 psi84%2795 fps100%
Vihtavuori N140<<locked>>80%54,549 psi84%2808 fps100%
Vihtavuori N150<<locked>>80%45,832 psi71%2710 fps100%
Vihtavuori N160<<locked>>80%41,785 psi64%2694 fps99.4%
Vihtavuori N165<<locked>>88%38,276 psi59%2625 fps95.5%
Vihtavuori N540<<locked>>80%52,750 psi81%2805 fps100%
Vihtavuori N550<<locked>>80%41,191 psi63%2694 fps99.1%
Vihtavuori N555<<locked>>80%32,430 psi50%2546 fps97.9%
Vihtavuori N56054.4 gr90%44,933 psi69%2861 fps95%
Vihtavuori N565<<locked>>96%44,309 psi68%2835 fps95.1%
Winchester 6.5 StaBALL<<locked>>80%40,741 psi63%2657 fps100%
Winchester 760<<locked>>80%42,859 psi66%2756 fps97.8%
Winchester StaBALL HD<<locked>>80%25,730 psi40%2448 fps97.1%
Winchester Supreme 780<<locked>>88%40,857 psi63%2687 fps95.6%

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 92 powders for 6.5 Rem. SA Ultra Mag. loaded with the .264 | 128gr | TWENTY-NINE ERTP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,104 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,104 fps. ADI AR 2225 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 128.0 gr projectile in 0.265" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for 6.5 Rem. SA Ultra Mag. with the .264 | 128gr | TWENTY-NINE ERTP 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.

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