Load data for 7 x 65 R Brenneke + .284 | 140gr | Barnes MRX BT

7 x 65 R Brenneke cartridge drawing
Barnes logo

Load Specifications

Bullet Manufacturer:Barnes
Bullet Weight:140 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.56"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:66 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:55,114 psi
Recommended Twist Rate:1:11.5

Load data in caliber 7 x 65 R Brenneke with .284 | 140gr | Barnes MRX BT bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Reloder-16.

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: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>86%49,124 psi89%2717 fps100%
Accurate 4064<<locked>>88%49,226 psi89%2762 fps100%
Accurate 4350<<locked>>96%48,776 psi89%2831 fps98.8%
ADI AR 2206H<<locked>>82%46,992 psi85%2736 fps99.3%
ADI AR 2208<<locked>>88%48,385 psi88%2743 fps99.1%
ADI Benchmark 8208<<locked>>82%49,269 psi89%2746 fps99.9%
Alliant AR-Comp<<locked>>82%49,821 psi90%2730 fps100%
Alliant Power Pro 2000-MR<<locked>>86%49,632 psi90%2897 fps99.3%
Alliant Reloder- TS 15.5<<locked>>88%48,051 psi87%2762 fps99.8%
Alliant Reloder-15<<locked>>86%48,501 psi88%2782 fps99.2%
Alliant Reloder-16<<locked>>96%47,747 psi87%2841 fps98.9%
Alliant Reloder-17<<locked>>92%48,240 psi88%2874 fps99.8%
Alliant Reloder-23ᴾ<<locked>>100%38,348 psi70%2674 fps98.2%
Alliant Reloder-26ᴾ<<locked>>100%42,975 psi78%2831 fps97.4%
Baschieri & Pellagri 107<<locked>>84%49,763 psi90%2802 fps99%
Bofors RP3<<locked>>88%48,124 psi87%2776 fps99.8%
Hodgdon BL-C2<<locked>>82%48,298 psi88%2769 fps100%
Hodgdon H380<<locked>>88%49,168 psi89%2785 fps98.4%
Hodgdon H414<<locked>>94%48,776 psi89%2828 fps96.4%
Hodgdon H4895<<locked>>82%47,442 psi86%2746 fps99.6%
Hodgdon Hybrid 100V<<locked>>98%47,123 psi86%2772 fps99.6%
Hodgdon LEVERevolution<<locked>>86%49,864 psi90%2831 fps99.9%
Hodgdon TrailBossᴾ<<locked>>100%35,433 psi64%1752 fps100%
Hodgdon VARGET<<locked>>84%48,878 psi89%2756 fps99.7%
IMR 3031<<locked>>82%47,166 psi86%2740 fps100%
IMR 4064<<locked>>86%47,645 psi86%2723 fps99.1%
IMR 4166 Enduron<<locked>>84%47,543 psi86%2697 fps96%
IMR 4451 Enduron<<locked>>90%47,485 psi86%2720 fps95.9%
IMR 4831<<locked>>96%46,572 psi85%2772 fps98.5%
IMR 4895<<locked>>86%49,748 psi90%2812 fps99.6%
IMR 8208 XBR<<locked>>82%49,269 psi89%2746 fps99.9%
Lovex D073.6<<locked>>84%49,603 psi90%2769 fps100%
Lovex S060<<locked>>82%46,978 psi85%2671 fps99.3%
Lovex S062<<locked>>86%47,355 psi86%2723 fps99.9%
Lovex S065<<locked>>92%46,775 psi85%2717 fps97.2%
Lovex S070<<locked>>94%47,398 psi86%2746 fps96.3%
Norma 201<<locked>>84%48,878 psi89%2740 fps99.9%
Norma 202<<locked>>84%49,603 psi90%2746 fps100%
Norma 203B<<locked>>86%47,776 psi87%2769 fps99.4%
Norma URP<<locked>>96%48,588 psi88%2825 fps98.7%
Ramshot Big Game<<locked>>86%47,921 psi87%2789 fps99.4%
Ramshot Hunter<<locked>>96%47,427 psi86%2815 fps97%
Ramshot TAC<<locked>>82%49,501 psi90%2756 fps97.9%
Ramshot Wild Boar<<locked>>82%48,834 psi89%2772 fps99.5%
ReloadSwiss RS 14ᴾ<<locked>>100%35,723 psi65%1788 fps100%
ReloadSwiss RS 50<<locked>>88%49,414 psi90%2762 fps97.1%
ReloadSwiss RS 52<<locked>>84%48,515 psi88%2841 fps99.2%
ReloadSwiss RS 60<<locked>>90%48,124 psi87%2877 fps100%
ReloadSwiss RS 62<<locked>>96%48,776 psi89%2854 fps98.6%
ReloadSwiss RS 70<<locked>>96%48,675 psi88%2877 fps98.3%
Rottweil R 901<<locked>>82%49,748 psi90%2723 fps100%
Rottweil R 902<<locked>>86%49,400 psi90%2736 fps99.9%
Rottweil R 903<<locked>>90%48,008 psi87%2766 fps99.7%
Shooters World Long Rifle<<locked>>92%46,775 psi85%2717 fps97.2%
Shooters World Match Rifle<<locked>>84%49,603 psi90%2769 fps100%
Shooters World Precision<<locked>>86%47,355 psi86%2723 fps99.9%
Shooters World SW4350<<locked>>94%47,398 psi86%2746 fps96.3%
SNPE Vectan SP 11<<locked>>90%49,835 psi90%2828 fps99.6%
SNPE Vectan SP 7<<locked>>82%47,500 psi86%2726 fps98%
SNPE Vectan SP 9<<locked>>84%48,776 psi89%2762 fps99.5%
SNPE Vectan Tubal 3000<<locked>>82%47,369 psi86%2638 fps100%
SNPE Vectan Tubal 5000<<locked>>88%47,776 psi87%2644 fps100%
SNPE Vectan Tubal 7000<<locked>>92%46,717 psi85%2667 fps95.8%
Somchem S335<<locked>>82%47,021 psi85%2641 fps100%
Somchem S341<<locked>>82%47,471 psi86%2726 fps99.3%
Somchem S355<<locked>>90%48,704 psi88%2769 fps99.7%
Somchem S365ᴾ<<locked>>100%49,734 psi90%2881 fps100%
Vihtavuori N133<<locked>>82%47,732 psi87%2631 fps100%
Vihtavuori N135<<locked>>86%49,298 psi89%2713 fps100%
Vihtavuori N140<<locked>>84%46,905 psi85%2677 fps100%
Vihtavuori N150<<locked>>92%49,705 psi90%2746 fps100%
Vihtavuori N160<<locked>>94%47,761 psi87%2772 fps98.5%
Vihtavuori N530<<locked>>82%49,545 psi90%2743 fps100%
Vihtavuori N540<<locked>>86%48,356 psi88%2720 fps100%
Vihtavuori N550<<locked>>96%49,806 psi90%2825 fps98.7%
Vihtavuori N555ᴾ<<locked>>100%41,858 psi76%2749 fps98.1%
Winchester 6.5 StaBALL<<locked>>94%47,848 psi87%2753 fps99.8%
Winchester 748<<locked>>82%49,429 psi90%2789 fps100%
Winchester 760<<locked>>94%48,776 psi89%2828 fps96.4%
Winchester StaBALL HDᴾ<<locked>>100%34,185 psi62%2661 fps97.7%
Winchester StaBALL Match<<locked>>84%48,196 psi87%2766 fps99.7%

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

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%39,987 psi73%2566 fps100%
Accurate 4064<<locked>>80%37,855 psi69%2559 fps99.9%
Accurate 4350<<locked>>86%34,316 psi62%2539 fps95.1%
ADI AR 2206H<<locked>>80%44,251 psi80%2684 fps98.9%
ADI AR 2208<<locked>>80%37,492 psi68%2530 fps96.8%
ADI Benchmark 8208<<locked>>80%46,383 psi84%2697 fps99.8%
Alliant AR-Comp<<locked>>80%46,673 psi85%2684 fps100%
Alliant Power Pro 2000-MR<<locked>>80%40,263 psi73%2710 fps97.4%
Alliant Reloder- TS 15.5<<locked>>80%37,130 psi67%2552 fps98.2%
Alliant Reloder-15<<locked>>80%39,914 psi72%2615 fps97.6%
Alliant Reloder-1644.9 gr86%34,824 psi63%2559 fps95.3%
Alliant Reloder-1745 gr80%31,981 psi58%2510 fps96%
Alliant Reloder-23<<locked>>94%31,807 psi58%2507 fps95.8%
Alliant Reloder-26<<locked>>96%37,159 psi67%2697 fps95.3%
Baschieri & Pellagri 107<<locked>>80%43,410 psi79%2684 fps97.9%
Bofors RP3<<locked>>80%36,434 psi66%2549 fps98.2%
Hodgdon BL-C2<<locked>>80%45,165 psi82%2713 fps99.9%
Hodgdon H380<<locked>>80%37,463 psi68%2556 fps95.6%
Hodgdon H414<<locked>>92%45,585 psi83%2772 fps95.6%
Hodgdon H4895<<locked>>80%44,643 psi81%2697 fps99.3%
Hodgdon Hybrid 100V<<locked>>84%29,689 psi54%2395 fps95%
Hodgdon LEVERevolution<<locked>>80%40,683 psi74%2664 fps99.1%
Hodgdon TrailBoss<<locked>>80%26,121 psi47%1558 fps100%
Hodgdon VARGET<<locked>>80%42,786 psi78%2644 fps99%
IMR 3031<<locked>>80%44,193 psi80%2690 fps100%
IMR 4064<<locked>>80%39,363 psi71%2566 fps97.6%
IMR 4166 Enduron<<locked>>82%44,831 psi81%2644 fps95.3%
IMR 4451 Enduron<<locked>>88%44,773 psi81%2671 fps95.1%
IMR 4831<<locked>>88%35,549 psi65%2549 fps95.6%
IMR 4895<<locked>>80%40,886 psi74%2648 fps98.4%
IMR 8208 XBR<<locked>>80%46,383 psi84%2697 fps99.8%
Lovex D073.6<<locked>>80%43,250 psi78%2664 fps100%
Lovex S060<<locked>>80%44,251 psi80%2625 fps99%
Lovex S062<<locked>>80%39,175 psi71%2569 fps99%
Lovex S065<<locked>>86%38,827 psi70%2559 fps95%
Lovex S070<<locked>>92%44,367 psi81%2690 fps95.5%
Norma 201<<locked>>80%43,004 psi78%2635 fps99.5%
Norma 202<<locked>>80%43,598 psi79%2648 fps100%
Norma 203B<<locked>>80%39,276 psi71%2605 fps98%
Norma URP<<locked>>86%34,838 psi63%2546 fps95.1%
Ramshot Big Game<<locked>>80%38,899 psi71%2618 fps97.7%
Ramshot Hunter<<locked>>92%41,553 psi75%2700 fps95.4%
Ramshot TAC<<locked>>80%46,166 psi84%2697 fps97.3%
Ramshot Wild Boar<<locked>>80%45,730 psi83%2720 fps99.1%
ReloadSwiss RS 14<<locked>>80%26,455 psi48%1598 fps100%
ReloadSwiss RS 50<<locked>>84%43,352 psi79%2651 fps95.6%
ReloadSwiss RS 52<<locked>>80%42,090 psi76%2720 fps98.1%
ReloadSwiss RS 6045 gr80%34,113 psi62%2579 fps99.1%
ReloadSwiss RS 62<<locked>>88%36,651 psi67%2615 fps95.5%
ReloadSwiss RS 70<<locked>>90%39,624 psi72%2687 fps95.7%
Rottweil R 901<<locked>>80%46,847 psi85%2674 fps100%
Rottweil R 902<<locked>>80%40,901 psi74%2585 fps99.2%
Rottweil R 903<<locked>>80%34,301 psi62%2493 fps97.3%
Shooters World Long Rifle<<locked>>86%38,827 psi70%2559 fps95%
Shooters World Match Rifle<<locked>>80%43,250 psi78%2664 fps100%
Shooters World Precision<<locked>>80%39,175 psi71%2569 fps99%
Shooters World SW4350<<locked>>92%44,367 psi81%2690 fps95.5%
SNPE Vectan SP 11<<locked>>80%35,549 psi65%2546 fps96.8%
SNPE Vectan SP 7<<locked>>80%44,440 psi81%2671 fps97.4%
SNPE Vectan SP 9<<locked>>80%42,801 psi78%2654 fps98.7%
SNPE Vectan Tubal 3000<<locked>>80%44,512 psi81%2592 fps100%
SNPE Vectan Tubal 5000<<locked>>80%36,956 psi67%2454 fps100%
SNPE Vectan Tubal 7000<<locked>>90%43,627 psi79%2612 fps95%
Somchem S335<<locked>>80%44,048 psi80%2592 fps100%
Somchem S341<<locked>>80%44,164 psi80%2667 fps98.9%
Somchem S355<<locked>>80%35,143 psi64%2500 fps97.3%
Somchem S365<<locked>>82%27,122 psi49%2375 fps95.3%
Vihtavuori N133<<locked>>80%44,904 psi81%2585 fps100%
Vihtavuori N135<<locked>>80%40,437 psi73%2569 fps100%
Vihtavuori N140<<locked>>80%41,220 psi75%2579 fps100%
Vihtavuori N150<<locked>>80%33,489 psi61%2441 fps98.1%
Vihtavuori N160<<locked>>86%36,463 psi66%2549 fps95.6%
Vihtavuori N530<<locked>>80%46,282 psi84%2687 fps99.8%
Vihtavuori N540<<locked>>80%39,639 psi72%2566 fps99.9%
Vihtavuori N550<<locked>>86%35,839 psi65%2546 fps95.2%
Vihtavuori N555<<locked>>94%34,258 psi62%2582 fps95.8%
Winchester 6.5 StaBALL<<locked>>80%29,689 psi54%2359 fps95.1%
Winchester 748<<locked>>80%46,180 psi84%2736 fps100%
Winchester 760<<locked>>92%45,585 psi83%2772 fps95.6%
Winchester StaBALL HD<<locked>>96%29,950 psi54%2523 fps95.1%
Winchester StaBALL Match<<locked>>80%42,177 psi77%2654 fps99%

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 104 powders for 7 x 65 R Brenneke loaded with the .284 | 140gr | Barnes MRX BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,752 fps to 2,897 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (380 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Reloder-16 rank at the top here: for 7 x 65 R Brenneke with the .284 | 140gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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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