Load data for 7 x 65 R Brenneke + .284 | 150gr | Hornady ECX

7 x 65 R Brenneke cartridge drawing
Hornady logo

Load Specifications

Bullet Manufacturer:Hornady
Bullet Weight:150 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:1:10.5

Load data in caliber 7 x 65 R Brenneke with .284 | 150gr | Hornady ECX bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Ramshot Hunter.

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: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>86%49,734 psi90%2621 fps100%
Accurate 2700<<locked>>86%49,530 psi90%2618 fps96.1%
Accurate 4064<<locked>>86%46,847 psi85%2621 fps100%
Accurate 4350<<locked>>96%49,647 psi90%2743 fps99.2%
ADI AR 2206H<<locked>>82%47,645 psi86%2644 fps99.6%
ADI AR 2208<<locked>>88%48,675 psi88%2648 fps99.4%
Alliant Power Pro 2000-MR<<locked>>84%46,673 psi85%2743 fps99.2%
Alliant Reloder- TS 15.5<<locked>>88%48,472 psi88%2667 fps99.9%
Alliant Reloder-15<<locked>>86%48,863 psi89%2687 fps99.5%
Alliant Reloder-16<<locked>>96%48,283 psi88%2749 fps99.3%
Alliant Reloder-17<<locked>>92%48,733 psi88%2779 fps100%
Alliant Reloder-23ᴾ<<locked>>100%38,798 psi70%2592 fps98.8%
Alliant Reloder-26ᴾ<<locked>>100%43,482 psi79%2749 fps98.1%
Baschieri & Pellagri 107<<locked>>82%47,079 psi85%2654 fps99%
Bofors RP3<<locked>>88%48,718 psi88%2684 fps100%
Bofors RP7<<locked>>92%49,037 psi89%2651 fps96.3%
Hodgdon BL-C2<<locked>>82%48,733 psi88%2674 fps100%
Hodgdon H380<<locked>>88%49,806 psi90%2694 fps98.9%
Hodgdon H414<<locked>>94%49,255 psi89%2736 fps97.1%
Hodgdon H4895<<locked>>82%48,138 psi87%2657 fps99.8%
Hodgdon Hybrid 100V<<locked>>98%47,790 psi87%2684 fps99.8%
Hodgdon LEVERevolution<<locked>>84%47,108 psi85%2684 fps99.9%
Hodgdon Superformance<<locked>>94%49,559 psi90%2766 fps96.6%
Hodgdon TrailBossᴾ<<locked>>100%35,404 psi64%1673 fps100%
Hodgdon VARGET<<locked>>84%49,371 psi90%2661 fps99.9%
IMR 3031<<locked>>82%48,037 psi87%2644 fps100%
IMR 4064<<locked>>86%48,095 psi87%2631 fps99.4%
IMR 4166 Enduron<<locked>>84%48,037 psi87%2605 fps96.6%
IMR 4350<<locked>>96%49,443 psi90%2680 fps96.4%
IMR 4451 Enduron<<locked>>90%47,964 psi87%2635 fps96.5%
IMR 4831<<locked>>96%47,311 psi86%2687 fps99%
IMR 4895<<locked>>84%47,079 psi85%2664 fps99.6%
Lovex D073.6<<locked>>82%46,920 psi85%2625 fps100%
Lovex S060<<locked>>82%47,442 psi86%2582 fps99.6%
Lovex S062<<locked>>86%47,834 psi87%2628 fps100%
Lovex S065<<locked>>92%47,326 psi86%2628 fps97.8%
Lovex S070<<locked>>94%47,877 psi87%2657 fps96.9%
Norma 201<<locked>>84%49,545 psi90%2644 fps100%
Norma 202<<locked>>82%46,949 psi85%2602 fps100%
Norma 203B<<locked>>86%48,138 psi87%2674 fps99.7%
Norma URP<<locked>>96%48,979 psi89%2733 fps99.1%
Ramshot Big Game<<locked>>86%48,385 psi88%2697 fps99.6%
Ramshot Hunter<<locked>>96%48,051 psi87%2726 fps97.6%
Ramshot Wild Boar<<locked>>82%49,574 psi90%2684 fps99.7%
ReloadSwiss RS 14ᴾ<<locked>>100%35,737 psi65%1709 fps100%
ReloadSwiss RS 50<<locked>>86%46,818 psi85%2621 fps97%
ReloadSwiss RS 52<<locked>>84%48,979 psi89%2746 fps99.5%
ReloadSwiss RS 60<<locked>>90%48,762 psi88%2785 fps100%
ReloadSwiss RS 62<<locked>>96%49,255 psi89%2762 fps99%
ReloadSwiss RS 70<<locked>>96%49,255 psi89%2785 fps98.8%
Rottweil R 902<<locked>>84%47,079 psi85%2598 fps99.9%
Rottweil R 903<<locked>>90%48,602 psi88%2674 fps99.9%
Rottweil R 907<<locked>>92%49,037 psi89%2651 fps96.3%
Shooters World Long Rifle<<locked>>92%47,326 psi86%2628 fps97.8%
Shooters World Match Rifle<<locked>>82%46,920 psi85%2625 fps100%
Shooters World Precision<<locked>>86%47,834 psi87%2628 fps100%
Shooters World SW4350<<locked>>94%47,877 psi87%2657 fps96.9%
SNPE Vectan SP 11<<locked>>88%46,992 psi85%2677 fps99.5%
SNPE Vectan SP 7<<locked>>82%48,283 psi88%2641 fps98.6%
SNPE Vectan SP 9<<locked>>84%49,182 psi89%2667 fps99.7%
SNPE Vectan Tubal 3000<<locked>>82%47,993 psi87%2546 fps100%
SNPE Vectan Tubal 5000<<locked>>88%48,182 psi87%2549 fps100%
SNPE Vectan Tubal 7000<<locked>>92%47,108 psi85%2579 fps96.4%
Somchem S335<<locked>>82%47,529 psi86%2546 fps100%
Somchem S341<<locked>>82%47,993 psi87%2635 fps99.6%
Somchem S355<<locked>>90%49,226 psi89%2677 fps99.9%
Somchem S365<<locked>>98%46,963 psi85%2736 fps100%
Vihtavuori N133<<locked>>82%48,385 psi88%2536 fps100%
Vihtavuori N135<<locked>>86%49,661 psi90%2612 fps100%
Vihtavuori N140<<locked>>84%47,326 psi86%2582 fps100%
Vihtavuori N150<<locked>>90%47,297 psi86%2608 fps100%
Vihtavuori N160<<locked>>94%48,051 psi87%2677 fps98.9%
Vihtavuori N540<<locked>>86%48,791 psi89%2625 fps100%
Vihtavuori N550<<locked>>94%47,297 psi86%2684 fps98.7%
Vihtavuori N555ᴾ<<locked>>100%42,467 psi77%2664 fps98.7%
Winchester 6.5 StaBALL<<locked>>94%48,240 psi88%2661 fps99.9%
Winchester 760<<locked>>94%49,574 psi90%2743 fps97.1%
Winchester StaBALL HDᴾ<<locked>>100%34,621 psi63%2589 fps98.6%
Winchester StaBALL Match<<locked>>84%49,037 psi89%2677 fps99.9%

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%40,712 psi74%2484 fps100%
Accurate 2700<<locked>>84%46,296 psi84%2562 fps95.3%
Accurate 4064<<locked>>80%38,566 psi70%2477 fps100%
Accurate 4350<<locked>>86%34,693 psi63%2457 fps95.9%
ADI AR 2206H<<locked>>80%44,759 psi81%2595 fps99.3%
ADI AR 2208<<locked>>80%38,072 psi69%2451 fps97.5%
Alliant Power Pro 2000-MR<<locked>>80%40,524 psi74%2621 fps98%
Alliant Reloder- TS 15.5<<locked>>80%37,521 psi68%2467 fps98.7%
Alliant Reloder-15<<locked>>80%40,408 psi73%2533 fps98.2%
Alliant Reloder-1642 gr84%33,040 psi60%2425 fps95.2%
Alliant Reloder-17<<locked>>80%32,372 psi59%2434 fps96.9%
Alliant Reloder-23<<locked>>92%30,182 psi55%2379 fps95.7%
Alliant Reloder-26<<locked>>94%35,099 psi64%2559 fps95.1%
Baschieri & Pellagri 107<<locked>>80%44,005 psi80%2598 fps98.5%
Bofors RP3<<locked>>80%36,985 psi67%2467 fps98.7%
Bofors RP7<<locked>>90%46,050 psi84%2598 fps95.5%
Hodgdon BL-C2<<locked>>80%45,484 psi83%2618 fps100%
Hodgdon H380<<locked>>80%38,058 psi69%2474 fps96.4%
Hodgdon H414<<locked>>90%43,076 psi78%2625 fps95.5%
Hodgdon H4895<<locked>>80%45,165 psi82%2605 fps99.6%
Hodgdon Hybrid 100V<<locked>>82%28,239 psi51%2270 fps95%
Hodgdon LEVERevolution<<locked>>80%41,162 psi75%2575 fps99.4%
Hodgdon Superformance<<locked>>92%46,209 psi84%2707 fps95.7%
Hodgdon TrailBoss<<locked>>80%26,208 psi48%1490 fps100%
Hodgdon VARGET<<locked>>80%43,236 psi78%2556 fps99.4%
IMR 3031<<locked>>80%44,904 psi81%2598 fps100%
IMR 4064<<locked>>80%39,943 psi72%2484 fps98.2%
IMR 4166 Enduron<<locked>>80%42,453 psi77%2503 fps95.2%
IMR 4350<<locked>>94%46,485 psi84%2628 fps95.7%
IMR 4451 Enduron<<locked>>86%42,438 psi77%2530 fps95%
IMR 4831<<locked>>86%33,881 psi61%2425 fps95.7%
IMR 4895<<locked>>80%41,394 psi75%2559 fps98.9%
Lovex D073.6<<locked>>80%43,671 psi79%2572 fps100%
Lovex S060<<locked>>80%44,585 psi81%2530 fps99.3%
Lovex S062<<locked>>80%39,523 psi72%2480 fps99.3%
Lovex S065<<locked>>84%36,883 psi67%2425 fps95%
Lovex S070<<locked>>90%42,264 psi77%2556 fps95.4%
Norma 201<<locked>>80%43,671 psi79%2546 fps99.8%
Norma 202<<locked>>80%44,048 psi80%2552 fps100%
Norma 203B<<locked>>80%39,784 psi72%2520 fps98.5%
Norma URP<<locked>>86%35,331 psi64%2467 fps95.9%
Ramshot Big Game<<locked>>80%39,204 psi71%2530 fps98.2%
Ramshot Hunter47.7 gr90%39,334 psi71%2559 fps95.3%
Ramshot Wild Boar<<locked>>80%46,311 psi84%2628 fps99.4%
ReloadSwiss RS 14<<locked>>80%26,600 psi48%1529 fps100%
ReloadSwiss RS 50<<locked>>82%41,118 psi75%2513 fps95.5%
ReloadSwiss RS 52<<locked>>80%42,612 psi77%2631 fps98.6%
ReloadSwiss RS 60<<locked>>80%34,505 psi63%2500 fps99.5%
ReloadSwiss RS 62<<locked>>86%34,780 psi63%2480 fps95.5%
ReloadSwiss RS 7048.1 gr88%37,318 psi68%2543 fps95.5%
Rottweil R 902<<locked>>80%41,481 psi75%2497 fps99.5%
Rottweil R 903<<locked>>80%34,737 psi63%2411 fps97.9%
Rottweil R 907<<locked>>90%46,050 psi84%2598 fps95.5%
Shooters World Long Rifle<<locked>>84%36,883 psi67%2425 fps95%
Shooters World Match Rifle<<locked>>80%43,671 psi79%2572 fps100%
Shooters World Precision<<locked>>80%39,523 psi72%2480 fps99.3%
Shooters World SW4350<<locked>>90%42,264 psi77%2556 fps95.4%
SNPE Vectan SP 11<<locked>>80%35,926 psi65%2464 fps97.5%
SNPE Vectan SP 7<<locked>>80%45,034 psi82%2585 fps98%
SNPE Vectan SP 9<<locked>>80%43,178 psi78%2562 fps99.1%
SNPE Vectan Tubal 3000<<locked>>80%45,005 psi82%2500 fps100%
SNPE Vectan Tubal 5000<<locked>>80%37,391 psi68%2369 fps100%
SNPE Vectan Tubal 7000<<locked>>90%44,193 psi80%2530 fps95.7%
Somchem S335<<locked>>80%44,686 psi81%2503 fps100%
Somchem S341<<locked>>80%44,788 psi81%2582 fps99.2%
Somchem S355<<locked>>80%35,737 psi65%2421 fps98%
Somchem S365<<locked>>80%25,657 psi47%2247 fps95.2%
Vihtavuori N133<<locked>>80%45,411 psi82%2493 fps100%
Vihtavuori N135<<locked>>80%40,973 psi74%2480 fps100%
Vihtavuori N140<<locked>>80%41,669 psi76%2490 fps100%
Vihtavuori N150<<locked>>80%33,895 psi62%2359 fps98.6%
Vihtavuori N160<<locked>>84%34,476 psi63%2415 fps95.5%
Vihtavuori N540<<locked>>80%40,219 psi73%2480 fps100%
Vihtavuori N550<<locked>>84%33,997 psi62%2415 fps95.1%
Vihtavuori N555<<locked>>92%32,474 psi59%2451 fps95.8%
Winchester 6.5 StaBALL<<locked>>80%30,095 psi55%2287 fps96.1%
Winchester 760<<locked>>90%43,352 psi79%2631 fps95.6%
Winchester StaBALL HD<<locked>>96%30,342 psi55%2461 fps96.4%
Winchester StaBALL Match<<locked>>80%42,670 psi77%2566 fps99.4%

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 79 powders for 7 x 65 R Brenneke loaded with the .284 | 150gr | Hornady ECX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,785 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,785 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (380 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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-16, ReloadSwiss RS 70, Ramshot Hunter rank at the top here: for 7 x 65 R Brenneke with the .284 | 150gr | Hornady ECX 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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