Load data for 7 mm Exp. Rem. + .284 | 155gr | Geco EXPRESS

7 mm Exp. Rem. cartridge drawing
Geco logo

Load Specifications

Bullet Manufacturer:Geco
Bullet Weight:155 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:67.5 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:22"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:11.0

Load data in caliber 7 mm Exp. Rem. with .284 | 155gr | Geco EXPRESS bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.

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: 22"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>84%52,446 psi89%2585 fps100%
Accurate 2700<<locked>>84%50,923 psi87%2585 fps96.7%
Accurate 3100ᴾ<<locked>>100%46,572 psi79%2602 fps97.6%
Accurate 4064<<locked>>86%52,837 psi90%2635 fps100%
Accurate 4350<<locked>>94%52,794 psi90%2720 fps99.6%
ADI AR 2206H<<locked>>82%52,344 psi89%2654 fps99.9%
ADI AR 2208<<locked>>86%50,270 psi86%2608 fps99.6%
Alliant Power Pro 2000-MR<<locked>>84%52,054 psi89%2769 fps99.8%
Alliant Reloder- TS 15.5<<locked>>86%50,778 psi86%2638 fps100%
Alliant Reloder-15<<locked>>84%50,865 psi87%2651 fps99.7%
Alliant Reloder-16<<locked>>94%50,343 psi86%2720 fps99.7%
Alliant Reloder-17<<locked>>90%51,227 psi87%2749 fps100%
Alliant Reloder-19ᴾ<<locked>>100%52,997 psi90%2736 fps96.4%
Alliant Reloder-23ᴾ<<locked>>100%44,135 psi75%2628 fps99.7%
Alliant Reloder-26ᴾ<<locked>>100%49,777 psi85%2795 fps99.4%
Baschieri & Pellagri 107<<locked>>82%52,011 psi89%2667 fps99.6%
Bofors RP3<<locked>>86%50,981 psi87%2648 fps100%
Bofors RP7<<locked>>90%51,097 psi87%2621 fps97%
Hodgdon H380<<locked>>86%51,605 psi88%2657 fps99.2%
Hodgdon H414<<locked>>92%51,779 psi88%2713 fps97.8%
Hodgdon H4350<<locked>>90%52,040 psi89%2674 fps96.5%
Hodgdon H4895<<locked>>82%52,910 psi90%2664 fps100%
Hodgdon Hybrid 100V<<locked>>96%50,517 psi86%2657 fps100%
Hodgdon LEVERevolution<<locked>>84%52,794 psi90%2700 fps100%
Hodgdon Superformance<<locked>>92%51,590 psi88%2740 fps97.4%
Hodgdon TrailBossᴾ<<locked>>100%35,868 psi61%1657 fps100%
Hodgdon VARGET<<locked>>82%50,792 psi86%2621 fps100%
IMR 4064<<locked>>86%52,924 psi90%2644 fps99.9%
IMR 4166 Enduron<<locked>>84%52,649 psi90%2625 fps97.8%
IMR 4350<<locked>>94%51,517 psi88%2651 fps97.1%
IMR 4451 Enduron<<locked>>90%52,707 psi90%2651 fps97.8%
IMR 4831<<locked>>94%49,792 psi85%2657 fps99.4%
IMR 4895<<locked>>84%52,199 psi89%2680 fps100%
Lovex D073.6<<locked>>82%52,417 psi89%2635 fps100%
Lovex S060<<locked>>82%51,706 psi88%2589 fps99.9%
Lovex S062<<locked>>84%49,951 psi85%2595 fps100%
Lovex S065<<locked>>92%52,475 psi89%2648 fps98.8%
Lovex S070<<locked>>92%50,125 psi85%2631 fps97.6%
Norma 201<<locked>>82%51,401 psi88%2608 fps100%
Norma 202<<locked>>82%51,851 psi88%2608 fps100%
Norma 203B<<locked>>84%50,169 psi85%2638 fps99.9%
Norma 204<<locked>>94%51,706 psi88%2690 fps95.8%
Norma MRPᴾ<<locked>>100%49,356 psi84%2753 fps97.2%
Norma URP<<locked>>94%51,677 psi88%2703 fps99.5%
Ramshot Big Game<<locked>>84%50,459 psi86%2661 fps99.8%
Ramshot Hunter<<locked>>94%50,328 psi86%2697 fps98.3%
ReloadSwiss RS 14ᴾ<<locked>>100%36,564 psi62%1696 fps100%
ReloadSwiss RS 50<<locked>>86%51,851 psi88%2644 fps98.2%
ReloadSwiss RS 52<<locked>>82%51,314 psi87%2710 fps99.8%
ReloadSwiss RS 60<<locked>>88%51,082 psi87%2749 fps100%
ReloadSwiss RS 62<<locked>>94%52,301 psi89%2736 fps99.5%
ReloadSwiss RS 70<<locked>>94%51,401 psi88%2759 fps99.3%
Rottweil R 902<<locked>>84%51,967 psi88%2608 fps100%
Rottweil R 903<<locked>>88%51,169 psi87%2644 fps100%
Rottweil R 905ᴾ<<locked>>100%52,040 psi89%2720 fps96.4%
Rottweil R 907<<locked>>90%51,097 psi87%2621 fps97%
Shooters World Long Rifle<<locked>>92%52,475 psi89%2648 fps98.8%
Shooters World Match Rifle<<locked>>82%52,417 psi89%2635 fps100%
Shooters World Precision<<locked>>84%49,951 psi85%2595 fps100%
Shooters World SW4350<<locked>>92%50,125 psi85%2631 fps97.6%
SNPE Vectan SP 11<<locked>>88%52,678 psi90%2700 fps100%
SNPE Vectan SP 9<<locked>>82%50,879 psi87%2628 fps99.9%
SNPE Vectan Tubal 3000<<locked>>82%52,431 psi89%2549 fps100%
SNPE Vectan Tubal 5000<<locked>>88%52,910 psi90%2552 fps100%
SNPE Vectan Tubal 7000<<locked>>92%52,301 psi89%2605 fps97.8%
SNPE Vectan Tubal 8000ᴾ<<locked>>100%51,547 psi88%2717 fps96.3%
Somchem S335<<locked>>82%52,156 psi89%2549 fps100%
Somchem S341<<locked>>82%52,939 psi90%2648 fps99.9%
Somchem S355<<locked>>88%51,503 psi88%2644 fps100%
Somchem S365<<locked>>96%50,212 psi85%2710 fps100%
Somchem S385ᴾ<<locked>>100%52,765 psi90%2700 fps97.3%
Vihtavuori N133<<locked>>82%52,823 psi90%2536 fps100%
Vihtavuori N135<<locked>>84%51,822 psi88%2575 fps100%
Vihtavuori N140<<locked>>84%52,286 psi89%2589 fps100%
Vihtavuori N150<<locked>>90%52,663 psi90%2621 fps100%
Vihtavuori N160<<locked>>92%50,647 psi86%2651 fps99.3%
Vihtavuori N540<<locked>>84%50,517 psi86%2585 fps100%
Vihtavuori N550<<locked>>94%53,098 psi90%2707 fps99.5%
Vihtavuori N555ᴾ<<locked>>100%49,139 psi84%2703 fps99.6%
Winchester 6.5 StaBALL<<locked>>92%50,285 psi86%2628 fps100%
Winchester 760<<locked>>92%52,069 psi89%2717 fps97.8%
Winchester StaBALL HDᴾ<<locked>>100%39,537 psi67%2651 fps99.9%
Winchester StaBALL Match<<locked>>82%50,865 psi87%2638 fps100%

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

Start Load - Barrel Length: 22"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%46,180 psi79%2497 fps100%
Accurate 2700<<locked>>80%44,889 psi76%2480 fps95.3%
Accurate 3100<<locked>>94%38,101 psi65%2444 fps95.2%
Accurate 4064<<locked>>80%43,729 psi74%2497 fps100%
Accurate 4350<<locked>>80%32,677 psi56%2336 fps95.2%
ADI AR 2206H<<locked>>80%49,400 psi84%2608 fps99.8%
ADI AR 2208<<locked>>80%41,945 psi71%2464 fps98.5%
Alliant Power Pro 2000-MR<<locked>>80%45,353 psi77%2648 fps99.1%
Alliant Reloder- TS 15.5<<locked>>80%41,829 psi71%2484 fps99.5%
Alliant Reloder-15<<locked>>80%45,020 psi77%2549 fps99.1%
Alliant Reloder-16<<locked>>80%32,518 psi55%2343 fps95.2%
Alliant Reloder-1745.7 gr80%36,463 psi62%2467 fps98.4%
Alliant Reloder-19<<locked>>98%49,995 psi85%2687 fps95.7%
Alliant Reloder-23<<locked>>88%30,342 psi52%2316 fps96%
Alliant Reloder-26<<locked>>90%34,983 psi60%2487 fps95.3%
Baschieri & Pellagri 107<<locked>>80%48,805 psi83%2615 fps99.3%
Bofors RP3<<locked>>80%41,800 psi71%2493 fps99.5%
Bofors RP7<<locked>>86%45,194 psi77%2520 fps95.6%
Hodgdon H380<<locked>>80%42,496 psi72%2497 fps97.7%
Hodgdon H414<<locked>>86%42,322 psi72%2543 fps95.5%
Hodgdon H4350<<locked>>86%45,861 psi78%2569 fps95%
Hodgdon H4895<<locked>>80%49,937 psi85%2618 fps100%
Hodgdon Hybrid 100V<<locked>>80%29,950 psi51%2251 fps96.1%
Hodgdon LEVERevolution<<locked>>80%46,079 psi78%2595 fps99.9%
Hodgdon Superformance<<locked>>88%44,773 psi76%2618 fps95.6%
Hodgdon TrailBoss<<locked>>80%26,905 psi46%1480 fps100%
Hodgdon VARGET<<locked>>80%47,645 psi81%2569 fps99.8%
IMR 4064<<locked>>80%44,092 psi75%2497 fps99.1%
IMR 4166 Enduron<<locked>>80%46,441 psi79%2520 fps96.6%
IMR 4350<<locked>>90%45,397 psi77%2546 fps95.7%
IMR 4451 Enduron<<locked>>82%41,292 psi70%2448 fps95%
IMR 4831<<locked>>82%33,866 psi58%2349 fps95.8%
IMR 4895<<locked>>80%46,166 psi79%2579 fps99.6%
Lovex D073.6<<locked>>80%49,081 psi84%2589 fps100%
Lovex S060<<locked>>80%48,849 psi83%2543 fps99.8%
Lovex S062<<locked>>80%44,208 psi75%2500 fps99.9%
Lovex S065<<locked>>80%36,318 psi62%2349 fps95%
Lovex S070<<locked>>86%41,669 psi71%2477 fps95.5%
Norma 201<<locked>>80%48,254 psi82%2556 fps100%
Norma 202<<locked>>80%48,573 psi83%2559 fps100%
Norma 203B<<locked>>80%44,396 psi76%2539 fps99.4%
Norma 204<<locked>>92%48,370 psi82%2635 fps95%
Norma MRP<<locked>>96%43,004 psi73%2631 fps95.4%
Norma URP<<locked>>80%32,808 psi56%2336 fps95.1%
Ramshot Big Game<<locked>>80%44,106 psi75%2552 fps99.2%
Ramshot Hunter<<locked>>86%38,928 psi66%2484 fps95.4%
ReloadSwiss RS 14<<locked>>80%27,369 psi47%1516 fps100%
ReloadSwiss RS 50<<locked>>80%42,670 psi73%2480 fps96.2%
ReloadSwiss RS 52<<locked>>80%48,022 psi82%2657 fps99.5%
ReloadSwiss RS 6045.7 gr80%38,769 psi66%2530 fps100%
ReloadSwiss RS 62<<locked>>82%34,621 psi59%2405 fps95.5%
ReloadSwiss RS 7048.7 gr84%36,564 psi62%2461 fps95.5%
Rottweil R 902<<locked>>80%45,992 psi78%2513 fps99.9%
Rottweil R 903<<locked>>80%39,479 psi67%2441 fps99.1%
Rottweil R 905<<locked>>98%48,921 psi83%2667 fps95.6%
Rottweil R 907<<locked>>86%45,194 psi77%2520 fps95.6%
Shooters World Long Rifle<<locked>>80%36,318 psi62%2349 fps95%
Shooters World Match Rifle<<locked>>80%49,081 psi84%2589 fps100%
Shooters World Precision<<locked>>80%44,208 psi75%2500 fps99.9%
Shooters World SW4350<<locked>>86%41,669 psi71%2477 fps95.5%
SNPE Vectan SP 11<<locked>>80%40,451 psi69%2490 fps98.7%
SNPE Vectan SP 9<<locked>>80%47,790 psi81%2579 fps99.7%
SNPE Vectan Tubal 3000<<locked>>80%49,385 psi84%2507 fps100%
SNPE Vectan Tubal 5000<<locked>>80%41,408 psi70%2379 fps100%
SNPE Vectan Tubal 7000<<locked>>86%43,091 psi73%2448 fps95.7%
SNPE Vectan Tubal 8000<<locked>>98%48,457 psi82%2664 fps95.5%
Somchem S335<<locked>>80%48,994 psi83%2503 fps100%
Somchem S341<<locked>>80%49,719 psi85%2598 fps99.8%
Somchem S355<<locked>>80%40,001 psi68%2444 fps99%
Somchem S365<<locked>>80%29,385 psi50%2290 fps97.3%
Somchem S385<<locked>>94%43,366 psi74%2539 fps95%
Vihtavuori N133<<locked>>80%49,806 psi85%2493 fps100%
Vihtavuori N135<<locked>>80%45,876 psi78%2487 fps100%
Vihtavuori N140<<locked>>80%46,224 psi79%2500 fps100%
Vihtavuori N150<<locked>>80%38,189 psi65%2382 fps99.5%
Vihtavuori N160<<locked>>80%34,243 psi58%2343 fps95.6%
Vihtavuori N540<<locked>>80%44,527 psi76%2490 fps100%
Vihtavuori N550<<locked>>80%33,649 psi57%2336 fps95.1%
Vihtavuori N555<<locked>>86%30,951 psi53%2336 fps95.2%
Winchester 6.5 StaBALL<<locked>>80%33,707 psi57%2316 fps97.7%
Winchester 760<<locked>>86%42,569 psi72%2549 fps95.6%
Winchester StaBALL HD<<locked>>90%28,601 psi49%2336 fps95.5%
Winchester StaBALL Match<<locked>>80%47,413 psi81%2582 fps99.9%

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 83 powders for 7 mm Exp. Rem. loaded with the .284 | 155gr | Geco EXPRESS. Alliant Reloder-26 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,795 fps. Accurate 3100 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (405 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, Alliant Reloder-23 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 7 mm Exp. Rem. with the .284 | 155gr | Geco EXPRESS 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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