Load data for 7 mm Exp. Rem. + .284 | 142gr | Lehigh Defense Controlled Chaos

7 mm Exp. Rem. cartridge drawing
Lehigh Defense logo

Load Specifications

Bullet Manufacturer:Lehigh Defense
Bullet Weight:142 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:1:9.5

Load data in caliber 7 mm Exp. Rem. with .284 | 142gr | Lehigh Defense Controlled Chaos bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 and Alliant Reloder-17.

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 2015<<locked>>82%52,388 psi89%2661 fps100%
Accurate 2495<<locked>>86%50,952 psi87%2677 fps100%
Accurate 2520<<locked>>82%50,633 psi86%2720 fps100%
Accurate 2520<<locked>>82%50,633 psi86%2720 fps100%
Accurate 4064<<locked>>88%51,213 psi87%2723 fps100%
Accurate 4350<<locked>>96%50,372 psi86%2785 fps98.7%
ADI AR 2206H<<locked>>84%51,314 psi87%2743 fps99.5%
ADI AR 2208<<locked>>90%52,344 psi89%2746 fps99.3%
ADI Benchmark 8208<<locked>>82%50,546 psi86%2700 fps99.9%
Alliant AR-Comp<<locked>>82%51,271 psi87%2687 fps100%
Alliant Power Pro 2000-MR<<locked>>86%50,691 psi86%2848 fps99.2%
Alliant Reloder- TS 15.5<<locked>>90%52,547 psi89%2772 fps99.9%
Alliant Reloder-15<<locked>>88%53,011 psi90%2789 fps99.5%
Alliant Reloder-16<<locked>>98%51,822 psi88%2844 fps99.2%
Alliant Reloder-17<<locked>>94%52,881 psi90%2881 fps99.9%
Alliant Reloder-23ᴾ<<locked>>100%39,581 psi67%2631 fps98.1%
Alliant Reloder-26ᴾ<<locked>>100%44,396 psi76%2789 fps97.3%
Baschieri & Pellagri 107<<locked>>84%50,836 psi87%2753 fps98.9%
Bofors RP3<<locked>>90%53,011 psi90%2785 fps100%
Bofors RP7<<locked>>94%52,953 psi90%2746 fps96.2%
Hodgdon Benchmark<<locked>>82%52,098 psi89%2687 fps100%
Hodgdon BL-C2<<locked>>82%49,516 psi84%2723 fps100%
Hodgdon H380<<locked>>88%50,444 psi86%2740 fps98.3%
Hodgdon H414<<locked>>92%51,213 psi87%2802 fps96.5%
Hodgdon H4895<<locked>>84%51,793 psi88%2753 fps99.8%
Hodgdon Hybrid 100Vᴾ<<locked>>100%51,488 psi88%2779 fps99.8%
Hodgdon LEVERevolution<<locked>>88%51,329 psi87%2789 fps99.9%
Hodgdon TrailBossᴾ<<locked>>100%35,418 psi60%1713 fps100%
Hodgdon VARGET<<locked>>88%51,953 psi88%2743 fps99.8%
IMR 3031<<locked>>86%50,444 psi86%2726 fps100%
IMR 4064<<locked>>90%51,329 psi87%2720 fps99.3%
IMR 4166 Enduron<<locked>>90%50,778 psi86%2687 fps96.3%
IMR 4451 Enduron<<locked>>92%51,634 psi88%2730 fps96.4%
IMR 4831ᴾ<<locked>>100%48,559 psi83%2740 fps98.5%
IMR 4895<<locked>>86%50,923 psi87%2766 fps99.6%
IMR 8208 XBR<<locked>>82%50,546 psi86%2700 fps99.9%
Lovex D073.6<<locked>>84%50,981 psi87%2726 fps100%
Lovex S060<<locked>>84%51,039 psi87%2677 fps99.5%
Lovex S062<<locked>>88%51,793 psi88%2730 fps100%
Lovex S065<<locked>>94%51,184 psi87%2726 fps97.7%
Lovex S070<<locked>>96%51,938 psi88%2759 fps96.8%
Norma 201<<locked>>84%50,401 psi86%2697 fps99.9%
Norma 202<<locked>>84%50,705 psi86%2700 fps100%
Norma 203B<<locked>>88%52,228 psi89%2776 fps99.7%
Norma URP<<locked>>98%53,055 psi90%2831 fps99%
Ramshot Big Game<<locked>>88%52,417 psi89%2795 fps99.6%
Ramshot Hunter<<locked>>98%51,938 psi88%2825 fps97.5%
Ramshot TAC<<locked>>82%50,560 psi86%2710 fps97.8%
Ramshot Wild Boar<<locked>>82%50,227 psi86%2730 fps99.4%
ReloadSwiss RS 14ᴾ<<locked>>100%36,056 psi61%1755 fps100%
ReloadSwiss RS 50<<locked>>88%50,836 psi87%2723 fps97%
ReloadSwiss RS 52<<locked>>84%49,661 psi85%2792 fps99.1%
ReloadSwiss RS 60<<locked>>92%52,707 psi90%2887 fps100%
ReloadSwiss RS 62<<locked>>96%50,169 psi85%2808 fps98.5%
ReloadSwiss RS 70<<locked>>96%49,908 psi85%2828 fps98.1%
Rottweil R 901<<locked>>82%51,430 psi88%2684 fps100%
Rottweil R 902<<locked>>86%50,923 psi87%2697 fps99.9%
Rottweil R 903<<locked>>92%52,895 psi90%2779 fps99.9%
Rottweil R 907<<locked>>94%52,953 psi90%2746 fps96.2%
Shooters World Long Rifle<<locked>>94%51,184 psi87%2726 fps97.7%
Shooters World Match Rifle<<locked>>84%50,981 psi87%2726 fps100%
Shooters World Precision<<locked>>88%51,793 psi88%2730 fps100%
Shooters World SW4350<<locked>>96%51,938 psi88%2759 fps96.8%
SNPE Vectan SP 11<<locked>>90%50,981 psi87%2779 fps99.5%
SNPE Vectan SP 7<<locked>>84%52,373 psi89%2743 fps98.5%
SNPE Vectan SP 9<<locked>>86%53,142 psi90%2769 fps99.7%
SNPE Vectan Tubal 3000<<locked>>84%51,706 psi88%2644 fps100%
SNPE Vectan Tubal 5000<<locked>>90%51,808 psi88%2644 fps100%
SNPE Vectan Tubal 7000<<locked>>94%51,256 psi87%2677 fps96.4%
Somchem S335<<locked>>84%51,300 psi87%2644 fps100%
Somchem S341<<locked>>84%51,822 psi88%2733 fps99.6%
Somchem S355<<locked>>92%53,026 psi90%2772 fps99.9%
Somchem S365ᴾ<<locked>>100%51,126 psi87%2838 fps100%
Unknown powder<<locked>>94%50,894 psi87%2789 fps98.3%
Vihtavuori N133<<locked>>84%51,982 psi88%2635 fps100%
Vihtavuori N135<<locked>>86%50,459 psi86%2667 fps100%
Vihtavuori N140<<locked>>86%51,184 psi87%2684 fps100%
Vihtavuori N150<<locked>>92%51,227 psi87%2710 fps100%
Vihtavuori N160<<locked>>96%52,054 psi89%2776 fps98.8%
Vihtavuori N530<<locked>>82%50,850 psi87%2700 fps99.9%
Vihtavuori N540<<locked>>88%52,750 psi90%2723 fps100%
Vihtavuori N550<<locked>>96%51,111 psi87%2779 fps98.6%
Vihtavuori N555ᴾ<<locked>>100%43,395 psi74%2707 fps98.1%
Winchester 6.5 StaBALL<<locked>>96%52,286 psi89%2759 fps99.9%
Winchester 760<<locked>>92%51,213 psi87%2802 fps96.5%
Winchester StaBALL HDᴾ<<locked>>100%35,433 psi60%2618 fps97.6%

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

Start Load - Barrel Length: 22"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%49,298 psi84%2615 fps100%
Accurate 2495<<locked>>80%41,959 psi71%2536 fps100%
Accurate 2520<<locked>>80%47,369 psi81%2667 fps100%
Accurate 2520<<locked>>80%47,369 psi81%2667 fps100%
Accurate 4064<<locked>>80%39,668 psi68%2526 fps100%
Accurate 4350<<locked>>86%35,679 psi61%2503 fps95%
ADI AR 2206H<<locked>>80%45,295 psi77%2638 fps98.8%
ADI AR 2208<<locked>>80%38,624 psi66%2490 fps96.7%
ADI Benchmark 8208<<locked>>80%47,355 psi81%2648 fps99.7%
Alliant AR-Comp<<locked>>80%47,790 psi81%2638 fps100%
Alliant Power Pro 2000-MR<<locked>>80%41,249 psi70%2661 fps97.2%
Alliant Reloder- TS 15.5<<locked>>80%38,203 psi65%2510 fps98.1%
Alliant Reloder-15<<locked>>80%40,988 psi70%2572 fps97.5%
Alliant Reloder-16<<locked>>86%35,781 psi61%2513 fps95.1%
Alliant Reloder-1744.7 gr80%33,025 psi56%2470 fps95.8%
Alliant Reloder-23<<locked>>94%32,953 psi56%2467 fps95.7%
Alliant Reloder-26<<locked>>96%38,522 psi66%2657 fps95.2%
Baschieri & Pellagri 107<<locked>>80%44,686 psi76%2644 fps97.8%
Bofors RP3<<locked>>80%37,971 psi65%2513 fps98.2%
Bofors RP7<<locked>>92%49,879 psi85%2697 fps95.5%
Hodgdon Benchmark<<locked>>80%49,211 psi84%2641 fps100%
Hodgdon BL-C2<<locked>>80%46,354 psi79%2671 fps99.8%
Hodgdon H380<<locked>>80%38,624 psi66%2513 fps95.5%
Hodgdon H414<<locked>>90%47,950 psi82%2746 fps95.7%
Hodgdon H4895<<locked>>80%45,701 psi78%2651 fps99.2%
Hodgdon Hybrid 100V<<locked>>84%30,908 psi53%2362 fps95%
Hodgdon LEVERevolution<<locked>>80%39,247 psi67%2569 fps98.5%
Hodgdon TrailBoss<<locked>>80%26,571 psi45%1535 fps100%
Hodgdon VARGET<<locked>>80%40,611 psi69%2536 fps98.3%
IMR 3031<<locked>>80%41,640 psi71%2579 fps100%
IMR 4064<<locked>>80%37,695 psi64%2464 fps96.7%
IMR 4166 Enduron<<locked>>88%47,906 psi82%2638 fps95.6%
IMR 4451 Enduron<<locked>>90%48,718 psi83%2677 fps95.7%
IMR 4831<<locked>>90%35,404 psi60%2480 fps95%
IMR 4895<<locked>>80%41,974 psi71%2602 fps98.3%
IMR 8208 XBR<<locked>>80%47,355 psi81%2648 fps99.7%
Lovex D073.6<<locked>>80%44,556 psi76%2621 fps100%
Lovex S060<<locked>>80%45,382 psi77%2582 fps98.9%
Lovex S062<<locked>>80%40,553 psi69%2530 fps98.9%
Lovex S065<<locked>>88%42,641 psi73%2572 fps95.7%
Lovex S070<<locked>>92%45,905 psi78%2654 fps95.4%
Norma 201<<locked>>80%44,469 psi76%2595 fps99.5%
Norma 202<<locked>>80%44,672 psi76%2602 fps100%
Norma 203B<<locked>>80%40,408 psi69%2559 fps97.9%
Norma URP<<locked>>88%38,479 psi66%2562 fps95.9%
Ramshot Big Game<<locked>>80%39,987 psi68%2572 fps97.6%
Ramshot Hunter<<locked>>92%42,685 psi73%2654 fps95.2%
Ramshot TAC<<locked>>80%47,166 psi80%2651 fps97.1%
Ramshot Wild Boar<<locked>>80%46,789 psi80%2671 fps99%
ReloadSwiss RS 14<<locked>>80%26,745 psi46%1565 fps100%
ReloadSwiss RS 50<<locked>>84%44,440 psi76%2605 fps95.4%
ReloadSwiss RS 52<<locked>>80%43,250 psi74%2674 fps98%
ReloadSwiss RS 6044.7 gr80%35,128 psi60%2539 fps99%
ReloadSwiss RS 62<<locked>>88%37,927 psi65%2575 fps95.4%
ReloadSwiss RS 7051.1 gr90%40,741 psi69%2644 fps95.5%
Rottweil R 901<<locked>>80%48,443 psi82%2638 fps100%
Rottweil R 902<<locked>>80%42,351 psi72%2546 fps99.2%
Rottweil R 903<<locked>>80%35,563 psi61%2454 fps97.2%
Rottweil R 907<<locked>>92%49,879 psi85%2697 fps95.5%
Shooters World Long Rifle<<locked>>88%42,641 psi73%2572 fps95.7%
Shooters World Match Rifle<<locked>>80%44,556 psi76%2621 fps100%
Shooters World Precision<<locked>>80%40,553 psi69%2530 fps98.9%
Shooters World SW4350<<locked>>92%45,905 psi78%2654 fps95.4%
SNPE Vectan SP 11<<locked>>80%36,593 psi62%2503 fps96.7%
SNPE Vectan SP 7<<locked>>80%45,600 psi78%2628 fps97.3%
SNPE Vectan SP 9<<locked>>80%43,830 psi75%2608 fps98.5%
SNPE Vectan Tubal 3000<<locked>>80%45,730 psi78%2552 fps100%
SNPE Vectan Tubal 5000<<locked>>80%38,087 psi65%2418 fps100%
SNPE Vectan Tubal 7000<<locked>>92%47,964 psi82%2625 fps95.7%
Somchem S335<<locked>>80%45,353 psi77%2552 fps100%
Somchem S341<<locked>>80%45,484 psi77%2628 fps98.8%
Somchem S355<<locked>>80%36,506 psi62%2464 fps97.3%
Somchem S365<<locked>>82%28,195 psi48%2339 fps95.3%
Unknown powder<<locked>>86%39,088 psi67%2562 fps95.3%
Vihtavuori N133<<locked>>80%46,050 psi78%2546 fps100%
Vihtavuori N135<<locked>>80%41,800 psi71%2530 fps100%
Vihtavuori N140<<locked>>80%42,235 psi72%2536 fps100%
Vihtavuori N150<<locked>>80%34,577 psi59%2402 fps98%
Vihtavuori N160<<locked>>86%37,579 psi64%2510 fps95.5%
Vihtavuori N530<<locked>>80%47,572 psi81%2648 fps99.8%
Vihtavuori N540<<locked>>80%40,712 psi69%2523 fps99.9%
Vihtavuori N550<<locked>>86%36,999 psi63%2510 fps95.1%
Vihtavuori N555<<locked>>94%35,636 psi61%2546 fps95.8%
Winchester 6.5 StaBALL<<locked>>80%30,821 psi52%2326 fps95.1%
Winchester 760<<locked>>90%47,950 psi82%2746 fps95.7%
Winchester StaBALL HD<<locked>>96%31,154 psi53%2490 fps95.1%

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 107 powders for 7 mm Exp. Rem. loaded with the .284 | 142gr | Lehigh Defense Controlled Chaos. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,887 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (405 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.284" calls for a 1:9.5 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 70, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 mm Exp. Rem. with the .284 | 142gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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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