Load data for 7 mm Rem. Mag. + .284 | 140gr | Barnes X BT

7 mm Rem. Mag. cartridge drawing
Barnes logo

Load Specifications

Bullet Manufacturer:Barnes
Bullet Weight:140 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:82 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.5

Load data in caliber 7 mm Rem. Mag. with .284 | 140gr | Barnes X BT bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and IMR 7828 SSC.

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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2700<<locked>>84%55,230 psi89%2913 fps98.7%
Accurate 3100<<locked>>96%53,780 psi86%2969 fps99.5%
Accurate 4350<<locked>>88%55,230 psi89%3015 fps100%
ADI AR 2208<<locked>>84%56,376 psi90%2972 fps100%
ADI AR 2209<<locked>>94%54,955 psi88%3041 fps98%
ADI AR 2213<<locked>>98%56,362 psi90%3097 fps97.1%
ADI AR 2225ᴾ<<locked>>100%39,943 psi64%2815 fps96.1%
Alliant Reloder- TS 15.5<<locked>>82%54,404 psi87%2949 fps100%
Alliant Reloder-16<<locked>>90%55,056 psi88%3061 fps100%
Alliant Reloder-17<<locked>>86%56,289 psi90%3084 fps100%
Alliant Reloder-19<<locked>>94%54,766 psi88%3035 fps98%
Alliant Reloder-22<<locked>>98%55,941 psi90%3097 fps98.4%
Alliant Reloder-23<<locked>>98%53,388 psi86%3031 fps100%
Alliant Reloder-25ᴾ<<locked>>100%49,458 psi79%3018 fps99.7%
Alliant Reloder-26<<locked>>94%53,447 psi86%3117 fps100%
Bofors RP15ᴾ<<locked>>100%54,853 psi88%3081 fps98.1%
Bofors RP3<<locked>>82%55,941 psi90%2972 fps100%
Bofors RP5<<locked>>98%55,941 psi90%3097 fps98.4%
Bofors RP7<<locked>>86%54,621 psi88%2949 fps98.7%
Hodgdon H380<<locked>>82%55,738 psi89%2986 fps100%
Hodgdon H414<<locked>>84%54,041 psi87%3015 fps99.1%
Hodgdon H4350<<locked>>88%54,288 psi87%2982 fps98.2%
Hodgdon H4831ᴾ<<locked>>100%55,564 psi89%3022 fps96.3%
Hodgdon H4831 SC<<locked>>96%55,564 psi89%3022 fps96.3%
Hodgdon Hybrid 100V<<locked>>92%55,680 psi89%2986 fps100%
Hodgdon Retumboᴾ<<locked>>100%48,457 psi78%3058 fps97.7%
Hodgdon Superformance<<locked>>86%52,692 psi84%3028 fps98.7%
Hodgdon TrailBossᴾ<<locked>>100%37,057 psi59%1886 fps100%
Hodgdon VARGET<<locked>>82%55,927 psi90%2963 fps100%
IMR 4064<<locked>>84%55,477 psi89%2949 fps100%
IMR 4166 Enduron<<locked>>84%54,317 psi87%2923 fps99%
IMR 4350<<locked>>90%55,332 psi89%2982 fps98.9%
IMR 4451 Enduron<<locked>>86%55,811 psi89%2976 fps99.2%
IMR 4831<<locked>>94%56,391 psi90%3018 fps100%
IMR 4955 Enduron<<locked>>94%54,389 psi87%2969 fps96.3%
IMR 7828 SSC<<locked>>96%54,404 psi87%3074 fps96.8%
Lovex S065<<locked>>86%53,359 psi86%2927 fps99.6%
Lovex S070<<locked>>88%54,766 psi88%2972 fps99.2%
Lovex S071ᴾ<<locked>>100%51,329 psi82%2930 fps99.3%
Norma 204<<locked>>90%56,260 psi90%3038 fps98.1%
Norma MRP<<locked>>96%55,796 psi89%3127 fps99.3%
Norma URP<<locked>>88%53,476 psi86%2992 fps100%
Ramshot Grand<<locked>>94%53,983 psi87%3077 fps97.1%
Ramshot Hunter<<locked>>90%55,579 psi89%3045 fps99.7%
Ramshot Magnum<<locked>>98%54,926 psi88%3061 fps98.8%
ReloadSwiss RS 14ᴾ<<locked>>100%37,782 psi61%1929 fps100%
ReloadSwiss RS 50<<locked>>82%55,245 psi89%2966 fps99.5%
ReloadSwiss RS 60<<locked>>84%55,695 psi89%3074 fps100%
ReloadSwiss RS 62<<locked>>88%54,737 psi88%3031 fps100%
ReloadSwiss RS 70<<locked>>90%56,347 psi90%3114 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%48,776 psi78%3054 fps98.7%
Rottweil R 903<<locked>>84%55,999 psi90%2969 fps100%
Rottweil R 904<<locked>>92%53,490 psi86%2959 fps96.7%
Rottweil R 905<<locked>>94%54,186 psi87%3022 fps98.1%
Rottweil R 907<<locked>>86%54,621 psi88%2949 fps98.7%
Shooters World Long Rifle<<locked>>86%53,359 psi86%2927 fps99.6%
Shooters World SW4350<<locked>>88%54,766 psi88%2972 fps99.2%
SNPE Vectan SP 11<<locked>>82%53,359 psi86%2969 fps100%
SNPE Vectan Tubal 5000<<locked>>84%55,782 psi89%2841 fps100%
SNPE Vectan Tubal 7000<<locked>>88%56,144 psi90%2930 fps99.3%
SNPE Vectan Tubal 8000<<locked>>94%53,766 psi86%3018 fps98%
Somchem S355<<locked>>84%55,637 psi89%2963 fps100%
Somchem S361<<locked>>92%55,042 psi88%2949 fps96.2%
Somchem S365<<locked>>90%52,982 psi85%2995 fps100%
Somchem S385<<locked>>94%55,129 psi88%3002 fps98.8%
Unknown powder<<locked>>86%53,795 psi86%2992 fps99.9%
Vihtavuori N150<<locked>>84%53,330 psi86%2884 fps100%
Vihtavuori N160<<locked>>88%55,143 psi88%2982 fps100%
Vihtavuori N165<<locked>>98%54,172 psi87%2972 fps98.4%
Vihtavuori N550<<locked>>88%54,549 psi87%2989 fps100%
Vihtavuori N555<<locked>>96%56,362 psi90%3064 fps100%
Vihtavuori N560<<locked>>96%55,811 psi89%3114 fps96.7%
Vihtavuori N565ᴾ<<locked>>100%51,953 psi83%3025 fps96.1%
Winchester 6.5 StaBALL<<locked>>88%54,520 psi87%2943 fps100%
Winchester 760<<locked>>84%54,041 psi87%3015 fps99.1%
Winchester StaBALL HDᴾ<<locked>>100%52,823 psi85%3163 fps100%
Winchester Supreme 780<<locked>>92%52,591 psi84%2953 fps97.6%

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%48,849 psi78%2802 fps97.6%
Accurate 3100<<locked>>82%34,476 psi55%2582 fps95.3%
Accurate 4350<<locked>>80%42,786 psi69%2789 fps99.1%
ADI AR 2208<<locked>>80%50,183 psi80%2867 fps100%
ADI AR 2209<<locked>>86%42,844 psi69%2808 fps95.1%
ADI AR 2213<<locked>>94%49,676 psi80%2976 fps95.5%
ADI AR 2225<<locked>>98%37,724 psi60%2756 fps95.1%
Alliant Reloder- TS 15.5<<locked>>80%51,343 psi82%2900 fps100%
Alliant Reloder-16<<locked>>80%40,538 psi65%2785 fps99%
Alliant Reloder-17<<locked>>80%45,919 psi74%2910 fps100%
Alliant Reloder-19<<locked>>86%42,917 psi69%2808 fps95.2%
Alliant Reloder-22<<locked>>90%43,410 psi70%2861 fps95.6%
Alliant Reloder-23<<locked>>80%30,835 psi49%2552 fps97.7%
Alliant Reloder-25<<locked>>88%34,534 psi55%2671 fps95.9%
Alliant Reloder-2658.4 gr80%33,156 psi53%2674 fps96.2%
Bofors RP15<<locked>>92%43,004 psi69%2851 fps95.2%
Bofors RP3<<locked>>80%52,475 psi84%2920 fps100%
Bofors RP5<<locked>>90%43,410 psi70%2861 fps95.6%
Bofors RP7<<locked>>80%45,701 psi73%2785 fps97.1%
Hodgdon H380<<locked>>80%52,359 psi84%2930 fps99.8%
Hodgdon H414<<locked>>80%47,384 psi76%2894 fps98%
Hodgdon H4350<<locked>>80%42,830 psi69%2762 fps95.6%
Hodgdon H4831<<locked>>98%52,272 psi84%2966 fps95.5%
Hodgdon H4831 SC<<locked>>94%52,069 psi83%2959 fps95.5%
Hodgdon Hybrid 100V<<locked>>80%38,363 psi62%2677 fps99.5%
Hodgdon Retumbo<<locked>>96%42,859 psi69%2927 fps95.8%
Hodgdon Superformance<<locked>>80%42,815 psi69%2835 fps96.6%
Hodgdon TrailBoss<<locked>>80%27,804 psi45%1686 fps100%
Hodgdon VARGET<<locked>>80%52,765 psi85%2910 fps100%
IMR 4064<<locked>>80%49,530 psi79%2848 fps100%
IMR 4166 Enduron<<locked>>80%48,385 psi78%2818 fps98.2%
IMR 4350<<locked>>80%41,060 psi66%2710 fps95.8%
IMR 4451 Enduron<<locked>>80%46,528 psi75%2808 fps97.7%
IMR 4831<<locked>>80%37,260 psi60%2654 fps98%
IMR 4955 Enduron<<locked>>92%51,358 psi82%2913 fps95.6%
IMR 7828 SSC64.1 gr92%47,718 psi77%2946 fps95.1%
Lovex S065<<locked>>80%44,744 psi72%2766 fps98.5%
Lovex S070<<locked>>80%43,149 psi69%2753 fps97.2%
Lovex S071<<locked>>86%33,895 psi54%2566 fps95.1%
Norma 204<<locked>>82%43,468 psi70%2799 fps95.1%
Norma MRP<<locked>>84%37,637 psi60%2759 fps95.1%
Norma URP<<locked>>80%41,756 psi67%2772 fps98.9%
Ramshot Grand65.7 gr90%46,949 psi75%2943 fps95.2%
Ramshot Hunter<<locked>>80%40,495 psi65%2759 fps97.2%
Ramshot Magnum<<locked>>90%41,307 psi66%2799 fps95.6%
ReloadSwiss RS 14<<locked>>80%28,326 psi45%1726 fps100%
ReloadSwiss RS 50<<locked>>80%51,938 psi83%2910 fps99.1%
ReloadSwiss RS 60<<locked>>80%48,530 psi78%2959 fps100%
ReloadSwiss RS 62<<locked>>80%42,192 psi68%2802 fps98.8%
ReloadSwiss RS 70<<locked>>80%40,321 psi65%2802 fps98.2%
ReloadSwiss RS 76<<locked>>94%39,929 psi64%2848 fps95.9%
Rottweil R 903<<locked>>80%49,516 psi79%2864 fps100%
Rottweil R 904<<locked>>88%47,311 psi76%2844 fps95.1%
Rottweil R 905<<locked>>86%42,163 psi68%2792 fps95.2%
Rottweil R 907<<locked>>80%45,701 psi73%2785 fps97.1%
Shooters World Long Rifle<<locked>>80%44,744 psi72%2766 fps98.5%
Shooters World SW4350<<locked>>80%43,149 psi69%2753 fps97.2%
SNPE Vectan SP 11<<locked>>80%50,111 psi80%2917 fps100%
SNPE Vectan Tubal 5000<<locked>>80%49,501 psi79%2746 fps100%
SNPE Vectan Tubal 7000<<locked>>80%43,874 psi70%2710 fps97.3%
SNPE Vectan Tubal 8000<<locked>>86%41,785 psi67%2785 fps95%
Somchem S355<<locked>>80%49,356 psi79%2858 fps100%
Somchem S361<<locked>>90%51,793 psi83%2894 fps95.4%
Somchem S365<<locked>>80%38,493 psi62%2736 fps100%
Somchem S385<<locked>>84%40,495 psi65%2723 fps95.6%
Unknown powder<<locked>>80%44,527 psi71%2825 fps98.9%
Vihtavuori N150<<locked>>80%47,166 psi76%2782 fps100%
Vihtavuori N160<<locked>>80%43,033 psi69%2766 fps99%
Vihtavuori N165<<locked>>90%42,293 psi68%2753 fps95.8%
Vihtavuori N550<<locked>>80%42,699 psi68%2772 fps98.9%
Vihtavuori N555<<locked>>80%34,360 psi55%2635 fps97.7%
Vihtavuori N560<<locked>>92%49,052 psi79%2989 fps95%
Vihtavuori N565<<locked>>98%48,675 psi78%2966 fps95.3%
Winchester 6.5 StaBALL<<locked>>80%41,887 psi67%2730 fps99.9%
Winchester 760<<locked>>80%47,384 psi76%2894 fps98%
Winchester StaBALL HD<<locked>>80%27,746 psi44%2546 fps97.1%
Winchester Supreme 780<<locked>>86%42,888 psi69%2772 fps95.2%

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 85 powders for 7 mm Rem. Mag. loaded with the .284 | 140gr | Barnes X BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,163 fps. ADI AR 2217 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Alliant Reloder-26, Ramshot Grand, IMR 7828 SSC rank at the top here: for 7 mm Rem. Mag. with the .284 | 140gr | Barnes X BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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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