Load data for 7 x 61 S&H (Super) + .284 | 127gr | Geco ZERO LG

7 x 61 S&H (Super) cartridge drawing
Geco logo

Load Specifications

Bullet Manufacturer:Geco
Bullet Weight:127 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.401"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:77.6 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:9.0

Load data in caliber 7 x 61 S&H (Super) with .284 | 127gr | Geco ZERO LG 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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>84%50,865 psi87%2949 fps100%
Accurate 2700<<locked>>84%49,792 psi85%2940 fps96.2%
Accurate 3100ᴾ<<locked>>100%45,629 psi78%2949 fps97.1%
Accurate 4064<<locked>>86%51,126 psi87%2999 fps100%
Accurate 4350<<locked>>94%51,517 psi88%3087 fps99.4%
ADI AR 2206H<<locked>>82%51,430 psi88%3031 fps99.8%
ADI AR 2208<<locked>>88%52,533 psi89%3035 fps99.7%
Alliant Power Pro 2000-MR<<locked>>84%51,111 psi87%3150 fps99.7%
Alliant Reloder- TS 15.5<<locked>>88%52,910 psi90%3058 fps100%
Alliant Reloder-15<<locked>>84%49,734 psi85%3018 fps99.5%
Alliant Reloder-16<<locked>>96%52,968 psi90%3156 fps99.8%
Alliant Reloder-17<<locked>>90%50,241 psi86%3123 fps100%
Alliant Reloder-19ᴾ<<locked>>100%52,475 psi89%3110 fps96%
Alliant Reloder-23ᴾ<<locked>>100%43,149 psi73%2979 fps99.5%
Alliant Reloder-26ᴾ<<locked>>100%49,023 psi83%3169 fps99.2%
Baschieri & Pellagri 107<<locked>>82%51,097 psi87%3038 fps99.4%
Bofors RP3<<locked>>86%49,777 psi85%3012 fps100%
Bofors RP7<<locked>>90%50,053 psi85%2982 fps96.5%
Hodgdon H380<<locked>>86%50,618 psi86%3025 fps98.9%
Hodgdon H414<<locked>>92%50,705 psi86%3077 fps97.3%
Hodgdon H4350<<locked>>90%51,343 psi87%3045 fps96%
Hodgdon H4895<<locked>>82%51,953 psi88%3041 fps100%
Hodgdon Hybrid 100V<<locked>>98%52,866 psi90%3074 fps100%
Hodgdon LEVERevolution<<locked>>84%51,634 psi88%3074 fps100%
Hodgdon Superformance<<locked>>92%51,097 psi87%3114 fps97%
Hodgdon TrailBossᴾ<<locked>>100%35,694 psi61%1932 fps100%
Hodgdon VARGET<<locked>>82%49,792 psi85%2989 fps99.9%
IMR 3031<<locked>>82%52,025 psi89%3025 fps100%
IMR 4064<<locked>>86%51,996 psi89%3015 fps99.7%
IMR 4166 Enduron<<locked>>84%51,488 psi88%2989 fps97.3%
IMR 4350<<locked>>94%50,792 psi86%3018 fps96.7%
IMR 4451 Enduron<<locked>>90%52,025 psi89%3022 fps97.4%
IMR 4831<<locked>>96%52,098 psi89%3077 fps99.5%
IMR 4895<<locked>>84%51,039 psi87%3051 fps99.8%
Lovex D073.6<<locked>>82%50,937 psi87%3002 fps100%
Lovex S060<<locked>>82%50,662 psi86%2956 fps99.8%
Lovex S062<<locked>>86%51,837 psi88%3012 fps100%
Lovex S065<<locked>>92%51,314 psi87%3012 fps98.5%
Lovex S070<<locked>>94%52,315 psi89%3048 fps97.7%
Norma 201<<locked>>82%49,922 psi85%2972 fps100%
Norma 202<<locked>>82%50,633 psi86%2976 fps100%
Norma 203B<<locked>>86%52,417 psi89%3064 fps99.9%
Norma MRPᴾ<<locked>>100%48,501 psi83%3117 fps96.7%
Norma URP<<locked>>94%50,705 psi86%3074 fps99.3%
Ramshot Big Game<<locked>>84%49,501 psi84%3028 fps99.7%
Ramshot Hunter<<locked>>96%53,026 psi90%3127 fps98.5%
ReloadSwiss RS 14ᴾ<<locked>>100%36,158 psi62%1975 fps100%
ReloadSwiss RS 50<<locked>>86%50,894 psi87%3005 fps97.8%
ReloadSwiss RS 52<<locked>>82%50,241 psi86%3087 fps99.5%
ReloadSwiss RS 60<<locked>>88%49,995 psi85%3127 fps100%
ReloadSwiss RS 62<<locked>>94%51,358 psi87%3107 fps99.2%
ReloadSwiss RS 70<<locked>>94%50,763 psi86%3136 fps99%
Rottweil R 902<<locked>>84%50,575 psi86%2972 fps100%
Rottweil R 903<<locked>>88%49,937 psi85%3009 fps99.9%
Rottweil R 905ᴾ<<locked>>100%51,271 psi87%3087 fps95.9%
Rottweil R 907<<locked>>90%50,053 psi85%2982 fps96.5%
Shooters World Long Rifle<<locked>>92%51,314 psi87%3012 fps98.5%
Shooters World Match Rifle<<locked>>82%50,937 psi87%3002 fps100%
Shooters World Precision<<locked>>86%51,837 psi88%3012 fps100%
Shooters World SW4350<<locked>>94%52,315 psi89%3048 fps97.7%
SNPE Vectan SP 11<<locked>>88%51,692 psi88%3071 fps99.8%
SNPE Vectan SP 7<<locked>>82%52,156 psi89%3022 fps99.1%
SNPE Vectan SP 9<<locked>>82%49,951 psi85%2999 fps99.7%
SNPE Vectan Tubal 3000<<locked>>82%51,256 psi87%2913 fps100%
SNPE Vectan Tubal 5000<<locked>>88%51,880 psi88%2917 fps100%
SNPE Vectan Tubal 7000<<locked>>92%51,227 psi87%2959 fps97.3%
Somchem S335<<locked>>82%50,807 psi86%2910 fps100%
Somchem S341<<locked>>82%51,996 psi89%3018 fps99.8%
Somchem S355<<locked>>88%50,314 psi86%3009 fps99.9%
Somchem S365<<locked>>98%52,794 psi90%3140 fps100%
Somchem S385ᴾ<<locked>>100%52,098 psi89%3068 fps97%
Vihtavuori N133<<locked>>82%51,692 psi88%2900 fps100%
Vihtavuori N135<<locked>>84%50,531 psi86%2940 fps100%
Vihtavuori N140<<locked>>84%51,140 psi87%2953 fps100%
Vihtavuori N150<<locked>>90%51,474 psi88%2986 fps100%
Vihtavuori N160<<locked>>94%53,113 psi90%3074 fps99.5%
Vihtavuori N540<<locked>>86%52,924 psi90%2999 fps100%
Vihtavuori N550<<locked>>94%52,228 psi89%3077 fps99.3%
Vihtavuori N555ᴾ<<locked>>100%47,877 psi82%3061 fps99.4%
Winchester 6.5 StaBALL<<locked>>94%53,084 psi90%3048 fps100%
Winchester 760<<locked>>92%50,995 psi87%3084 fps97.4%
Winchester StaBALL HDᴾ<<locked>>100%38,798 psi66%2999 fps99.6%
Winchester StaBALL Match<<locked>>84%53,156 psi90%3061 fps100%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%44,382 psi76%2841 fps100%
Accurate 2700<<locked>>82%46,630 psi79%2881 fps95.4%
Accurate 3100<<locked>>96%39,436 psi67%2822 fps95.3%
Accurate 4064<<locked>>80%42,018 psi72%2838 fps100%
Accurate 4350<<locked>>82%33,576 psi57%2703 fps95%
ADI AR 2206H<<locked>>80%48,138 psi82%2969 fps99.6%
ADI AR 2208<<locked>>80%40,828 psi70%2805 fps98%
Alliant Power Pro 2000-MR<<locked>>80%44,295 psi75%3012 fps98.7%
Alliant Reloder- TS 15.5<<locked>>80%40,785 psi69%2831 fps99.1%
Alliant Reloder-15<<locked>>80%43,671 psi74%2900 fps98.7%
Alliant Reloder-16<<locked>>82%33,591 psi57%2723 fps95.1%
Alliant Reloder-1753.3 gr80%35,375 psi60%2799 fps97.7%
Alliant Reloder-19<<locked>>98%49,052 psi84%3045 fps95.1%
Alliant Reloder-23<<locked>>90%31,169 psi53%2674 fps95.9%
Alliant Reloder-26<<locked>>92%36,521 psi62%2881 fps95.6%
Baschieri & Pellagri 107<<locked>>80%47,848 psi81%2979 fps99%
Bofors RP3<<locked>>80%40,364 psi69%2831 fps99.2%
Bofors RP7<<locked>>88%46,818 psi80%2923 fps95.7%
Hodgdon H380<<locked>>80%41,234 psi70%2838 fps97.1%
Hodgdon H414<<locked>>88%44,266 psi75%2953 fps95.7%
Hodgdon H4350<<locked>>88%48,066 psi82%2982 fps95.2%
Hodgdon H4895<<locked>>80%48,617 psi83%2982 fps99.8%
Hodgdon Hybrid 100V<<locked>>82%30,908 psi53%2612 fps96%
Hodgdon LEVERevolution<<locked>>80%45,078 psi77%2956 fps99.7%
Hodgdon Superformance<<locked>>88%43,888 psi75%2966 fps95%
Hodgdon TrailBoss<<locked>>80%26,484 psi45%1726 fps100%
Hodgdon VARGET<<locked>>80%46,572 psi79%2930 fps99.6%
IMR 3031<<locked>>80%48,718 psi83%2972 fps100%
IMR 4064<<locked>>80%42,888 psi73%2844 fps98.6%
IMR 4166 Enduron<<locked>>80%45,411 psi77%2871 fps95.9%
IMR 4350<<locked>>90%44,512 psi76%2894 fps95%
IMR 4451 Enduron<<locked>>84%42,960 psi73%2844 fps95.1%
IMR 4831<<locked>>84%34,867 psi59%2723 fps95.7%
IMR 4895<<locked>>80%44,802 psi76%2933 fps99.2%
Lovex D073.6<<locked>>80%47,543 psi81%2943 fps100%
Lovex S060<<locked>>80%47,688 psi81%2900 fps99.6%
Lovex S062<<locked>>80%42,772 psi73%2844 fps99.6%
Lovex S065<<locked>>84%39,987 psi68%2785 fps95.8%
Lovex S070<<locked>>88%43,308 psi74%2874 fps95.6%
Norma 201<<locked>>80%46,934 psi80%2917 fps99.9%
Norma 202<<locked>>80%47,558 psi81%2923 fps100%
Norma 203B<<locked>>80%43,062 psi73%2887 fps99%
Norma MRP<<locked>>98%45,295 psi77%3048 fps95.8%
Norma URP<<locked>>82%33,852 psi58%2707 fps95%
Ramshot Big Game<<locked>>80%43,033 psi73%2904 fps98.8%
Ramshot Hunter<<locked>>88%40,495 psi69%2877 fps95.5%
ReloadSwiss RS 14<<locked>>80%26,774 psi46%1765 fps100%
ReloadSwiss RS 50<<locked>>80%41,510 psi71%2818 fps95.5%
ReloadSwiss RS 52<<locked>>80%46,543 psi79%3015 fps99.1%
ReloadSwiss RS 6053.3 gr80%37,710 psi64%2871 fps99.8%
ReloadSwiss RS 62<<locked>>84%35,926 psi61%2785 fps95.6%
ReloadSwiss RS 7058.2 gr86%38,319 psi65%2864 fps95.8%
Rottweil R 902<<locked>>80%44,672 psi76%2864 fps99.8%
Rottweil R 903<<locked>>80%37,956 psi65%2769 fps98.5%
Rottweil R 905<<locked>>98%47,761 psi81%3022 fps95%
Rottweil R 907<<locked>>88%46,818 psi80%2923 fps95.7%
Shooters World Long Rifle<<locked>>84%39,987 psi68%2785 fps95.8%
Shooters World Match Rifle<<locked>>80%47,543 psi81%2943 fps100%
Shooters World Precision<<locked>>80%42,772 psi73%2844 fps99.6%
Shooters World SW4350<<locked>>88%43,308 psi74%2874 fps95.6%
SNPE Vectan SP 11<<locked>>80%39,160 psi67%2825 fps98.1%
SNPE Vectan SP 7<<locked>>80%48,747 psi83%2963 fps98.6%
SNPE Vectan SP 9<<locked>>80%46,528 psi79%2936 fps99.4%
SNPE Vectan Tubal 3000<<locked>>80%48,109 psi82%2861 fps100%
SNPE Vectan Tubal 5000<<locked>>80%40,219 psi68%2713 fps100%
SNPE Vectan Tubal 7000<<locked>>86%41,974 psi71%2779 fps95%
Somchem S335<<locked>>80%47,848 psi81%2861 fps100%
Somchem S341<<locked>>80%48,660 psi83%2959 fps99.6%
Somchem S355<<locked>>80%38,769 psi66%2779 fps98.5%
Somchem S365<<locked>>80%28,195 psi48%2589 fps96.2%
Somchem S385<<locked>>96%45,397 psi77%2943 fps95.3%
Vihtavuori N133<<locked>>80%48,588 psi83%2851 fps100%
Vihtavuori N135<<locked>>80%44,396 psi76%2838 fps100%
Vihtavuori N140<<locked>>80%44,918 psi76%2851 fps100%
Vihtavuori N150<<locked>>80%36,840 psi63%2707 fps99.1%
Vihtavuori N160<<locked>>82%35,404 psi60%2717 fps95.6%
Vihtavuori N540<<locked>>80%43,439 psi74%2838 fps100%
Vihtavuori N550<<locked>>82%34,809 psi59%2713 fps95.1%
Vihtavuori N555<<locked>>88%31,821 psi54%2697 fps95%
Winchester 6.5 StaBALL<<locked>>80%32,750 psi56%2628 fps97%
Winchester 760<<locked>>88%44,498 psi76%2956 fps95.7%
Winchester StaBALL HD<<locked>>92%29,443 psi50%2697 fps95.5%
Winchester StaBALL Match<<locked>>80%46,267 psi79%2940 fps99.7%

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 x 61 S&H (Super) loaded with the .284 | 127gr | Geco ZERO LG. Alliant Reloder-26 delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,932 fps to 3,169 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 127.0 gr projectile in 0.284" calls for a 1:9.0 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 x 61 S&H (Super) with the .284 | 127gr | Geco ZERO LG 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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