Load data for 5.6 x 50 R Mag. + .224 | 55gr | Hornady GMX

5.6 x 50 R Mag. cartridge drawing
Hornady logo

Load Specifications

Bullet Manufacturer:Hornady
Bullet Weight:55 gr
Bullet Diameter:0.224"
Bullet Length:<<locked>>
Case Length (l3):1.968"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:34 Grains of Water
Primer Size:Small Rifle (SR)
Barrel Length:23.62"
Max. allowed Pressure:49,313 psi
Recommended Twist Rate:1:10.5

Load data in caliber 5.6 x 50 R Mag. with .224 | 55gr | Hornady GMX bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and SNPE Vectan SP 3.

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: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>94%44,309 psi90%3081 fps99.2%
Accurate 2460<<locked>>90%42,395 psi86%3051 fps96.3%
Accurate 2495ᴾ<<locked>>100%41,597 psi84%3087 fps99.1%
Accurate 2520<<locked>>94%42,844 psi87%3094 fps96%
Accurate 4064ᴾ<<locked>>100%38,595 psi78%3038 fps96.2%
Accurate LT-30<<locked>>86%44,614 psi90%3005 fps98.1%
ADI AR 2207<<locked>>84%44,048 psi89%3068 fps100%
ADI AR 2219<<locked>>86%42,540 psi86%3091 fps97.6%
Alliant AR-Comp<<locked>>96%43,714 psi89%3163 fps100%
Alliant Reloder-10x<<locked>>88%41,640 psi84%3054 fps99.4%
Alliant Reloder-7<<locked>>82%42,612 psi86%3015 fps99.7%
Baschieri & Pellagri 106<<locked>>86%43,207 psi88%2979 fps98.2%
Hodgdon H322<<locked>>90%44,121 psi89%3123 fps97.9%
Hodgdon H335<<locked>>88%41,901 psi85%3068 fps96.4%
Hodgdon H4198<<locked>>82%43,279 psi88%2999 fps97.2%
Hodgdon TrailBossᴾ<<locked>>100%32,039 psi65%2024 fps100%
IMR 3031<<locked>>98%44,324 psi90%3192 fps98.8%
IMR 4198<<locked>>88%43,555 psi88%3054 fps99.9%
Lovex D073.6<<locked>>98%43,511 psi88%3120 fps96.1%
Norma 200<<locked>>84%41,524 psi84%3035 fps99.7%
Norma 202<<locked>>96%42,221 psi86%3074 fps96.5%
ReloadSwiss RS 14ᴾ<<locked>>100%31,430 psi64%2060 fps100%
Rottweil R 901<<locked>>94%43,279 psi88%3068 fps96.5%
Shooters World Match Rifle<<locked>>98%43,511 psi88%3120 fps96.1%
SNPE Vectan BA6 1/2<<locked>>82%43,888 psi89%2812 fps100%
SNPE Vectan SP 10<<locked>>86%42,830 psi87%3081 fps96.5%
SNPE Vectan SP 3<<locked>>88%42,757 psi87%3068 fps98.3%
SNPE Vectan Tubal 3000<<locked>>94%42,873 psi87%2995 fps96.5%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%41,727 psi85%2979 fps97.4%
Somchem S335<<locked>>96%44,280 psi90%3041 fps97.8%
Vihtavuori N120<<locked>>84%44,164 psi90%3022 fps100%
Vihtavuori N130<<locked>>90%42,598 psi86%3005 fps99.4%
Vihtavuori N133<<locked>>94%42,322 psi86%3005 fps98.8%
Vihtavuori N135ᴾ<<locked>>100%43,047 psi87%3107 fps99.2%
Vihtavuori N140<<locked>>98%42,743 psi87%3054 fps97%
Vihtavuori N540ᴾ<<locked>>100%44,512 psi90%3100 fps97%

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

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>82%29,689 psi60%2736 fps95.2%
Accurate 2460<<locked>>88%39,885 psi81%2999 fps95.5%
Accurate 2495<<locked>>90%28,660 psi58%2776 fps95.3%
Accurate 2520<<locked>>92%39,697 psi81%3031 fps95%
Accurate 4064<<locked>>98%35,766 psi73%2969 fps95.2%
Accurate LT-30<<locked>>80%36,927 psi75%2838 fps96.2%
ADI AR 2207<<locked>>80%38,827 psi79%2966 fps100%
ADI AR 2219<<locked>>82%36,695 psi74%2956 fps95.8%
Alliant AR-Comp21.5 gr80%25,570 psi52%2684 fps95.8%
Alliant Reloder-10x<<locked>>80%32,401 psi66%2838 fps97.4%
Alliant Reloder-7<<locked>>80%40,103 psi81%2963 fps99.4%
Baschieri & Pellagri 106<<locked>>80%35,288 psi72%2805 fps96.1%
Hodgdon H322<<locked>>84%35,810 psi73%2933 fps95.5%
Hodgdon H335<<locked>>86%39,001 psi79%3005 fps95.5%
Hodgdon H4198<<locked>>80%40,770 psi83%2943 fps96.6%
Hodgdon TrailBoss<<locked>>80%23,337 psi47%1811 fps100%
IMR 303124.1 gr90%33,750 psi68%2940 fps95.7%
IMR 4198<<locked>>80%34,084 psi69%2841 fps98.6%
Lovex D073.6<<locked>>96%40,828 psi83%3068 fps95.4%
Norma 200<<locked>>80%36,303 psi74%2920 fps99%
Norma 202<<locked>>94%39,711 psi81%3022 fps95.8%
ReloadSwiss RS 14<<locked>>80%22,974 psi47%1847 fps100%
Rottweil R 901<<locked>>92%40,814 psi83%3015 fps95.8%
Shooters World Match Rifle<<locked>>96%40,828 psi83%3068 fps95.4%
SNPE Vectan BA6 1/2<<locked>>80%41,321 psi84%2769 fps100%
SNPE Vectan SP 10<<locked>>84%39,871 psi81%3018 fps95.6%
SNPE Vectan SP 321 gr80%32,837 psi67%2835 fps95.4%
SNPE Vectan Tubal 3000<<locked>>92%40,335 psi82%2940 fps95.8%
SNPE Vectan Tubal 5000<<locked>>94%34,345 psi70%2812 fps95.1%
Somchem S335<<locked>>90%36,289 psi74%2871 fps95.6%
Vihtavuori N120<<locked>>80%39,001 psi79%2927 fps100%
Vihtavuori N130<<locked>>80%31,038 psi63%2736 fps96.7%
Vihtavuori N133<<locked>>84%30,792 psi62%2733 fps95.4%
Vihtavuori N135<<locked>>90%30,574 psi62%2815 fps95.8%
Vihtavuori N140<<locked>>94%37,434 psi76%2940 fps95.5%
Vihtavuori N540<<locked>>96%38,537 psi78%2976 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 36 powders for 5.6 x 50 R Mag. loaded with the .224 | 55gr | Hornady GMX. IMR 3031 delivers the highest muzzle velocity at 3,192 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,192 fps. Accurate 2495 gives the best case fill at 100 %, and 36 of the 36 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (340 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, 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 AR-Comp, IMR 3031, SNPE Vectan SP 3 rank at the top here: for 5.6 x 50 R Mag. with the .224 | 55gr | Hornady GMX 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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