Load data for .222 Rem. Mag. + .224 | 55gr | Hornady GMX

.222 Rem. Mag. cartridge drawing
Hornady logo

Load Specifications

Bullet Manufacturer:Hornady
Bullet Weight:55 gr
Bullet Diameter:0.224"
Bullet Length:<<locked>>
Case Length (l3):1.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:30.5 Grains of Water
Primer Size:Small Rifle (SR)
Barrel Length:26"
Max. allowed Pressure:58,740 psi
Recommended Twist Rate:1:10.5

Load data in caliber .222 Rem. Mag. with .224 | 55gr | Hornady GMX bullet and 41 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, SNPE Vectan SP 10 and Hodgdon H335.

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: 26"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>88%50,473 psi86%3104 fps99.9%
Accurate 2015ᴾ<<locked>>100%46,253 psi79%3117 fps99.1%
Accurate 2460ᴾ<<locked>>100%52,170 psi89%3228 fps97.8%
Accurate 2495ᴾ<<locked>>100%33,837 psi58%2940 fps97.1%
Accurate LT-30<<locked>>94%51,053 psi87%3107 fps98.7%
Accurate LT-32<<locked>>94%51,547 psi88%3114 fps97%
ADI AR 2205<<locked>>82%52,301 psi89%3018 fps100%
ADI AR 2207<<locked>>94%52,533 psi89%3212 fps100%
ADI AR 2219<<locked>>96%51,866 psi88%3261 fps98.8%
Alliant AR-Compᴾ<<locked>>100%42,467 psi72%3143 fps99.9%
Alliant Reloder-10xᴾ<<locked>>100%52,910 psi90%3258 fps100%
Alliant Reloder-7<<locked>>92%51,576 psi88%3173 fps100%
Baschieri & Pellagri 106<<locked>>96%52,707 psi90%3136 fps99.1%
Hodgdon H322<<locked>>98%49,719 psi85%3225 fps98.4%
Hodgdon H335<<locked>>98%51,430 psi88%3245 fps97.9%
Hodgdon H4198<<locked>>92%52,852 psi90%3159 fps98.5%
Hodgdon TrailBossᴾ<<locked>>100%31,053 psi53%1975 fps100%
IMR 3031ᴾ<<locked>>100%40,422 psi69%3107 fps97.4%
IMR 4198<<locked>>98%52,272 psi89%3202 fps100%
IMR 4227<<locked>>86%49,821 psi85%3094 fps100%
Lovex D060<<locked>>82%52,779 psi90%3196 fps100%
Lovex D073.4<<locked>>94%53,098 psi90%3255 fps97.2%
Lovex D073.5ᴾ<<locked>>100%52,141 psi89%3219 fps96.5%
Lovex S053<<locked>>88%51,459 psi88%3091 fps100%
Norma 200<<locked>>96%53,098 psi90%3241 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%30,385 psi52%2014 fps100%
ReloadSwiss RS 36<<locked>>88%52,736 psi90%3176 fps100%
ReloadSwiss RS 40ᴾ<<locked>>100%52,982 psi90%3245 fps97.1%
Rottweil R 901ᴾ<<locked>>100%44,976 psi77%3104 fps96.3%
Shooters World AR Plus<<locked>>94%53,098 psi90%3255 fps97.2%
Shooters World Buffalo Rifle<<locked>>82%52,779 psi90%3196 fps100%
SNPE Vectan BA6 1/2<<locked>>92%51,822 psi88%2927 fps100%
SNPE Vectan SP 10<<locked>>96%52,750 psi90%3264 fps98%
SNPE Vectan SP 3<<locked>>98%51,053 psi87%3215 fps99.2%
SNPE Vectan Tubal 3000ᴾ<<locked>>100%45,310 psi77%3031 fps96.4%
Somchem S335ᴾ<<locked>>100%43,482 psi74%3025 fps97.1%
Vihtavuori N110<<locked>>84%52,837 psi90%3031 fps100%
Vihtavuori N120<<locked>>94%52,620 psi90%3156 fps100%
Vihtavuori N130ᴾ<<locked>>100%51,184 psi87%3156 fps99.9%
Vihtavuori N133ᴾ<<locked>>100%44,309 psi75%3041 fps98.7%
Vihtavuori N135ᴾ<<locked>>100%36,260 psi62%2969 fps97.4%

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

Start Load - Barrel Length: 26"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%38,638 psi66%2884 fps98.5%
Accurate 2015<<locked>>88%30,792 psi52%2779 fps95.3%
Accurate 2460<<locked>>94%41,698 psi71%3041 fps95.5%
Accurate 2495<<locked>>96%29,066 psi49%2815 fps95.3%
Accurate LT-30<<locked>>84%37,130 psi63%2835 fps95.6%
Accurate LT-32<<locked>>88%42,873 psi73%2949 fps95%
ADI AR 2205<<locked>>80%49,603 psi84%2979 fps100%
ADI AR 2207<<locked>>80%33,504 psi57%2858 fps99.8%
ADI AR 221921.8 gr86%36,840 psi63%2959 fps95.3%
Alliant AR-Comp<<locked>>84%25,193 psi43%2674 fps95%
Alliant Reloder-10x<<locked>>80%27,789 psi47%2717 fps95.2%
Alliant Reloder-7<<locked>>80%35,331 psi60%2858 fps98.3%
Baschieri & Pellagri 106<<locked>>84%35,650 psi61%2815 fps95.6%
Hodgdon H322<<locked>>90%37,855 psi64%2986 fps95.6%
Hodgdon H33524.1 gr92%41,568 psi71%3061 fps95.7%
Hodgdon H4198<<locked>>82%38,914 psi66%2894 fps95.4%
Hodgdon TrailBoss<<locked>>80%22,452 psi38%1765 fps100%
IMR 3031<<locked>>96%35,708 psi61%2992 fps95.9%
IMR 4198<<locked>>80%30,371 psi52%2740 fps97.1%
IMR 4227<<locked>>80%41,582 psi71%2949 fps100%
Lovex D060<<locked>>80%49,429 psi84%3133 fps100%
Lovex D073.4<<locked>>90%46,079 psi78%3133 fps95.8%
Lovex D073.5<<locked>>98%48,631 psi83%3159 fps95.7%
Lovex S053<<locked>>80%40,321 psi69%2904 fps100%
Norma 200<<locked>>80%31,473 psi54%2808 fps97.5%
ReloadSwiss RS 14<<locked>>80%22,031 psi38%1801 fps100%
ReloadSwiss RS 36<<locked>>80%40,843 psi70%2972 fps99.9%
ReloadSwiss RS 40<<locked>>96%46,340 psi79%3127 fps95.7%
Rottweil R 901<<locked>>98%42,105 psi72%3045 fps95.6%
Shooters World AR Plus<<locked>>90%46,079 psi78%3133 fps95.8%
Shooters World Buffalo Rifle<<locked>>80%49,429 psi84%3133 fps100%
SNPE Vectan BA6 1/2<<locked>>80%37,420 psi64%2700 fps100%
SNPE Vectan SP 1023.1 gr88%39,856 psi68%3022 fps95%
SNPE Vectan SP 3<<locked>>86%34,679 psi59%2881 fps95.6%
SNPE Vectan Tubal 3000<<locked>>96%40,016 psi68%2927 fps95%
Somchem S335<<locked>>94%36,100 psi61%2867 fps95%
Vihtavuori N110<<locked>>80%47,137 psi80%2946 fps100%
Vihtavuori N120<<locked>>80%33,721 psi57%2822 fps100%
Vihtavuori N130<<locked>>82%28,863 psi49%2684 fps95.4%
Vihtavuori N133<<locked>>90%32,445 psi55%2782 fps95.6%
Vihtavuori N135<<locked>>94%29,849 psi51%2799 fps95%

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 41 powders for .222 Rem. Mag. loaded with the .224 | 55gr | Hornady GMX. SNPE Vectan SP 10 delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 1,975 fps to 3,264 fps. Accurate 2015 gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (405 MPa), the top charges use 52–90 %, 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 2015, Accurate 2460, Accurate 2495 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. ADI AR 2219, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for .222 Rem. 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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