Load data for .222 Rem. Mag. + .224 | 50gr | Sierra SP SemiSp

.222 Rem. Mag. cartridge drawing
Sierra logo

Load Specifications

Bullet Manufacturer:Sierra
Bullet Weight:50 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

Load data in caliber .222 Rem. Mag. with .224 | 50gr | Sierra SP SemiSp bullet and 40 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.

A valid access license is required to use the Personalized Load Calculator.

You can find more information in our FAQ: How can I use the Personalized Load Calculator?

Max Load - Barrel Length: 26"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>88%51,314 psi87%3258 fps99.8%
Accurate 2015ᴾ<<locked>>100%46,992 psi80%3268 fps98.9%
Accurate 2460ᴾ<<locked>>100%52,881 psi90%3376 fps97.4%
Accurate 2495ᴾ<<locked>>100%34,896 psi59%3087 fps96.7%
Accurate LT-30<<locked>>94%51,256 psi87%3251 fps98.3%
Accurate LT-32<<locked>>94%51,750 psi88%3255 fps96.5%
ADI AR 2205<<locked>>82%52,910 psi90%3179 fps100%
ADI AR 2207<<locked>>94%53,113 psi90%3373 fps100%
ADI AR 2219<<locked>>96%52,779 psi90%3419 fps98.5%
Alliant AR-Compᴾ<<locked>>100%43,004 psi73%3291 fps99.8%
Alliant Reloder-10x<<locked>>98%50,328 psi86%3366 fps99.8%
Alliant Reloder-7<<locked>>92%52,185 psi89%3327 fps99.9%
Baschieri & Pellagri 106<<locked>>96%53,156 psi90%3281 fps98.9%
Hodgdon H322<<locked>>98%50,082 psi85%3369 fps98%
Hodgdon H335<<locked>>98%51,967 psi88%3392 fps97.5%
Hodgdon H4198<<locked>>90%49,995 psi85%3255 fps97.5%
Hodgdon TrailBossᴾ<<locked>>100%30,966 psi53%2090 fps100%
IMR 3031ᴾ<<locked>>100%40,973 psi70%3251 fps96.9%
IMR 4198<<locked>>98%51,982 psi88%3346 fps100%
IMR 4227<<locked>>88%52,982 psi90%3297 fps100%
Lovex D060<<locked>>82%52,750 psi90%3346 fps100%
Lovex D073.4<<locked>>92%49,995 psi85%3340 fps96%
Lovex S053<<locked>>88%51,430 psi88%3245 fps100%
Norma 200<<locked>>94%50,908 psi87%3353 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%30,835 psi52%2139 fps100%
ReloadSwiss RS 36<<locked>>86%50,125 psi85%3284 fps100%
ReloadSwiss RS 40<<locked>>98%50,444 psi86%3340 fps96%
Rottweil R 901ᴾ<<locked>>100%46,122 psi79%3258 fps96%
Shooters World AR Plus<<locked>>92%49,995 psi85%3340 fps96%
Shooters World Buffalo Rifle<<locked>>82%52,750 psi90%3346 fps100%
SNPE Vectan BA6 1/2<<locked>>92%52,025 psi89%3077 fps100%
SNPE Vectan SP 10<<locked>>96%52,707 psi90%3406 fps97.5%
SNPE Vectan SP 3<<locked>>98%51,735 psi88%3373 fps98.9%
SNPE Vectan Tubal 3000ᴾ<<locked>>100%46,035 psi78%3179 fps96%
Somchem S335ᴾ<<locked>>100%44,019 psi75%3166 fps96.7%
Vihtavuori N110<<locked>>82%50,720 psi86%3153 fps100%
Vihtavuori N120<<locked>>92%50,531 psi86%3274 fps100%
Vihtavuori N130ᴾ<<locked>>100%51,837 psi88%3307 fps99.8%
Vihtavuori N133ᴾ<<locked>>100%44,933 psi76%3186 fps98.4%
Vihtavuori N135ᴾ<<locked>>100%36,985 psi63%3114 fps97%

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%39,001 psi66%3022 fps98.1%
Accurate 2015<<locked>>90%33,968 psi58%2989 fps95.8%
Accurate 2460<<locked>>94%42,366 psi72%3182 fps95%
Accurate 2495<<locked>>96%30,342 psi52%2966 fps95%
Accurate LT-30<<locked>>84%37,565 psi64%2972 fps95%
Accurate LT-32<<locked>>90%45,745 psi78%3143 fps95.1%
ADI AR 2205<<locked>>80%49,690 psi85%3130 fps100%
ADI AR 2207<<locked>>80%34,476 psi59%3015 fps99.7%
ADI AR 221923.5 gr88%39,842 psi68%3159 fps95.6%
Alliant AR-Comp<<locked>>86%27,499 psi47%2867 fps95.5%
Alliant Reloder-10x<<locked>>82%30,327 psi52%2913 fps95.6%
Alliant Reloder-7<<locked>>80%35,752 psi61%2995 fps97.9%
Baschieri & Pellagri 106<<locked>>84%35,998 psi61%2946 fps95%
Hodgdon H322<<locked>>90%38,827 psi66%3136 fps95.2%
Hodgdon H33525.4 gr92%41,989 psi71%3199 fps95.1%
Hodgdon H4198<<locked>>84%41,481 psi71%3084 fps95.5%
Hodgdon TrailBoss<<locked>>80%22,858 psi39%1880 fps100%
IMR 3031<<locked>>96%36,114 psi61%3130 fps95.3%
IMR 4198<<locked>>80%30,922 psi53%2881 fps96.6%
IMR 4227<<locked>>80%41,423 psi71%3087 fps99.8%
Lovex D060<<locked>>80%50,198 psi85%3301 fps99.9%
Lovex D073.4<<locked>>90%46,731 psi80%3281 fps95.3%
Lovex S053<<locked>>80%40,944 psi70%3058 fps100%
Norma 200<<locked>>80%32,518 psi55%2963 fps97.2%
ReloadSwiss RS 14<<locked>>80%22,466 psi38%1919 fps100%
ReloadSwiss RS 36<<locked>>80%40,959 psi70%3114 fps99.7%
ReloadSwiss RS 40<<locked>>96%46,775 psi80%3271 fps95.1%
Rottweil R 901<<locked>>98%43,381 psi74%3199 fps95.2%
Shooters World AR Plus<<locked>>90%46,731 psi80%3281 fps95.3%
Shooters World Buffalo Rifle<<locked>>80%50,198 psi85%3301 fps99.9%
SNPE Vectan BA6 1/2<<locked>>80%37,869 psi64%2848 fps100%
SNPE Vectan SP 1024.9 gr90%43,192 psi74%3225 fps95.4%
SNPE Vectan SP 3<<locked>>86%35,172 psi60%3022 fps95%
SNPE Vectan Tubal 3000<<locked>>98%43,192 psi74%3123 fps95.2%
Somchem S335<<locked>>96%38,928 psi66%3058 fps95.2%
Vihtavuori N110<<locked>>80%47,398 psi81%3104 fps100%
Vihtavuori N120<<locked>>80%34,635 psi59%2976 fps100%
Vihtavuori N130<<locked>>84%31,633 psi54%2881 fps95.8%
Vihtavuori N133<<locked>>90%32,808 psi56%2910 fps95%
Vihtavuori N135<<locked>>96%32,518 psi55%2995 fps95.3%

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 40 powders for .222 Rem. Mag. loaded with the .224 | 50gr | Sierra SP SemiSp. ADI AR 2219 delivers the highest muzzle velocity at 3,419 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,419 fps. Accurate 2015 gives the best case fill at 100 %, and 40 of the 40 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. 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 | 50gr | Sierra SP SemiSp 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.

← All load data