Load data for .223 Rem. + .233 | 55gr | MRR Green Hunting

.223 Rem. cartridge drawing
MRR logo

Load Specifications

Bullet Manufacturer:MRR
Bullet Weight:55 gr
Bullet Diameter:0.223"
Bullet Length:<<locked>>
Case Length (l3):1.759"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:30 Grains of Water
Primer Size:Small Rifle (SR)
Barrel Length:24"
Max. allowed Pressure:55,000 psi
Recommended Twist Rate:1:9.0

Load data in caliber .223 Rem. with .233 | 55gr | MRR Green Hunting bullet and 34 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Alliant Reloder-10x 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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>86%47,587 psi87%2992 fps99.4%
Accurate 2015ᴾ<<locked>>100%46,325 psi84%3051 fps98.7%
Accurate 2460<<locked>>98%48,283 psi88%3094 fps96.4%
Accurate 2495ᴾ<<locked>>100%34,374 psi62%2881 fps96.4%
Accurate LT-30<<locked>>92%48,080 psi87%2992 fps97.7%
ADI AR 2207<<locked>>90%46,572 psi85%3058 fps100%
ADI AR 2219<<locked>>94%48,269 psi88%3130 fps97.6%
Alliant AR-Compᴾ<<locked>>100%42,453 psi77%3074 fps99.8%
Alliant Reloder-10x<<locked>>96%47,239 psi86%3100 fps99.5%
Alliant Reloder-7<<locked>>90%48,689 psi89%3058 fps99.8%
Baschieri & Pellagri 106<<locked>>94%49,458 psi90%3018 fps98.3%
Hodgdon H322<<locked>>98%49,647 psi90%3153 fps97.9%
Hodgdon H335<<locked>>96%47,572 psi86%3110 fps96.4%
Hodgdon H4198<<locked>>90%49,647 psi90%3038 fps97.4%
Hodgdon TrailBossᴾ<<locked>>100%31,357 psi57%1942 fps100%
IMR 3031ᴾ<<locked>>100%40,466 psi74%3035 fps96.7%
IMR 4198<<locked>>96%49,008 psi89%3087 fps99.9%
IMR 4227<<locked>>86%49,719 psi90%3031 fps100%
Lovex D073.4<<locked>>92%49,559 psi90%3127 fps95.8%
Lovex S053<<locked>>86%48,153 psi88%2982 fps100%
Norma 200<<locked>>92%47,065 psi86%3077 fps99.8%
ReloadSwiss RS 14ᴾ<<locked>>100%30,763 psi56%1978 fps100%
ReloadSwiss RS 36<<locked>>86%49,487 psi90%3064 fps100%
Rottweil R 901ᴾ<<locked>>100%45,382 psi83%3038 fps95.7%
Shooters World AR Plus<<locked>>92%49,559 psi90%3127 fps95.8%
SNPE Vectan BA6 1/2<<locked>>90%49,647 psi90%2844 fps100%
SNPE Vectan SP 10<<locked>>94%48,689 psi89%3127 fps96.6%
SNPE Vectan SP 3<<locked>>96%47,935 psi87%3097 fps98.3%
SNPE Vectan Tubal 3000ᴾ<<locked>>100%45,295 psi82%2963 fps95.7%
Somchem S335ᴾ<<locked>>100%43,627 psi79%2959 fps96.4%
Vihtavuori N120<<locked>>90%46,746 psi85%3012 fps100%
Vihtavuori N130<<locked>>98%48,356 psi88%3045 fps99.4%
Vihtavuori N133ᴾ<<locked>>100%44,222 psi80%2972 fps98.2%
Vihtavuori N135ᴾ<<locked>>100%36,376 psi66%2904 fps96.7%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%38,928 psi71%2825 fps98.1%
Accurate 2015<<locked>>90%33,620 psi61%2785 fps95.5%
Accurate 2460<<locked>>96%45,034 psi82%3035 fps95.6%
Accurate 2495<<locked>>98%31,865 psi58%2818 fps95.5%
Accurate LT-30<<locked>>86%39,871 psi72%2828 fps95.7%
ADI AR 2207<<locked>>80%34,127 psi62%2808 fps99.6%
ADI AR 2219<<locked>>88%39,334 psi72%2946 fps95.3%
Alliant AR-Comp<<locked>>86%27,412 psi50%2677 fps95.3%
Alliant Reloder-10x18.5 gr82%30,197 psi55%2720 fps95.5%
Alliant Reloder-7<<locked>>80%35,621 psi65%2795 fps97.8%
Baschieri & Pellagri 106<<locked>>86%37,971 psi69%2802 fps95.6%
Hodgdon H32222 gr92%40,988 psi75%2982 fps95.8%
Hodgdon H335<<locked>>94%44,512 psi81%3051 fps95.7%
Hodgdon H4198<<locked>>84%41,133 psi75%2874 fps95.3%
Hodgdon TrailBoss<<locked>>80%22,597 psi41%1729 fps100%
IMR 3031<<locked>>96%35,824 psi65%2923 fps95%
IMR 4198<<locked>>80%30,850 psi56%2684 fps96.6%
IMR 4227<<locked>>80%41,437 psi75%2884 fps99.8%
Lovex D073.4<<locked>>90%46,122 psi84%3064 fps95%
Lovex S053<<locked>>80%40,828 psi74%2854 fps100%
Norma 200<<locked>>80%32,039 psi58%2756 fps97%
ReloadSwiss RS 14<<locked>>80%22,727 psi41%1778 fps100%
ReloadSwiss RS 36<<locked>>80%40,915 psi74%2907 fps99.7%
Rottweil R 901<<locked>>98%43,062 psi78%2992 fps95%
Shooters World AR Plus<<locked>>90%46,122 psi84%3064 fps95%
SNPE Vectan BA6 1/2<<locked>>80%37,768 psi69%2651 fps100%
SNPE Vectan SP 10<<locked>>90%42,598 psi77%3009 fps95%
SNPE Vectan SP 319.9 gr88%37,391 psi68%2881 fps95.7%
SNPE Vectan Tubal 3000<<locked>>98%42,844 psi78%2917 fps95%
Somchem S335<<locked>>96%38,740 psi70%2861 fps95%
Vihtavuori N120<<locked>>80%34,330 psi62%2776 fps100%
Vihtavuori N130<<locked>>84%31,256 psi57%2684 fps95.6%
Vihtavuori N133<<locked>>92%34,635 psi63%2769 fps95.6%
Vihtavuori N135<<locked>>96%32,097 psi58%2795 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 34 powders for .223 Rem. loaded with the .233 | 55gr | MRR Green Hunting. Hodgdon H322 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,942 fps to 3,153 fps. Accurate 2015 gives the best case fill at 100 %, and 34 of the 34 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (379 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.223" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Alliant AR-Comp 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. Hodgdon H322, Alliant Reloder-10x, SNPE Vectan SP 3 rank at the top here: for .223 Rem. with the .233 | 55gr | MRR Green Hunting 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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