Load data for .223 Rem. (5.56 x 45 NATO) + .224 | 55gr | Sierra FMJBT GameKing

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.224 \| 55gr \| Sierra FMJBT GameKing
Manufacturer SKU:	1355
Bullet Weight:	55gr \| 3.6g
Bullet Diameter:	0.224" \| 5.69mm
Bullet Length:	<<locked>>
Caliber:	.223 Rem. (5.56 x 45 NATO) load data
Case Length (l3):	1.759" \| 44.7mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	30.0 Grains of Water \| 1.95 cm³
Primer Size:	Small Rifle (SR)
Max. allowed Pressure:	62366 psi \| 4300 bar
LID:	LID_B5740_C134
Last updated:	2026-04-12
Recommended Twist Rate:	1:12 - 1:10

Load data for 106 loads in caliber .223 Rem. (5.56 x 45 NATO) with .224 | 55gr | Sierra FMJBT GameKing bullet and 53 powder(s). The key underlying parameters are shown in the table above.

Important Notice: DO NOT go below Minimum Charge or above Maximum Charge unless there are reasons. Since xxlreloading.com has no control over the equipment and components used by the customer and the data used in connection with the website, any responsibility and liability for the results achieved is rejected. Also see our Terms of Service.

Questions regarding the load data: Please read the information in the next tab "Explanations".
A load must fulfill certain criteria to be listed in the default view below - see "powder criteria to fulfill to be listed".

Our load data might deviate from other sources - see the "most common reasons for deviations".

All loads are based on the bullet and case dimensions shown under "Load Specifications" - see "reloading suggestions" if you deviate.

You can set your specifications in the "Personalized Load Calculator".

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Our default view only displays powders/loads that fulfill certain criteria: Max pressure of a load <=90% of Max. Standardized Pressure. Fill Rate (Min FR): >80% and <100% for rife loads, >60% and <100% for pistol loads. Min. Propellant Combustion (Min z): >90% for rifle loads , >80% for pistol/revolver loads. Relax these criteria at your own risk to potentially get more powders shown in the load tables.
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.

Click on the desired row in the tables below to add a specific load / powder to your Diary and manage there.

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2207	<<locked>>	93%	54708	88%	**96	100%
ADI AR 2219 👍	<<locked>>	95%	54592	88%	**55	99%
[ADI Benchmark 8208]*	<<locked>>	96%	43772	70%	**15	93%
Accurate 1680	<<locked>>	85%	55666	89%	**89	99%
Accurate 2015	<<locked>>	96%	46659	75%	**87	99%
[Accurate 2230]*	<<locked>>	97%	53243	85%	**56	94%
Accurate 2460	<<locked>>	97%	51822	83%	**59	96%
Accurate 2495	<<locked>>	96%	37724	60%	**95	97%
[Accurate 2520]*	<<locked>>	96%	40756	65%	**15	94%
[Accurate 4064]*	<<locked>>	96%	31125	50%	**12	92%
Alliant AR-Comp	<<locked>>	96%	40640	65%	**58	100%
Alliant Reloder-10x 👍	<<locked>>	96%	51387	82%	**92	100%
Alliant Reloder-7	<<locked>>	92%	55883	90%	**89	100%
Baschieri & Pellagri 106 👍	<<locked>>	95%	54331	87%	**17	99%
[Hodgdon BL-C2]*	<<locked>>	97%	42975	69%	**61	92%
Hodgdon Benchmark	<<locked>>	96%	47282	76%	**41	95%
Hodgdon H322	<<locked>>	96%	46325	74%	**10	98%
Hodgdon H335	<<locked>>	96%	54955	88%	**55	98%
Hodgdon H4198	<<locked>>	93%	54230	87%	**40	98%
Hodgdon TrailBoss	<<locked>>	96%	29994	48%	**32	100%
IMR 3031	<<locked>>	97%	35752	57%	**43	96%
IMR 4198 👍	<<locked>>	96%	52417	84%	**59	100%
IMR 4227	<<locked>>	87%	55187	88%	**40	100%
[IMR 8208 XBR]*	<<locked>>	96%	43772	70%	**15	93%
Lovex D073.4	<<locked>>	97%	54360	87%	**92	97%
Lovex D073.5	<<locked>>	97%	50691	81%	**46	96%
[Lovex D073.6]*	<<locked>>	97%	38174	61%	**59	93%
Lovex S053	<<locked>>	88%	54346	87%	**94	100%
Norma 200 👍	<<locked>>	95%	55941	90%	**32	100%
[Norma 201]*	<<locked>>	96%	39900	64%	**36	91%
Norma 202	<<locked>>	96%	39639	64%	**76	95%
[Ramshot X-Terminator]*	<<locked>>	96%	49487	79%	**87	92%
ReloadSwiss RS 14	<<locked>>	96%	29718	48%	**75	100%
ReloadSwiss RS 36	<<locked>>	87%	54839	88%	**66	100%
ReloadSwiss RS 40	<<locked>>	96%	50705	81%	**56	96%
Rottweil R 901	<<locked>>	96%	44106	71%	**35	96%
SNPE Vectan BA6 1/2	<<locked>>	91%	54302	87%	**23	100%
SNPE Vectan SP 10	<<locked>>	95%	54433	87%	**48	98%
SNPE Vectan Tubal 3000	<<locked>>	97%	44338	71%	**69	96%
[SNPE Vectan Tubal 5000]*	<<locked>>	97%	35447	57%	**85	94%
[Shooters World Match Rifle]*	<<locked>>	97%	38174	61%	**59	93%
Shooters World Tactical Rifle	<<locked>>	96%	54578	88%	**59	95%
Somchem S321	<<locked>>	97%	49255	79%	**50	95%
Somchem S335	<<locked>>	96%	41698	67%	**40	96%
Vihtavuori N120	<<locked>>	93%	54810	88%	**43	100%
Vihtavuori N130	<<locked>>	97%	50024	80%	**87	100%
Vihtavuori N133	<<locked>>	97%	43337	69%	**72	98%
Vihtavuori N135	<<locked>>	97%	33910	54%	**44	95%
Vihtavuori N140	<<locked>>	97%	38638	62%	**17	95%
[Vihtavuori N530]*	<<locked>>	97%	44918	72%	**38	93%
[Vihtavuori N540]*	<<locked>>	97%	37115	60%	**87	93%
Winchester 748	<<locked>>	97%	47805	77%	**53	95%
[Winchester StaBALL Match]*	<<locked>>	96%	51459	83%	**86	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2207	<<locked>>	81%	37826	61%	**07	100%
[ADI AR 2219]*	<<locked>>	81%	33605	54%	**22	93%
[ADI Benchmark 8208]*	<<locked>>	91%	37188	60%	**71	90%
Accurate 1680	<<locked>>	81%	49284	79%	**84	99%
[Accurate 2015]*	<<locked>>	81%	28587	46%	**64	94%
[Accurate 2230]*	<<locked>>	89%	39566	63%	**04	90%
[Accurate 2460]*	<<locked>>	86%	34432	55%	**08	90%
[Accurate 2495]*	<<locked>>	82%	23105	37%	**75	90%
[Accurate 2520]*	<<locked>>	89%	31749	51%	**99	90%
[Accurate 4064]*	<<locked>>	94%	28689	46%	**40	91%
[Alliant AR-Comp]*	<<locked>>	81%	25106	40%	**08	94%
Alliant Reloder-10x	<<locked>>	81%	31473	50%	**66	96%
Alliant Reloder-7	<<locked>>	81%	39073	63%	**97	99%
Baschieri & Pellagri 106	<<locked>>	81%	34751	56%	**43	95%
[Hodgdon BL-C2]*	<<locked>>	93%	38116	61%	**49	90%
[Hodgdon Benchmark]*	<<locked>>	87%	36143	58%	**02	91%
[Hodgdon H322]*	<<locked>>	81%	28616	46%	**71	91%
[Hodgdon H335]*	<<locked>>	81%	32982	53%	**99	92%
Hodgdon H4198	<<locked>>	81%	38014	61%	**28	95%
Hodgdon TrailBoss	<<locked>>	81%	23873	38%	**81	100%
[IMR 3031]*	<<locked>>	87%	26963	43%	**74	91%
IMR 4198	<<locked>>	81%	33663	54%	**76	98%
IMR 4227	<<locked>>	81%	45063	72%	**76	100%
[IMR 8208 XBR]*	<<locked>>	91%	37188	60%	**71	90%
[Lovex D073.4]*	<<locked>>	84%	34447	55%	**02	90%
[Lovex D073.5]*	<<locked>>	85%	33750	54%	**92	90%
[Lovex D073.6]*	<<locked>>	91%	31140	50%	**82	90%
Lovex S053	<<locked>>	81%	44411	71%	**33	100%
Norma 200	<<locked>>	81%	35926	58%	**67	98%
[Norma 201]*	<<locked>>	94%	36898	59%	**67	90%
[Norma 202]*	<<locked>>	87%	30052	48%	**23	90%
[Ramshot X-Terminator]*	<<locked>>	93%	44179	71%	**82	91%
ReloadSwiss RS 14	<<locked>>	82%	23844	38%	**27	100%
ReloadSwiss RS 36	<<locked>>	81%	45107	72%	**09	100%
[ReloadSwiss RS 40]*	<<locked>>	83%	32648	52%	**69	90%
[Rottweil R 901]*	<<locked>>	85%	31067	50%	**20	91%
SNPE Vectan BA6 1/2	<<locked>>	81%	41191	66%	**30	100%
[SNPE Vectan SP 10]*	<<locked>>	81%	33982	54%	**28	92%
[SNPE Vectan Tubal 3000]*	<<locked>>	85%	30545	49%	**44	91%
[SNPE Vectan Tubal 5000]*	<<locked>>	89%	27833	45%	**75	90%
[Shooters World Match Rifle]*	<<locked>>	91%	31140	50%	**82	90%
[Shooters World Tactical Rifle]*	<<locked>>	86%	39450	63%	**74	90%
[Somchem S321]*	<<locked>>	88%	35810	57%	**64	90%
[Somchem S335]*	<<locked>>	82%	27122	43%	**66	90%
Vihtavuori N120	<<locked>>	81%	37985	61%	**67	100%
Vihtavuori N130	<<locked>>	81%	30821	49%	**87	96%
[Vihtavuori N133]*	<<locked>>	81%	26760	43%	**59	92%
[Vihtavuori N135]*	<<locked>>	88%	25628	41%	**95	91%
[Vihtavuori N140]*	<<locked>>	88%	29341	47%	**71	90%
[Vihtavuori N530]*	<<locked>>	92%	38189	61%	**90	91%
[Vihtavuori N540]*	<<locked>>	91%	30719	49%	**23	90%
[Winchester 748]*	<<locked>>	88%	35085	56%	**67	90%
[Winchester StaBALL Match]*	<<locked>>	90%	40712	65%	**72	90%

Start Load - Barrel Length: 23.60''

Any powder missing? Then click here.

FR ... fill rate of the cartridge in percent

MaxP ... max. pressure of load in psi or bar

% ... max. pressure of load in percent of the maximum allowed pressure for this caliber

V(0) ... muzzle velocity in feet per second (fps) or meters per second (m/s)

z ... powder burnt in percent

[...] *... not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.

[...] ²... fill rate low - you might want to consider using a filler to ensure proper ignition.

[...] ᴾ... possible press load - work up slowly to this load while watching for signs of excessive pressure.

👍 ... recommended powder/load for this caliber and bullet combination based on its ballistic performance.

<<locked>>... you need to buy an access license to unlock the data