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:	2026-03-23
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>>	95%	55753	89%	**92	100%
ADI AR 2219 👍	<<locked>>	96%	54157	87%	**22	99%
[ADI Benchmark 8208]*	<<locked>>	97%	42989	69%	**72	92%
Accurate 1680	<<locked>>	86%	56101	90%	**69	99%
Accurate 2015	<<locked>>	97%	44657	72%	**22	99%
[Accurate 2230]*	<<locked>>	97%	49501	79%	**71	93%
Accurate 2460	<<locked>>	97%	48269	77%	**77	95%
Accurate 2495	<<locked>>	97%	35636	57%	**33	96%
[Accurate 2520]*	<<locked>>	97%	39363	63%	**63	93%
Alliant AR-Comp	<<locked>>	97%	39885	64%	**15	99%
Alliant Reloder-10x 👍	<<locked>>	97%	49385	79%	**30	100%
Alliant Reloder-7 👍	<<locked>>	93%	54969	88%	**59	100%
Baschieri & Pellagri 106	<<locked>>	97%	55143	88%	**07	99%
[Hodgdon Benchmark]*	<<locked>>	97%	45788	73%	**89	94%
Hodgdon H322	<<locked>>	97%	44817	72%	**58	97%
Hodgdon H335	<<locked>>	96%	53635	86%	**12	98%
Hodgdon H4198	<<locked>>	95%	55622	89%	**33	98%
Hodgdon TrailBoss	<<locked>>	97%	29863	48%	**09	100%
[IMR 3031]*	<<locked>>	97%	34127	55%	**71	94%
IMR 4198 👍	<<locked>>	97%	51474	83%	**23	100%
IMR 4227	<<locked>>	89%	55143	88%	**14	100%
[IMR 8208 XBR]*	<<locked>>	97%	42989	69%	**72	92%
Lovex D060	<<locked>>	83%	56072	90%	**82	100%
Lovex D073.4	<<locked>>	96%	50633	81%	**07	95%
Lovex D073.5	<<locked>>	97%	48269	77%	**77	95%
[Lovex D073.6]*	<<locked>>	97%	36042	58%	**87	92%
Lovex S053	<<locked>>	90%	55042	88%	**77	100%
Norma 200 👍	<<locked>>	96%	54766	88%	**96	100%
[Norma 202]*	<<locked>>	97%	38319	61%	**17	94%
[Ramshot X-Terminator]*	<<locked>>	97%	48327	77%	**28	91%
ReloadSwiss RS 14	<<locked>>	97%	29733	48%	**55	100%
ReloadSwiss RS 36	<<locked>>	89%	55970	90%	**59	100%
ReloadSwiss RS 40	<<locked>>	96%	48240	77%	**91	95%
Rottweil R 901	<<locked>>	97%	42525	68%	**72	95%
SNPE Vectan BA6 1/2	<<locked>>	93%	54911	88%	**13	100%
SNPE Vectan SP 10	<<locked>>	97%	55259	89%	**32	98%
SNPE Vectan Tubal 3000	<<locked>>	96%	41640	67%	**87	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	96%	33504	54%	**13	93%
Shooters World Buffalo Rifle	<<locked>>	83%	56072	90%	**82	100%
[Shooters World Match Rifle]*	<<locked>>	97%	36042	58%	**87	92%
[Shooters World Tactical Rifle]*	<<locked>>	96%	53490	86%	**17	94%
[Somchem S321]*	<<locked>>	97%	46311	74%	**64	93%
Somchem S335	<<locked>>	97%	40176	64%	**90	95%
Vihtavuori N110	<<locked>>	84%	55259	89%	**12	100%
Vihtavuori N120	<<locked>>	96%	54433	87%	**17	100%
Vihtavuori N130	<<locked>>	97%	46673	75%	**12	99%
Vihtavuori N133	<<locked>>	97%	38029	61%	**51	97%
[Vihtavuori N135]*	<<locked>>	96%	27978	45%	**51	92%
[Vihtavuori N140]*	<<locked>>	97%	36260	58%	**38	93%
[Vihtavuori N530]*	<<locked>>	96%	44730	72%	**28	93%
[Vihtavuori N540]*	<<locked>>	97%	35563	57%	**44	92%
[Winchester 748]*	<<locked>>	97%	44860	72%	**68	93%
[Winchester StaBALL Match]*	<<locked>>	97%	49879	80%	**30	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2207	<<locked>>	81%	36419	58%	**51	100%
[ADI AR 2219]*	<<locked>>	81%	32053	51%	**56	92%
[ADI Benchmark 8208]*	<<locked>>	94%	38870	62%	**87	90%
Accurate 1680	<<locked>>	81%	46572	75%	**12	98%
[Accurate 2015]*	<<locked>>	81%	26745	43%	**89	93%
[Accurate 2230]*	<<locked>>	92%	41655	67%	**27	90%
[Accurate 2460]*	<<locked>>	88%	35201	56%	**12	90%
[Accurate 2495]*	<<locked>>	85%	23656	38%	**85	90%
[Accurate 2520]*	<<locked>>	91%	32518	52%	**95	90%
[Alliant AR-Comp]*	<<locked>>	81%	24120	39%	**52	93%
Alliant Reloder-10x	<<locked>>	81%	30124	48%	**07	95%
Alliant Reloder-7	<<locked>>	81%	37971	61%	**44	98%
[Baschieri & Pellagri 106]*	<<locked>>	81%	33489	54%	**94	94%
[Hodgdon Benchmark]*	<<locked>>	89%	36753	59%	**85	90%
[Hodgdon H322]*	<<locked>>	83%	28979	46%	**57	90%
[Hodgdon H335]*	<<locked>>	81%	31618	51%	**33	90%
[Hodgdon H4198]*	<<locked>>	81%	36071	58%	**53	94%
Hodgdon TrailBoss	<<locked>>	81%	23569	38%	**59	100%
[IMR 3031]*	<<locked>>	90%	27746	44%	**71	90%
IMR 4198	<<locked>>	81%	32532	52%	**30	97%
IMR 4227	<<locked>>	81%	43729	70%	**20	100%
[IMR 8208 XBR]*	<<locked>>	94%	38870	62%	**87	90%
Lovex D060	<<locked>>	81%	52678	84%	**27	100%
[Lovex D073.4]*	<<locked>>	86%	35288	57%	**95	90%
[Lovex D073.5]*	<<locked>>	88%	35201	56%	**12	90%
[Lovex D073.6]*	<<locked>>	94%	32518	52%	**95	90%
Lovex S053	<<locked>>	81%	42989	69%	**87	100%
Norma 200	<<locked>>	81%	33895	54%	**95	98%
[Norma 202]*	<<locked>>	90%	30458	49%	**13	90%
[Ramshot X-Terminator]*	<<locked>>	94%	44846	72%	**66	90%
ReloadSwiss RS 14	<<locked>>	82%	23554	38%	**01	100%
ReloadSwiss RS 36	<<locked>>	81%	42772	69%	**43	100%
[ReloadSwiss RS 40]*	<<locked>>	86%	33910	54%	**76	90%
[Rottweil R 901]*	<<locked>>	87%	31154	50%	**00	90%
SNPE Vectan BA6 1/2	<<locked>>	81%	39436	63%	**77	100%
[SNPE Vectan SP 10]*	<<locked>>	81%	32387	52%	**56	91%
[SNPE Vectan Tubal 3000]*	<<locked>>	87%	30893	50%	**35	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	91%	28558	46%	**72	90%
Shooters World Buffalo Rifle	<<locked>>	81%	52678	84%	**27	100%
[Shooters World Match Rifle]*	<<locked>>	94%	32518	52%	**95	90%
[Shooters World Tactical Rifle]*	<<locked>>	89%	40567	65%	**74	90%
[Somchem S321]*	<<locked>>	91%	37550	60%	**84	90%
[Somchem S335]*	<<locked>>	85%	28485	46%	**95	90%
Vihtavuori N110	<<locked>>	81%	50705	81%	**46	100%
Vihtavuori N120	<<locked>>	81%	33910	54%	**53	100%
[Vihtavuori N130]*	<<locked>>	81%	28689	46%	**08	94%
[Vihtavuori N133]*	<<locked>>	82%	24642	40%	**70	90%
[Vihtavuori N135]*	<<locked>>	94%	25730	41%	**75	90%
[Vihtavuori N140]*	<<locked>>	91%	30284	49%	**74	90%
[Vihtavuori N530]*	<<locked>>	91%	37869	61%	**81	90%
[Vihtavuori N540]*	<<locked>>	93%	31531	51%	**33	90%
[Winchester 748]*	<<locked>>	91%	36782	59%	**81	90%
[Winchester StaBALL Match]*	<<locked>>	93%	42960	69%	**92	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