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

Recommended Powder(s): ADI AR 2207, Alliant Reloder-10x, Alliant Reloder-7, IMR 4198, Norma 200

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.224 \| 55gr \| Sierra SBT GameKing
Manufacturer SKU:	1365
Bullet Weight:	55gr \| 3.6g
Bullet Diameter:	0.224" \| 5.69mm
Bullet Length:	0.722" \| 18.3mm
Caliber:	.223 Rem. (5.56 x 45 NATO) load data
Case Length (l3):	1.759" \| 44.7mm
Cartridge Length (C.O.L.):	2.226" \| 56.5mm
Seated Depth:	0.255" \| 6.5mm
Shank Seated Depth:	0.180" \| 4.6mm
Case Capacity:	28.8 Grains of Water \| 1.87 cm³
Primer Size:	Small Rifle (SR)
Max. allowed Pressure:	62366 psi \| 4300 bar
LID:	LID_B5747_C134
Last updated:	2025-02-02
Recommended Twist Rate:	1:12 - 1:10

Load data for 100 loads in caliber .223 Rem. (5.56 x 45 NATO) with .224 | 55gr | Sierra SBT GameKing bullet and 50 powders such as ADI AR 2207, Alliant Reloder-10x, Alliant Reloder-7, IMR 4198, Norma 200. 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".

Go to the bottom of the "My Account " page to set the measure system (imperial vs. metric)
Muzzle velocity vs. barrel length
Every 1 inch additional barrel length increases muzzle velocity by approx. 29.1 fps
C.O.L. (Inch)
C.O.L. (mm)
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.
Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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.

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>>	94%	55463	89%	**92	100%
ADI AR 2219	<<locked>>	96%	53505	86%	**15	98%
Accurate 1680	<<locked>>	86%	55317	89%	**63	99%
Accurate 2015	<<locked>>	97%	45397	73%	**35	99%
[Accurate 2230]*	<<locked>>	96%	49342	79%	**71	93%
Accurate 2460	<<locked>>	96%	47848	77%	**74	95%
Accurate 2495	<<locked>>	97%	36187	58%	**46	97%
[Accurate 2520]*	<<locked>>	96%	38783	62%	**49	93%
Alliant AR-Comp	<<locked>>	97%	39407	63%	**09	99%
Alliant Reloder-10x 👍	<<locked>>	97%	50212	81%	**50	100%
Alliant Reloder-7 👍	<<locked>>	93%	54650	88%	**50	100%
Baschieri & Pellagri 106	<<locked>>	96%	54868	88%	**00	99%
[Hodgdon Benchmark]*	<<locked>>	97%	46427	74%	**02	94%
Hodgdon CFE BLK	<<locked>>	93%	55579	89%	**10	95%
Hodgdon H322	<<locked>>	97%	45049	72%	**64	97%
Hodgdon H335	<<locked>>	96%	53258	85%	**99	98%
Hodgdon H4198	<<locked>>	95%	55085	88%	**30	98%
Hodgdon TrailBoss	<<locked>>	96%	29805	48%	**09	100%
[IMR 3031]*	<<locked>>	96%	33301	53%	**54	94%
IMR 4198 👍	<<locked>>	96%	50966	82%	**14	100%
IMR 4227	<<locked>>	88%	54897	88%	**07	100%
[IMR 8208 XBR]*	<<locked>>	97%	42714	68%	**72	92%
Lovex D073.4	<<locked>>	97%	51372	82%	**20	95%
Lovex D073.5	<<locked>>	96%	47848	77%	**74	95%
[Lovex D073.6]*	<<locked>>	97%	36434	58%	**94	92%
Lovex S053	<<locked>>	89%	54824	88%	**77	100%
Norma 200 👍	<<locked>>	95%	54389	87%	**92	100%
[Norma 202]*	<<locked>>	96%	37840	61%	**10	94%
ReloadSwiss RS 14	<<locked>>	96%	29530	47%	**52	100%
ReloadSwiss RS 36	<<locked>>	89%	55709	89%	**59	100%
ReloadSwiss RS 40	<<locked>>	96%	47921	77%	**91	95%
Rottweil R 901	<<locked>>	97%	42830	69%	**79	95%
SNPE Vectan BA6 1/2	<<locked>>	94%	55825	90%	**23	100%
SNPE Vectan SP 10	<<locked>>	96%	54911	88%	**32	98%
SNPE Vectan Tubal 3000	<<locked>>	96%	41510	67%	**87	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	96%	33257	53%	**10	93%
[Shooters World Match Rifle]*	<<locked>>	97%	36434	58%	**94	92%
[Shooters World Tactical Rifle]*	<<locked>>	97%	53911	86%	**20	94%
[Somchem S321]*	<<locked>>	96%	45687	73%	**54	93%
Somchem S335	<<locked>>	97%	40611	65%	**97	96%
Vihtavuori N110	<<locked>>	84%	54824	88%	**09	100%
Vihtavuori N120	<<locked>>	96%	53650	86%	**10	100%
Vihtavuori N130	<<locked>>	96%	45382	73%	**89	99%
Vihtavuori N133	<<locked>>	96%	37811	61%	**48	97%
[Vihtavuori N135]*	<<locked>>	97%	28355	45%	**67	92%
[Vihtavuori N140]*	<<locked>>	97%	36013	58%	**28	93%
[Vihtavuori N530]*	<<locked>>	96%	44411	71%	**25	93%
[Vihtavuori N540]*	<<locked>>	96%	35302	57%	**38	92%
[Winchester 748]*	<<locked>>	96%	44541	71%	**68	93%
[Winchester StaBALL Match]*	<<locked>>	97%	50183	80%	**33	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2207	<<locked>>	81%	36071	58%	**48	100%
[ADI AR 2219]*	<<locked>>	81%	32489	52%	**69	92%
Accurate 1680	<<locked>>	81%	46905	75%	**18	98%
[Accurate 2015]*	<<locked>>	81%	27238	44%	**08	93%
[Accurate 2230]*	<<locked>>	92%	41321	66%	**23	90%
[Accurate 2460]*	<<locked>>	88%	35418	57%	**18	90%
[Accurate 2495]*	<<locked>>	85%	24004	38%	**02	91%
[Accurate 2520]*	<<locked>>	92%	32677	52%	**02	90%
[Alliant AR-Comp]*	<<locked>>	81%	23975	38%	**43	93%
Alliant Reloder-10x	<<locked>>	81%	29965	48%	**07	95%
Alliant Reloder-7	<<locked>>	81%	37579	60%	**38	98%
[Baschieri & Pellagri 106]*	<<locked>>	81%	33112	53%	**80	94%
[Hodgdon Benchmark]*	<<locked>>	89%	36550	59%	**85	90%
[Hodgdon CFE BLK]*	<<locked>>	82%	38914	62%	**99	90%
[Hodgdon H322]*	<<locked>>	82%	28660	46%	**51	90%
[Hodgdon H335]*	<<locked>>	81%	31430	50%	**30	90%
[Hodgdon H4198]*	<<locked>>	81%	36564	59%	**66	94%
Hodgdon TrailBoss	<<locked>>	81%	23482	38%	**55	100%
[IMR 3031]*	<<locked>>	90%	28282	45%	**90	91%
IMR 4198	<<locked>>	81%	32242	52%	**17	97%
IMR 4227	<<locked>>	81%	44179	71%	**36	100%
[IMR 8208 XBR]*	<<locked>>	94%	39465	63%	**00	90%
[Lovex D073.4]*	<<locked>>	87%	36216	58%	**25	91%
[Lovex D073.5]*	<<locked>>	88%	35418	57%	**18	90%
[Lovex D073.6]*	<<locked>>	94%	33330	53%	**25	91%
Lovex S053	<<locked>>	81%	42815	69%	**87	100%
Norma 200	<<locked>>	81%	34272	55%	**08	98%
[Norma 202]*	<<locked>>	90%	30850	49%	**26	90%
ReloadSwiss RS 14	<<locked>>	81%	23409	38%	**98	100%
ReloadSwiss RS 36	<<locked>>	81%	43540	70%	**59	100%
[ReloadSwiss RS 40]*	<<locked>>	86%	34505	55%	**89	90%
[Rottweil R 901]*	<<locked>>	86%	30908	50%	**94	90%
SNPE Vectan BA6 1/2	<<locked>>	81%	40103	64%	**90	100%
[SNPE Vectan SP 10]*	<<locked>>	81%	32358	52%	**59	91%
[SNPE Vectan Tubal 3000]*	<<locked>>	87%	30705	49%	**31	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	92%	29312	47%	**95	91%
[Shooters World Match Rifle]*	<<locked>>	94%	33330	53%	**25	91%
[Shooters World Tactical Rifle]*	<<locked>>	88%	40292	65%	**71	90%
[Somchem S321]*	<<locked>>	90%	37289	60%	**81	90%
[Somchem S335]*	<<locked>>	85%	28152	45%	**85	90%
Vihtavuori N110	<<locked>>	81%	50473	81%	**46	100%
Vihtavuori N120	<<locked>>	81%	33576	54%	**49	100%
[Vihtavuori N130]*	<<locked>>	81%	28529	46%	**05	94%
[Vihtavuori N133]*	<<locked>>	83%	25048	40%	**90	90%
[Vihtavuori N135]*	<<locked>>	94%	26107	42%	**92	91%
[Vihtavuori N140]*	<<locked>>	91%	30472	49%	**80	90%
[Vihtavuori N530]*	<<locked>>	92%	38986	63%	**04	90%
[Vihtavuori N540]*	<<locked>>	92%	31299	50%	**30	90%
[Winchester 748]*	<<locked>>	91%	37913	61%	**13	91%
[Winchester StaBALL Match]*	<<locked>>	92%	42627	68%	**89	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.