Load data for .243 Ackley Improved + .243 | 55gr | Sierra Blitzking

Recommended Powder(s): Accurate 2520, Accurate 4064, IMR 3031, Lovex D073.6, ReloadSwiss RS 40

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 55gr \| Sierra Blitzking
Manufacturer SKU:	1502
Bullet Weight:	55gr \| 3.6g
Bullet Diameter:	0.243" \| 6.17mm
Bullet Length:	0.747" \| 19.0mm
Caliber:	.243 Ackley Improved load data
Case Length (l3):	2.045" \| 51.9mm
Cartridge Length (C.O.L.):	2.458" \| 62.4mm
Seated Depth:	0.334" \| 8.5mm
Shank Seated Depth:	0.334" \| 8.5mm
Case Capacity:	57.0 Grains of Water \| 3.70 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	55259 psi \| 3810 bar
LID:	LID_B5764_C1011
Last updated:	2025-01-01

Load data for 136 loads in caliber .243 Ackley Improved with .243 | 55gr | Sierra Blitzking bullet and 68 powders such as Accurate 2520, Accurate 4064, IMR 3031, Lovex D073.6, ReloadSwiss RS 40. 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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Safety Buffer (%)
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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 2206H	<<locked>>	89%	49385	89%	**84	96%
ADI AR 2208	<<locked>>	94%	49632	90%	**55	95%
Accurate 2015	<<locked>>	85%	49559	90%	**35	100%
[Accurate 2200]*	<<locked>>	87%	49371	89%	**32	94%
Accurate 2495	<<locked>>	88%	48863	88%	**78	100%
Accurate 2520 👍	<<locked>>	87%	49095	89%	**68	99%
Accurate 4064 👍	<<locked>>	94%	49400	89%	**84	99%
Alliant AR-Comp	<<locked>>	88%	49501	90%	**01	100%
Alliant Reloder- TS 15.5	<<locked>>	95%	49719	90%	**91	97%
Alliant Reloder-15	<<locked>>	92%	49110	89%	**81	95%
Alliant Reloder-17	<<locked>>	96%	47195	85%	**14	96%
Baschieri & Pellagri 107	<<locked>>	88%	49081	89%	**65	95%
Hodgdon BL-C2	<<locked>>	87%	49647	90%	**94	97%
Hodgdon Benchmark	<<locked>>	85%	49095	89%	**06	98%
Hodgdon CFE223	<<locked>>	92%	48907	89%	**94	95%
Hodgdon H322	<<locked>>	85%	49443	89%	**84	100%
[Hodgdon H380]*	<<locked>>	93%	49226	89%	**55	94%
[Hodgdon Hybrid 100V]*	<<locked>>	97%	37507	68%	**79	92%
[Hodgdon LVR]*	<<locked>>	97%	45136	82%	**93	92%
Hodgdon VARGET	<<locked>>	94%	49632	90%	**55	95%
Hodgdon TrailBoss	<<locked>>	96%	32430	59%	**18	100%
IMR 3031 👍	<<locked>>	92%	48747	88%	**30	100%
IMR 4064	<<locked>>	94%	48776	88%	**38	95%
IMR 4895	<<locked>>	91%	49356	89%	**20	96%
IMR 8208 XBR	<<locked>>	87%	48936	89%	**45	97%
Lovex D073.6 👍	<<locked>>	89%	49095	89%	**68	99%
Lovex S060	<<locked>>	88%	49066	89%	**96	96%
Lovex S062	<<locked>>	93%	49632	90%	**61	98%
[Lovex S065]*	<<locked>>	96%	45527	82%	**37	91%
Norma 201	<<locked>>	89%	49197	89%	**55	97%
Norma 202	<<locked>>	89%	48791	88%	**48	99%
Norma 203B	<<locked>>	92%	49240	89%	**88	96%
Ramshot Big Game	<<locked>>	92%	48878	88%	**91	96%
[Ramshot TAC]*	<<locked>>	86%	48791	88%	**99	93%
Ramshot Wild Boar	<<locked>>	87%	49719	90%	**88	96%
Ramshot X-Terminator	<<locked>>	84%	48965	89%	**09	96%
ReloadSwiss RS 14	<<locked>>	95%	32227	58%	**61	100%
ReloadSwiss RS 40 👍	<<locked>>	84%	49603	90%	**68	99%
[ReloadSwiss RS 50]*	<<locked>>	92%	48892	88%	**96	91%
ReloadSwiss RS 52	<<locked>>	93%	49559	90%	**40	98%
ReloadSwiss RS 60	<<locked>>	96%	45788	83%	**84	96%
Rottweil R 901	<<locked>>	86%	48660	88%	**25	99%
Rottweil R 902	<<locked>>	91%	49066	89%	**38	97%
Rottweil R 903	<<locked>>	96%	49110	89%	**68	97%
SNPE Vectan SP 11	<<locked>>	95%	48936	89%	**04	96%
[SNPE Vectan SP 7]*	<<locked>>	88%	48921	89%	**12	93%
SNPE Vectan SP 9	<<locked>>	89%	49574	90%	**71	96%
SNPE Vectan Tubal 3000	<<locked>>	88%	49705	90%	**83	99%
SNPE Vectan Tubal 5000	<<locked>>	94%	49661	90%	**79	100%
[Shooters World Long Rifle]*	<<locked>>	96%	45527	82%	**37	91%
Shooters World Match Rifle	<<locked>>	89%	49095	89%	**68	99%
Shooters World Precision	<<locked>>	93%	49632	90%	**61	98%
Somchem S321	<<locked>>	84%	49429	89%	**61	98%
Somchem S335	<<locked>>	89%	49472	90%	**99	100%
Somchem S341	<<locked>>	88%	49081	89%	**35	96%
Somchem S355	<<locked>>	96%	49168	89%	**75	97%
[Somchem S365]*	<<locked>>	97%	36593	66%	**22	94%
Vihtavuori N130	<<locked>>	85%	49400	89%	**83	100%
Vihtavuori N133	<<locked>>	91%	49385	89%	**99	100%
Vihtavuori N135	<<locked>>	96%	47224	85%	**06	100%
Vihtavuori N140	<<locked>>	91%	49284	89%	**35	99%
Vihtavuori N150	<<locked>>	97%	42873	78%	**88	96%
[Vihtavuori N160]*	<<locked>>	96%	45194	82%	**63	93%
Vihtavuori N530	<<locked>>	85%	49313	89%	**71	97%
Vihtavuori N540	<<locked>>	91%	48965	89%	**45	99%
[Vihtavuori N550]*	<<locked>>	97%	45890	83%	**32	93%
Winchester 6.5 StaBALL	<<locked>>	97%	44831	81%	**07	96%
Winchester 748	<<locked>>	85%	49385	89%	**07	98%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	81%	38435	70%	**09	92%
[ADI AR 2208]*	<<locked>>	84%	36187	65%	**07	90%
Accurate 2015	<<locked>>	81%	43410	79%	**01	100%
[Accurate 2200]*	<<locked>>	81%	40712	74%	**15	91%
Accurate 2495	<<locked>>	81%	37942	69%	**32	99%
Accurate 2520	<<locked>>	81%	39218	71%	**38	96%
Accurate 4064	<<locked>>	81%	31894	58%	**28	95%
Alliant AR-Comp	<<locked>>	81%	39247	71%	**88	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	81%	31604	57%	**05	90%
[Alliant Reloder-15]*	<<locked>>	82%	35781	65%	**40	90%
[Alliant Reloder-17]*	<<locked>>	88%	35288	64%	**60	90%
[Baschieri & Pellagri 107]*	<<locked>>	81%	37594	68%	**69	90%
[Hodgdon BL-C2]*	<<locked>>	81%	39291	71%	**45	94%
Hodgdon Benchmark	<<locked>>	81%	42743	77%	**65	96%
[Hodgdon CFE223]*	<<locked>>	85%	38043	69%	**12	90%
Hodgdon H322	<<locked>>	81%	42380	77%	**27	99%
[Hodgdon H380]*	<<locked>>	87%	39871	72%	**28	90%
[Hodgdon Hybrid 100V]*	<<locked>>	94%	34403	62%	**74	90%
[Hodgdon LVR]*	<<locked>>	94%	40669	74%	**88	90%
[Hodgdon VARGET]*	<<locked>>	84%	36187	65%	**07	90%
Hodgdon TrailBoss	<<locked>>	81%	25788	47%	**31	100%
IMR 3031	<<locked>>	81%	33794	61%	**40	97%
[IMR 4064]*	<<locked>>	84%	35578	64%	**91	90%
[IMR 4895]*	<<locked>>	81%	35027	63%	**30	91%
IMR 8208 XBR	<<locked>>	81%	40466	73%	**38	95%
Lovex D073.6	<<locked>>	81%	36898	67%	**76	96%
[Lovex S060]*	<<locked>>	81%	39189	71%	**50	93%
[Lovex S062]*	<<locked>>	81%	33808	61%	**55	92%
[Lovex S065]*	<<locked>>	94%	41930	76%	**45	90%
[Norma 201]*	<<locked>>	81%	37463	68%	**46	94%
Norma 202	<<locked>>	81%	37681	68%	**86	97%
[Norma 203B]*	<<locked>>	82%	34389	62%	**04	90%
[Ramshot Big Game]*	<<locked>>	83%	35636	64%	**37	90%
[Ramshot TAC]*	<<locked>>	82%	41684	75%	**28	90%
[Ramshot Wild Boar]*	<<locked>>	81%	39450	71%	**35	93%
[Ramshot X-Terminator]*	<<locked>>	81%	44251	80%	**97	94%
ReloadSwiss RS 14	<<locked>>	81%	25686	46%	**74	100%
ReloadSwiss RS 40	<<locked>>	81%	45803	83%	**76	98%
[ReloadSwiss RS 50]*	<<locked>>	90%	45092	82%	**17	90%
[ReloadSwiss RS 52]*	<<locked>>	81%	32068	58%	**61	91%
[ReloadSwiss RS 60]*	<<locked>>	88%	34287	62%	**37	90%
Rottweil R 901	<<locked>>	81%	41133	74%	**55	97%
[Rottweil R 902]*	<<locked>>	81%	35882	65%	**01	93%
[Rottweil R 903]*	<<locked>>	84%	32329	59%	**32	90%
[SNPE Vectan SP 11]*	<<locked>>	85%	35215	64%	**40	90%
[SNPE Vectan SP 7]*	<<locked>>	82%	40422	73%	**06	90%
[SNPE Vectan SP 9]*	<<locked>>	81%	37014	67%	**46	92%
SNPE Vectan Tubal 3000	<<locked>>	81%	39378	71%	**50	97%
SNPE Vectan Tubal 5000	<<locked>>	81%	32140	58%	**50	96%
[Shooters World Long Rifle]*	<<locked>>	94%	41930	76%	**45	90%
Shooters World Match Rifle	<<locked>>	81%	36898	67%	**76	96%
[Shooters World Precision]*	<<locked>>	81%	33808	61%	**55	92%
Somchem S321	<<locked>>	81%	43642	79%	**24	96%
Somchem S335	<<locked>>	81%	38595	70%	**40	98%
[Somchem S341]*	<<locked>>	81%	38029	69%	**63	92%
[Somchem S355]*	<<locked>>	83%	32721	59%	**25	90%
[Somchem S365]*	<<locked>>	92%	31473	57%	**48	90%
Vihtavuori N130	<<locked>>	81%	43584	79%	**71	100%
Vihtavuori N133	<<locked>>	81%	36448	66%	**94	99%
Vihtavuori N135	<<locked>>	81%	28805	52%	**14	96%
Vihtavuori N140	<<locked>>	81%	35085	63%	**87	96%
[Vihtavuori N150]*	<<locked>>	85%	28921	52%	**91	90%
[Vihtavuori N160]*	<<locked>>	92%	38856	70%	**96	90%
Vihtavuori N530	<<locked>>	81%	42409	77%	**07	96%
Vihtavuori N540	<<locked>>	81%	34998	63%	**94	96%
[Vihtavuori N550]*	<<locked>>	92%	38856	70%	**51	90%
[Winchester 6.5 StaBALL]*	<<locked>>	88%	33779	61%	**96	90%
Winchester 748	<<locked>>	81%	42670	77%	**60	97%

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.