Load data for .243 Ackley Improved + .243 | 70gr | Sierra Blitzking

Recommended Powder(s): Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Somchem S355

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 70gr \| Sierra Blitzking
Manufacturer SKU:	1507
Bullet Weight:	70gr \| 4.5g
Bullet Diameter:	0.243" \| 6.17mm
Bullet Length:	0.898" \| 22.8mm
Caliber:	.243 Ackley Improved load data
Case Length (l3):	2.045" \| 51.9mm
Cartridge Length (C.O.L.):	2.458" \| 62.4mm
Seated Depth:	0.485" \| 12.3mm
Shank Seated Depth:	0.355" \| 9.0mm
Case Capacity:	57.0 Grains of Water \| 3.70 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	55259 psi \| 3810 bar
LID:	LID_B5766_C1011
Last updated:	2025-02-02
Recommended Twist Rate:	1:11 - 1:9

Load data for 144 loads in caliber .243 Ackley Improved with .243 | 70gr | Sierra Blitzking bullet and 72 powders such as Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Somchem S355. 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. 40.6 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 2206H	<<locked>>	84%	48979	89%	**56	98%
ADI AR 2208	<<locked>>	90%	49400	89%	**46	98%
Accurate 2495	<<locked>>	84%	49588	90%	**50	100%
[Accurate 2700]*	<<locked>>	90%	49226	89%	**51	93%
Accurate 4064	<<locked>>	89%	49516	90%	**56	100%
Accurate 4350	<<locked>>	97%	48138	87%	**83	97%
Alliant Reloder- TS 15.5 👍	<<locked>>	90%	48776	88%	**66	99%
Alliant Reloder-15	<<locked>>	87%	49240	89%	**76	98%
Alliant Reloder-16	<<locked>>	96%	46978	85%	**86	97%
Alliant Reloder-17 👍	<<locked>>	93%	48805	88%	**55	99%
[Alliant Reloder-23]*	<<locked>>	96%	33344	60%	**25	93%
Baschieri & Pellagri 107	<<locked>>	85%	49284	89%	**69	97%
Hodgdon CFE223	<<locked>>	88%	49472	90%	**06	97%
Hodgdon H380	<<locked>>	89%	48979	89%	**53	96%
[Hodgdon H414]*	<<locked>>	92%	49240	89%	**96	94%
[Hodgdon H4350]*	<<locked>>	96%	45382	82%	**41	92%
Hodgdon Hybrid 100V	<<locked>>	96%	42975	78%	**51	97%
Hodgdon LVR	<<locked>>	95%	48921	89%	**92	96%
[Hodgdon Superperformance]*	<<locked>>	95%	49458	90%	**06	93%
Hodgdon VARGET	<<locked>>	90%	48820	88%	**23	97%
Hodgdon TrailBoss	<<locked>>	96%	33257	60%	**65	100%
IMR 3031	<<locked>>	87%	49211	89%	**89	100%
IMR 4064	<<locked>>	91%	49443	89%	**37	98%
[IMR 4166 Enduron]*	<<locked>>	90%	48820	88%	**81	94%
[IMR 4350]*	<<locked>>	97%	48660	88%	**10	93%
[IMR 4451 Enduron]*	<<locked>>	92%	49429	89%	**20	94%
IMR 4831	<<locked>>	96%	40567	73%	**89	95%
IMR 4895	<<locked>>	87%	49284	89%	**86	98%
Lovex D073.6	<<locked>>	85%	49298	89%	**53	100%
Lovex S060	<<locked>>	84%	49066	89%	**91	98%
Lovex S062	<<locked>>	88%	49443	89%	**46	99%
Lovex S065	<<locked>>	94%	48979	89%	**14	95%
[Lovex S070]*	<<locked>>	96%	49168	89%	**37	94%
Norma 201	<<locked>>	85%	49095	89%	**27	99%
Norma 202	<<locked>>	85%	49327	89%	**46	100%
Norma 203B	<<locked>>	88%	49458	90%	**83	98%
Norma URP	<<locked>>	97%	47747	86%	**79	97%
Ramshot Big Game	<<locked>>	88%	48892	88%	**79	98%
[Ramshot Hunter]*	<<locked>>	97%	46949	85%	**56	94%
Ramshot Wild Boar	<<locked>>	83%	49545	90%	**69	98%
ReloadSwiss RS 14	<<locked>>	96%	33678	61%	**18	100%
ReloadSwiss RS 50	<<locked>>	88%	48733	88%	**17	95%
ReloadSwiss RS 52 👍	<<locked>>	88%	49182	89%	**09	99%
ReloadSwiss RS 60 👍	<<locked>>	94%	49385	89%	**91	99%
ReloadSwiss RS 62	<<locked>>	96%	47863	87%	**02	96%
ReloadSwiss RS 70	<<locked>>	97%	48486	88%	**28	96%
Rottweil R 902	<<locked>>	87%	49647	90%	**27	99%
Rottweil R 903	<<locked>>	92%	49632	90%	**79	99%
[Rottweil R 907]*	<<locked>>	93%	49588	90%	**17	93%
SNPE Vectan SP 11	<<locked>>	91%	49734	90%	**06	98%
SNPE Vectan SP 7	<<locked>>	84%	49342	89%	**23	96%
SNPE Vectan SP 9	<<locked>>	85%	49414	89%	**53	98%
SNPE Vectan Tubal 3000	<<locked>>	84%	49313	89%	**58	100%
SNPE Vectan Tubal 5000	<<locked>>	90%	48718	88%	**45	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	95%	49588	90%	**58	94%
Shooters World Long Rifle	<<locked>>	94%	48979	89%	**14	95%
Shooters World Match Rifle	<<locked>>	85%	49298	89%	**53	100%
Shooters World Precision	<<locked>>	88%	49443	89%	**46	99%
Somchem S335	<<locked>>	84%	49081	89%	**61	100%
Somchem S341	<<locked>>	84%	49066	89%	**27	98%
Somchem S355 👍	<<locked>>	91%	48689	88%	**53	99%
Somchem S365	<<locked>>	97%	43004	78%	**17	99%
Vihtavuori N133	<<locked>>	86%	48689	88%	**45	100%
Vihtavuori N135	<<locked>>	93%	48791	88%	**07	100%
Vihtavuori N140	<<locked>>	87%	49095	89%	**04	100%
Vihtavuori N150	<<locked>>	97%	49603	90%	**33	99%
Vihtavuori N160	<<locked>>	94%	48820	88%	**56	97%
Vihtavuori N540	<<locked>>	87%	48776	88%	**20	100%
Vihtavuori N550	<<locked>>	94%	49516	90%	**06	97%
[Vihtavuori N555]*	<<locked>>	97%	36172	65%	**46	94%
Winchester 6.5 StaBALL	<<locked>>	95%	49095	89%	**23	99%
[Winchester 760]*	<<locked>>	92%	49240	89%	**96	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	44106	80%	**55	97%
[ADI AR 2208]*	<<locked>>	81%	37463	68%	**61	94%
Accurate 2495	<<locked>>	81%	45136	82%	**64	100%
[Accurate 2700]*	<<locked>>	85%	41684	75%	**81	90%
Accurate 4064	<<locked>>	81%	37971	69%	**10	99%
[Accurate 4350]*	<<locked>>	85%	31662	57%	**72	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	36796	67%	**84	96%
Alliant Reloder-15	<<locked>>	81%	39682	72%	**63	95%
[Alliant Reloder-16]*	<<locked>>	85%	32721	59%	**99	90%
[Alliant Reloder-17]*	<<locked>>	81%	31836	58%	**95	92%
[Alliant Reloder-23]*	<<locked>>	92%	29399	53%	**97	90%
Baschieri & Pellagri 107	<<locked>>	81%	43308	78%	**41	96%
[Hodgdon CFE223]*	<<locked>>	81%	38392	69%	**43	94%
[Hodgdon H380]*	<<locked>>	81%	37681	68%	**77	93%
[Hodgdon H414]*	<<locked>>	86%	39755	72%	**79	90%
[Hodgdon H4350]*	<<locked>>	94%	41669	75%	**50	90%
[Hodgdon Hybrid 100V]*	<<locked>>	84%	28543	52%	**35	91%
[Hodgdon LVR]*	<<locked>>	84%	33808	61%	**05	90%
[Hodgdon Superperformance]*	<<locked>>	91%	42627	77%	**48	90%
[Hodgdon VARGET]*	<<locked>>	81%	37217	67%	**54	94%
Hodgdon TrailBoss	<<locked>>	81%	26368	48%	**88	100%
IMR 3031	<<locked>>	81%	40118	73%	**99	100%
[IMR 4064]*	<<locked>>	81%	36550	66%	**28	94%
[IMR 4166 Enduron]*	<<locked>>	84%	39784	72%	**61	90%
[IMR 4350]*	<<locked>>	92%	41075	74%	**46	90%
[IMR 4451 Enduron]*	<<locked>>	85%	39421	71%	**87	90%
[IMR 4831]*	<<locked>>	88%	31024	56%	**30	90%
IMR 4895	<<locked>>	81%	40567	73%	**92	96%
Lovex D073.6	<<locked>>	81%	43134	78%	**22	99%
Lovex S060	<<locked>>	81%	44135	80%	**86	97%
Lovex S062	<<locked>>	81%	38856	70%	**00	97%
[Lovex S065]*	<<locked>>	84%	34940	63%	**76	90%
[Lovex S070]*	<<locked>>	89%	38885	70%	**97	90%
Norma 201	<<locked>>	81%	43337	78%	**09	98%
Norma 202	<<locked>>	81%	43410	79%	**15	100%
Norma 203B	<<locked>>	81%	39059	71%	**50	96%
[Norma URP]*	<<locked>>	85%	32155	58%	**79	90%
Ramshot Big Game	<<locked>>	81%	38609	70%	**50	95%
[Ramshot Hunter]*	<<locked>>	90%	37289	67%	**17	90%
Ramshot Wild Boar	<<locked>>	81%	45643	83%	**84	97%
ReloadSwiss RS 14	<<locked>>	81%	26760	48%	**37	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	38043	69%	**64	91%
ReloadSwiss RS 52	<<locked>>	81%	37710	68%	**53	97%
[ReloadSwiss RS 60]*	<<locked>>	81%	31125	56%	**82	93%
[ReloadSwiss RS 62]*	<<locked>>	86%	32953	60%	**22	90%
[ReloadSwiss RS 70]*	<<locked>>	88%	36085	65%	**00	90%
Rottweil R 902	<<locked>>	81%	40901	74%	**33	97%
[Rottweil R 903]*	<<locked>>	81%	34084	62%	**02	94%
[Rottweil R 907]*	<<locked>>	87%	40828	74%	**23	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	35360	64%	**58	94%
SNPE Vectan SP 7	<<locked>>	81%	44425	80%	**22	95%
SNPE Vectan SP 9	<<locked>>	81%	42424	77%	**02	97%
SNPE Vectan Tubal 3000	<<locked>>	81%	44353	80%	**59	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	36724	66%	**86	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	88%	39044	71%	**38	90%
[Shooters World Long Rifle]*	<<locked>>	84%	34940	63%	**76	90%
Shooters World Match Rifle	<<locked>>	81%	43134	78%	**22	99%
Shooters World Precision	<<locked>>	81%	38856	70%	**00	97%
Somchem S335	<<locked>>	81%	44425	80%	**73	100%
Somchem S341	<<locked>>	81%	44193	80%	**25	97%
Somchem S355	<<locked>>	81%	35273	64%	**25	95%
[Somchem S365]*	<<locked>>	82%	25962	47%	**92	90%
Vihtavuori N133	<<locked>>	81%	41829	76%	**04	100%
Vihtavuori N135	<<locked>>	81%	34069	62%	**79	99%
Vihtavuori N140	<<locked>>	81%	40335	73%	**30	99%
[Vihtavuori N150]*	<<locked>>	81%	29907	54%	**48	94%
[Vihtavuori N160]*	<<locked>>	82%	32111	58%	**36	90%
Vihtavuori N540	<<locked>>	81%	40321	73%	**50	99%
[Vihtavuori N550]*	<<locked>>	82%	32198	58%	**76	90%
[Vihtavuori N555]*	<<locked>>	92%	30400	55%	**63	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	29936	54%	**31	92%
[Winchester 760]*	<<locked>>	86%	39755	72%	**79	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.