Load data for .243 Ackley Improved + .243 | 75gr | Sierra HP Varminter

Recommended Powder(s): Alliant Reloder-17, IMR 4895, ReloadSwiss RS 60, Rottweil R 903, Somchem S355

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 75gr \| Sierra HP Varminter
Manufacturer SKU:	1510
Bullet Weight:	75gr \| 4.9g
Bullet Diameter:	0.243" \| 6.17mm
Bullet Length:	0.815" \| 20.7mm
Caliber:	.243 Ackley Improved load data
Case Length (l3):	2.045" \| 51.9mm
Cartridge Length (C.O.L.):	2.458" \| 62.4mm
Seated Depth:	0.402" \| 10.2mm
Shank Seated Depth:	0.402" \| 10.2mm
Case Capacity:	57.0 Grains of Water \| 3.70 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	55259 psi \| 3810 bar
LID:	LID_B5768_C1011
Last updated:	2025-02-02

Load data for 128 loads in caliber .243 Ackley Improved with .243 | 75gr | Sierra HP Varminter bullet and 64 powders such as Alliant Reloder-17, IMR 4895, ReloadSwiss RS 60, Rottweil R 903, 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".

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Max FR*
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Barrel Length (cm)
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 2208	<<locked>>	88%	49139	89%	**55	98%
[Accurate 2700]*	<<locked>>	88%	48747	88%	**59	94%
[Accurate 3100]*	<<locked>>	97%	37782	68%	**28	92%
Accurate 4064	<<locked>>	87%	49705	90%	**74	100%
Accurate 4350	<<locked>>	95%	49284	89%	**20	98%
Alliant Reloder- TS 15.5	<<locked>>	88%	49676	90%	**87	99%
Alliant Reloder-15	<<locked>>	85%	49037	89%	**81	98%
Alliant Reloder-16	<<locked>>	96%	49197	89%	**63	98%
Alliant Reloder-17 👍	<<locked>>	91%	48733	88%	**83	99%
Alliant Reloder-23	<<locked>>	97%	36289	66%	**58	96%
[Alliant Reloder-26]*	<<locked>>	96%	39755	72%	**96	94%
Hodgdon CFE223	<<locked>>	86%	49487	90%	**17	98%
Hodgdon H380	<<locked>>	87%	49719	90%	**78	97%
Hodgdon H414	<<locked>>	90%	48805	88%	**04	95%
[Hodgdon H4350]*	<<locked>>	97%	49008	89%	**41	94%
Hodgdon Hybrid 100V	<<locked>>	97%	47210	85%	**48	99%
Hodgdon LVR	<<locked>>	93%	48878	88%	**07	97%
[Hodgdon Superperformance]*	<<locked>>	93%	48559	88%	**14	94%
Hodgdon VARGET	<<locked>>	88%	49559	90%	**61	98%
Hodgdon TrailBoss	<<locked>>	96%	33489	61%	**06	100%
IMR 3031	<<locked>>	85%	49313	89%	**87	100%
IMR 4064	<<locked>>	88%	49153	89%	**45	98%
IMR 4166 Enduron	<<locked>>	89%	49255	89%	**09	95%
[IMR 4350]*	<<locked>>	95%	49458	90%	**58	94%
IMR 4451 Enduron	<<locked>>	90%	48979	89%	**32	95%
IMR 4831	<<locked>>	97%	44454	80%	**02	97%
IMR 4895 👍	<<locked>>	85%	49110	89%	**04	99%
Lovex S062	<<locked>>	86%	49110	89%	**45	99%
Lovex S065	<<locked>>	92%	48776	88%	**35	96%
Lovex S070	<<locked>>	94%	48849	88%	**55	95%
Norma 203B	<<locked>>	86%	49284	89%	**87	99%
[Norma 204]*	<<locked>>	95%	49501	90%	**94	93%
Norma URP	<<locked>>	95%	48776	88%	**07	98%
Ramshot Big Game	<<locked>>	86%	49327	89%	**97	99%
Ramshot Hunter	<<locked>>	96%	48965	89%	**14	96%
ReloadSwiss RS 14	<<locked>>	96%	33953	61%	**56	100%
ReloadSwiss RS 50	<<locked>>	87%	49617	90%	**48	96%
ReloadSwiss RS 52	<<locked>>	86%	49342	89%	**17	100%
ReloadSwiss RS 60 👍	<<locked>>	92%	49255	89%	**06	100%
ReloadSwiss RS 62	<<locked>>	95%	49008	89%	**30	97%
ReloadSwiss RS 70	<<locked>>	95%	48950	89%	**60	97%
Rottweil R 902	<<locked>>	85%	49298	89%	**35	99%
Rottweil R 903 👍	<<locked>>	90%	49676	90%	**81	99%
[Rottweil R 907]*	<<locked>>	91%	49124	89%	**25	94%
SNPE Vectan SP 11	<<locked>>	88%	48573	88%	**97	99%
SNPE Vectan SP 9	<<locked>>	83%	49081	89%	**58	99%
SNPE Vectan Tubal 5000	<<locked>>	88%	49371	89%	**63	100%
SNPE Vectan Tubal 7000	<<locked>>	93%	49429	89%	**82	95%
Shooters World Long Rifle	<<locked>>	92%	48776	88%	**35	96%
Shooters World Precision	<<locked>>	86%	49110	89%	**45	99%
Somchem S355 👍	<<locked>>	90%	49676	90%	**78	99%
Somchem S365	<<locked>>	97%	46021	83%	**04	100%
[Somchem S385]*	<<locked>>	97%	43526	79%	**59	92%
Vihtavuori N133	<<locked>>	85%	49429	89%	**56	100%
Vihtavuori N135	<<locked>>	91%	49371	89%	**15	100%
Vihtavuori N140	<<locked>>	85%	48878	88%	**02	100%
Vihtavuori N150	<<locked>>	95%	49313	89%	**35	100%
Vihtavuori N160	<<locked>>	92%	48733	88%	**68	98%
Vihtavuori N540	<<locked>>	86%	49559	90%	**51	100%
Vihtavuori N550	<<locked>>	92%	49429	89%	**30	98%
Vihtavuori N555	<<locked>>	97%	39030	71%	**36	96%
Winchester 6.5 StaBALL	<<locked>>	93%	48791	88%	**35	99%
Winchester 760	<<locked>>	90%	48805	88%	**04	95%
[Winchester StaBALL HD]*	<<locked>>	96%	31952	58%	**82	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	39813	72%	**35	96%
[Accurate 2700]*	<<locked>>	82%	39001	71%	**46	90%
[Accurate 3100]*	<<locked>>	94%	33678	61%	**17	90%
Accurate 4064	<<locked>>	81%	40857	74%	**87	100%
[Accurate 4350]*	<<locked>>	81%	29878	54%	**38	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	39363	71%	**61	97%
Alliant Reloder-15	<<locked>>	81%	42177	76%	**33	97%
[Alliant Reloder-16]*	<<locked>>	82%	31024	56%	**67	90%
Alliant Reloder-17	<<locked>>	81%	33968	61%	**02	95%
[Alliant Reloder-23]*	<<locked>>	88%	27673	50%	**59	90%
[Alliant Reloder-26]*	<<locked>>	91%	32866	59%	**86	90%
Hodgdon CFE223	<<locked>>	81%	40915	74%	**33	96%
Hodgdon H380	<<locked>>	81%	40219	73%	**71	95%
[Hodgdon H414]*	<<locked>>	82%	36854	67%	**28	90%
[Hodgdon H4350]*	<<locked>>	90%	39102	71%	**12	90%
[Hodgdon Hybrid 100V]*	<<locked>>	81%	28050	51%	**49	92%
[Hodgdon LVR]*	<<locked>>	81%	33185	60%	**23	91%
[Hodgdon Superperformance]*	<<locked>>	87%	39378	71%	**87	90%
Hodgdon VARGET	<<locked>>	81%	39436	71%	**25	96%
Hodgdon TrailBoss	<<locked>>	81%	26672	48%	**32	100%
IMR 3031	<<locked>>	81%	43163	78%	**66	100%
IMR 4064	<<locked>>	81%	38827	70%	**15	96%
[IMR 4166 Enduron]*	<<locked>>	81%	38537	70%	**59	91%
[IMR 4350]*	<<locked>>	88%	38653	70%	**09	90%
[IMR 4451 Enduron]*	<<locked>>	82%	37521	68%	**56	90%
[IMR 4831]*	<<locked>>	84%	29254	53%	**02	90%
IMR 4895	<<locked>>	81%	43279	78%	**79	98%
Lovex S062	<<locked>>	81%	41437	75%	**87	98%
[Lovex S065]*	<<locked>>	81%	34360	62%	**77	91%
[Lovex S070]*	<<locked>>	84%	35824	65%	**40	90%
Norma 203B	<<locked>>	81%	41698	75%	**23	97%
[Norma 204]*	<<locked>>	91%	43656	79%	**63	90%
[Norma URP]*	<<locked>>	81%	30298	55%	**41	90%
Ramshot Big Game	<<locked>>	81%	41611	75%	**33	97%
[Ramshot Hunter]*	<<locked>>	86%	35128	64%	**72	90%
ReloadSwiss RS 14	<<locked>>	81%	27108	49%	**82	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	40422	73%	**41	93%
ReloadSwiss RS 52	<<locked>>	81%	40524	73%	**30	99%
ReloadSwiss RS 60	<<locked>>	81%	33156	60%	**82	95%
[ReloadSwiss RS 62]*	<<locked>>	82%	31140	56%	**90	90%
[ReloadSwiss RS 70]*	<<locked>>	84%	33663	61%	**56	90%
Rottweil R 902	<<locked>>	81%	43511	79%	**17	99%
Rottweil R 903	<<locked>>	81%	36666	66%	**89	96%
[Rottweil R 907]*	<<locked>>	83%	38363	69%	**82	90%
SNPE Vectan SP 11	<<locked>>	81%	37797	68%	**51	96%
SNPE Vectan SP 9	<<locked>>	81%	45194	82%	**86	98%
SNPE Vectan Tubal 5000	<<locked>>	81%	38972	71%	**59	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	83%	35824	65%	**81	90%
[Shooters World Long Rifle]*	<<locked>>	81%	34360	62%	**77	91%
Shooters World Precision	<<locked>>	81%	41437	75%	**87	98%
Somchem S355	<<locked>>	81%	37753	68%	**05	96%
[Somchem S365]*	<<locked>>	81%	27340	49%	**72	93%
[Somchem S385]*	<<locked>>	94%	38943	70%	**45	90%
Vihtavuori N133	<<locked>>	81%	44454	80%	**71	100%
Vihtavuori N135	<<locked>>	81%	36129	65%	**49	100%
Vihtavuori N140	<<locked>>	81%	42975	78%	**91	100%
Vihtavuori N150	<<locked>>	81%	32024	58%	**31	96%
[Vihtavuori N160]*	<<locked>>	81%	33083	60%	**94	92%
Vihtavuori N540	<<locked>>	81%	42902	78%	**10	100%
[Vihtavuori N550]*	<<locked>>	81%	33736	61%	**36	92%
[Vihtavuori N555]*	<<locked>>	88%	28790	52%	**35	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	31836	58%	**22	94%
[Winchester 760]*	<<locked>>	82%	36854	67%	**28	90%
[Winchester StaBALL HD]*	<<locked>>	93%	28790	52%	**54	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.