Load data for .243 Ackley Improved + .243 | 70gr | Speer MHP

Recommended Powder(s): Accurate 4064, Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 70gr \| Speer MHP
Manufacturer SKU:	1207
Bullet Weight:	70gr \| 4.5g
Bullet Diameter:	0.243" \| 6.17mm
Bullet Length:	0.810" \| 20.6mm
Caliber:	.243 Ackley Improved load data
Case Length (l3):	2.045" \| 51.9mm
Cartridge Length (C.O.L.):	2.458" \| 62.4mm
Seated Depth:	0.397" \| 10.1mm
Shank Seated Depth:	0.397" \| 10.1mm
Case Capacity:	57.0 Grains of Water \| 3.70 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	55259 psi \| 3810 bar
LID:	LID_B6070_C1011
Last updated:	2025-01-01

Load data for 146 loads in caliber .243 Ackley Improved with .243 | 70gr | Speer MHP bullet and 73 powders such as Accurate 4064, Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60. 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. 40.2 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>>	85%	49501	90%	**83	98%
ADI AR 2208	<<locked>>	90%	48979	89%	**40	98%
Accurate 2495	<<locked>>	84%	48559	88%	**40	100%
[Accurate 2700]*	<<locked>>	91%	49545	90%	**55	93%
Accurate 4064 👍	<<locked>>	90%	49719	90%	**73	100%
Accurate 4350	<<locked>>	97%	48385	88%	**92	97%
Alliant Reloder- TS 15.5 👍	<<locked>>	90%	49269	89%	**73	99%
Alliant Reloder-15	<<locked>>	88%	49661	90%	**99	98%
Alliant Reloder-16	<<locked>>	97%	47311	86%	**06	97%
Alliant Reloder-17 👍	<<locked>>	94%	49705	90%	**94	99%
[Alliant Reloder-23]*	<<locked>>	97%	33228	60%	**31	93%
Baschieri & Pellagri 107	<<locked>>	85%	49327	89%	**66	97%
Hodgdon BL-C2	<<locked>>	83%	49501	90%	**86	99%
Hodgdon CFE223	<<locked>>	88%	48994	89%	**06	97%
Hodgdon H380	<<locked>>	89%	49298	89%	**56	96%
[Hodgdon H414]*	<<locked>>	93%	49139	89%	**02	94%
[Hodgdon H4350]*	<<locked>>	97%	45701	83%	**58	92%
Hodgdon Hybrid 100V	<<locked>>	97%	43540	79%	**58	97%
Hodgdon LVR	<<locked>>	95%	49327	89%	**09	96%
[Hodgdon Superperformance]*	<<locked>>	95%	49255	89%	**09	93%
Hodgdon VARGET	<<locked>>	90%	49545	90%	**50	98%
Hodgdon TrailBoss	<<locked>>	96%	32967	60%	**69	100%
IMR 3031	<<locked>>	87%	48689	88%	**83	100%
IMR 4064	<<locked>>	90%	48892	88%	**30	98%
[IMR 4166 Enduron]*	<<locked>>	90%	48820	88%	**84	94%
[IMR 4350]*	<<locked>>	96%	48008	87%	**07	93%
[IMR 4451 Enduron]*	<<locked>>	92%	48892	88%	**10	94%
IMR 4831	<<locked>>	97%	40306	73%	**92	95%
IMR 4895	<<locked>>	87%	48733	88%	**89	98%
Lovex D073.6	<<locked>>	85%	48675	88%	**56	100%
Lovex S060	<<locked>>	85%	49588	90%	**04	98%
Lovex S062	<<locked>>	89%	49617	90%	**50	99%
Lovex S065	<<locked>>	95%	49400	89%	**33	96%
[Lovex S070]*	<<locked>>	96%	48776	88%	**37	94%
Norma 201	<<locked>>	86%	49676	90%	**40	99%
Norma 202	<<locked>>	85%	48863	88%	**40	100%
Norma 203B	<<locked>>	88%	48863	88%	**69	98%
Norma URP	<<locked>>	97%	47718	86%	**86	97%
Ramshot Big Game	<<locked>>	88%	48762	88%	**86	98%
[Ramshot Hunter]*	<<locked>>	97%	46775	85%	**60	94%
Ramshot Wild Boar	<<locked>>	83%	49661	90%	**73	98%
ReloadSwiss RS 14	<<locked>>	96%	33286	60%	**15	100%
ReloadSwiss RS 50	<<locked>>	89%	49734	90%	**33	95%
ReloadSwiss RS 52 👍	<<locked>>	89%	49298	89%	**22	100%
ReloadSwiss RS 60 👍	<<locked>>	95%	49226	89%	**97	100%
ReloadSwiss RS 62	<<locked>>	97%	48109	87%	**09	97%
ReloadSwiss RS 70	<<locked>>	97%	48341	87%	**32	96%
Rottweil R 902	<<locked>>	87%	49081	89%	**17	99%
Rottweil R 903	<<locked>>	92%	49371	89%	**69	99%
[Rottweil R 907]*	<<locked>>	93%	49255	89%	**23	93%
SNPE Vectan SP 11	<<locked>>	91%	49603	90%	**15	98%
SNPE Vectan SP 7	<<locked>>	84%	49255	89%	**33	96%
SNPE Vectan SP 9	<<locked>>	85%	49226	89%	**63	98%
SNPE Vectan Tubal 3000	<<locked>>	85%	49588	90%	**68	100%
SNPE Vectan Tubal 5000	<<locked>>	90%	48936	89%	**51	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	94%	48965	89%	**58	94%
Shooters World Long Rifle	<<locked>>	95%	49400	89%	**33	96%
Shooters World Match Rifle	<<locked>>	85%	48675	88%	**56	100%
Shooters World Precision	<<locked>>	89%	49617	90%	**50	99%
Somchem S335	<<locked>>	85%	49647	90%	**74	100%
Somchem S341	<<locked>>	84%	49139	89%	**27	98%
Somchem S355	<<locked>>	92%	49110	89%	**60	99%
Somchem S365	<<locked>>	96%	42221	76%	**07	99%
Vihtavuori N133	<<locked>>	87%	49400	89%	**61	100%
Vihtavuori N135	<<locked>>	93%	49400	89%	**20	100%
Vihtavuori N140	<<locked>>	87%	49617	90%	**23	100%
Vihtavuori N150	<<locked>>	97%	48892	88%	**20	99%
Vihtavuori N160	<<locked>>	94%	48747	88%	**50	97%
Vihtavuori N540	<<locked>>	87%	49211	89%	**40	100%
Vihtavuori N550	<<locked>>	95%	49705	90%	**15	97%
[Vihtavuori N555]*	<<locked>>	97%	35375	64%	**30	93%
Winchester 6.5 StaBALL	<<locked>>	95%	48805	88%	**23	99%
[Winchester 760]*	<<locked>>	93%	49139	89%	**02	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	43584	79%	**48	97%
[ADI AR 2208]*	<<locked>>	81%	37173	67%	**61	94%
Accurate 2495	<<locked>>	81%	44251	80%	**58	100%
[Accurate 2700]*	<<locked>>	86%	41959	76%	**91	90%
Accurate 4064	<<locked>>	81%	37246	67%	**91	99%
[Accurate 4350]*	<<locked>>	85%	31531	57%	**66	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	36405	66%	**77	96%
Alliant Reloder-15	<<locked>>	81%	39189	71%	**53	95%
[Alliant Reloder-16]*	<<locked>>	85%	32256	58%	**86	90%
[Alliant Reloder-17]*	<<locked>>	81%	31647	57%	**02	92%
[Alliant Reloder-23]*	<<locked>>	93%	29370	53%	**07	90%
Baschieri & Pellagri 107	<<locked>>	81%	43323	78%	**41	96%
Hodgdon BL-C2	<<locked>>	81%	45440	82%	**07	99%
[Hodgdon CFE223]*	<<locked>>	81%	37884	69%	**40	94%
[Hodgdon H380]*	<<locked>>	81%	37144	67%	**77	92%
[Hodgdon H414]*	<<locked>>	86%	38783	70%	**63	90%
[Hodgdon H4350]*	<<locked>>	93%	41191	75%	**53	90%
[Hodgdon Hybrid 100V]*	<<locked>>	84%	27934	51%	**15	90%
[Hodgdon LVR]*	<<locked>>	84%	33982	61%	**28	90%
[Hodgdon Superperformance]*	<<locked>>	91%	42250	76%	**45	90%
[Hodgdon VARGET]*	<<locked>>	81%	36724	66%	**48	94%
Hodgdon TrailBoss	<<locked>>	81%	26165	47%	**91	100%
IMR 3031	<<locked>>	81%	39668	72%	**92	100%
[IMR 4064]*	<<locked>>	81%	36071	65%	**22	94%
[IMR 4166 Enduron]*	<<locked>>	83%	38827	70%	**54	90%
[IMR 4350]*	<<locked>>	92%	41321	75%	**50	90%
[IMR 4451 Enduron]*	<<locked>>	85%	39813	72%	**00	90%
[IMR 4831]*	<<locked>>	89%	31430	57%	**46	90%
IMR 4895	<<locked>>	81%	40219	73%	**89	96%
Lovex D073.6	<<locked>>	81%	42670	77%	**25	99%
Lovex S060	<<locked>>	81%	43685	79%	**82	97%
Lovex S062	<<locked>>	81%	38435	70%	**07	97%
[Lovex S065]*	<<locked>>	84%	35273	64%	**89	90%
[Lovex S070]*	<<locked>>	88%	37840	68%	**81	90%
Norma 201	<<locked>>	81%	42699	77%	**99	98%
Norma 202	<<locked>>	81%	42917	78%	**09	100%
Norma 203B	<<locked>>	81%	38464	70%	**36	95%
[Norma URP]*	<<locked>>	85%	32010	58%	**76	90%
Ramshot Big Game	<<locked>>	81%	38508	70%	**46	95%
[Ramshot Hunter]*	<<locked>>	90%	37144	67%	**10	90%
Ramshot Wild Boar	<<locked>>	81%	45672	83%	**87	97%
ReloadSwiss RS 14	<<locked>>	81%	26513	48%	**41	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	37840	68%	**61	91%
ReloadSwiss RS 52	<<locked>>	81%	37579	68%	**50	97%
[ReloadSwiss RS 60]*	<<locked>>	81%	30922	56%	**76	93%
[ReloadSwiss RS 62]*	<<locked>>	86%	32967	60%	**18	90%
[ReloadSwiss RS 70]*	<<locked>>	88%	36013	65%	**97	90%
Rottweil R 902	<<locked>>	81%	40335	73%	**27	97%
[Rottweil R 903]*	<<locked>>	81%	33794	61%	**95	94%
[Rottweil R 907]*	<<locked>>	88%	40828	74%	**27	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	35201	64%	**68	94%
SNPE Vectan SP 7	<<locked>>	81%	44280	80%	**32	95%
SNPE Vectan SP 9	<<locked>>	81%	42540	77%	**05	97%
SNPE Vectan Tubal 3000	<<locked>>	81%	44512	81%	**73	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	36869	67%	**95	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	87%	38348	69%	**22	90%
[Shooters World Long Rifle]*	<<locked>>	84%	35273	64%	**89	90%
Shooters World Match Rifle	<<locked>>	81%	42670	77%	**25	99%
Shooters World Precision	<<locked>>	81%	38435	70%	**07	97%
Somchem S335	<<locked>>	81%	43918	79%	**69	100%
Somchem S341	<<locked>>	81%	44063	80%	**22	97%
[Somchem S355]*	<<locked>>	81%	34737	63%	**12	94%
[Somchem S365]*	<<locked>>	82%	26049	47%	**02	90%
Vihtavuori N133	<<locked>>	81%	41524	75%	**07	100%
Vihtavuori N135	<<locked>>	81%	33576	61%	**72	99%
Vihtavuori N140	<<locked>>	81%	40030	72%	**27	99%
[Vihtavuori N150]*	<<locked>>	81%	29385	53%	**35	94%
[Vihtavuori N160]*	<<locked>>	82%	31952	58%	**33	90%
Vihtavuori N540	<<locked>>	81%	39943	72%	**43	99%
[Vihtavuori N550]*	<<locked>>	82%	32285	58%	**82	90%
[Vihtavuori N555]*	<<locked>>	92%	30327	55%	**72	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	29689	54%	**25	92%
[Winchester 760]*	<<locked>>	86%	38783	70%	**63	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.