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

Recommended Powder(s): Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Rottweil R 903, Somchem S355

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 70gr \| Speer HP TNT
Manufacturer SKU:	1206
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_B6069_C1011
Last updated:	2025-01-01

Load data for 142 loads in caliber .243 Ackley Improved with .243 | 70gr | Speer HP TNT bullet and 71 powders such as Alliant Reloder-17, ReloadSwiss RS 52, 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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C.O.L. (mm)
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Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
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 2206H	<<locked>>	84%	49342	89%	**69	98%
ADI AR 2208	<<locked>>	89%	48849	88%	**30	98%
[Accurate 2700]*	<<locked>>	90%	49472	90%	**58	93%
Accurate 4064	<<locked>>	88%	48950	89%	**43	100%
Accurate 4350	<<locked>>	97%	49487	90%	**22	97%
Alliant Reloder- TS 15.5	<<locked>>	89%	49124	89%	**76	99%
Alliant Reloder-15	<<locked>>	87%	49530	90%	**89	98%
Alliant Reloder-16	<<locked>>	97%	48066	87%	**25	97%
Alliant Reloder-17 👍	<<locked>>	93%	49661	90%	**84	99%
[Alliant Reloder-23]*	<<locked>>	97%	34200	62%	**58	94%
[Alliant Reloder-26]*	<<locked>>	97%	38130	69%	**22	92%
Baschieri & Pellagri 107	<<locked>>	84%	48950	89%	**66	97%
Hodgdon CFE223	<<locked>>	87%	48965	89%	**99	97%
Hodgdon H380	<<locked>>	89%	49182	89%	**60	97%
[Hodgdon H414]*	<<locked>>	92%	49095	89%	**96	94%
[Hodgdon H4350]*	<<locked>>	97%	46586	84%	**68	92%
Hodgdon Hybrid 100V	<<locked>>	97%	44440	80%	**84	98%
Hodgdon LVR	<<locked>>	94%	49095	89%	**99	96%
[Hodgdon Superperformance]*	<<locked>>	94%	49095	89%	**96	93%
Hodgdon VARGET	<<locked>>	90%	49429	89%	**40	98%
Hodgdon TrailBoss	<<locked>>	96%	33170	60%	**69	100%
IMR 3031	<<locked>>	87%	48776	88%	**76	100%
IMR 4064	<<locked>>	90%	48762	88%	**17	98%
[IMR 4166 Enduron]*	<<locked>>	90%	49647	90%	**04	94%
[IMR 4350]*	<<locked>>	96%	48921	89%	**17	93%
[IMR 4451 Enduron]*	<<locked>>	92%	49603	90%	**27	94%
IMR 4831	<<locked>>	97%	41336	75%	**22	95%
IMR 4895	<<locked>>	87%	49617	90%	**99	98%
Lovex D073.6	<<locked>>	84%	48660	88%	**46	100%
Lovex S060	<<locked>>	84%	49414	89%	**94	98%
Lovex S062	<<locked>>	87%	48718	88%	**37	99%
Lovex S065	<<locked>>	94%	49313	89%	**23	96%
[Lovex S070]*	<<locked>>	95%	49023	89%	**33	94%
Norma 201	<<locked>>	84%	48675	88%	**23	99%
Norma 202	<<locked>>	84%	48834	88%	**30	100%
Norma 203B	<<locked>>	87%	48733	88%	**73	98%
Norma URP	<<locked>>	97%	48689	88%	**96	97%
Ramshot Big Game	<<locked>>	87%	48530	88%	**73	98%
Ramshot Hunter	<<locked>>	97%	47703	86%	**69	95%
ReloadSwiss RS 14	<<locked>>	96%	33562	61%	**18	100%
ReloadSwiss RS 50	<<locked>>	89%	49647	90%	**37	95%
ReloadSwiss RS 52 👍	<<locked>>	88%	49197	89%	**12	99%
ReloadSwiss RS 60 👍	<<locked>>	94%	49197	89%	**88	99%
ReloadSwiss RS 62	<<locked>>	97%	49168	89%	**22	97%
ReloadSwiss RS 70	<<locked>>	97%	49327	89%	**45	96%
Rottweil R 902	<<locked>>	86%	49052	89%	**20	99%
Rottweil R 903 👍	<<locked>>	91%	49574	90%	**79	99%
[Rottweil R 907]*	<<locked>>	93%	49298	89%	**17	93%
SNPE Vectan SP 11	<<locked>>	90%	49530	90%	**06	98%
SNPE Vectan SP 7	<<locked>>	83%	49284	89%	**27	96%
SNPE Vectan SP 9	<<locked>>	85%	49110	89%	**50	98%
SNPE Vectan Tubal 3000	<<locked>>	84%	49327	89%	**64	100%
SNPE Vectan Tubal 5000	<<locked>>	89%	48791	88%	**41	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	94%	48950	89%	**48	94%
Shooters World Long Rifle	<<locked>>	94%	49313	89%	**23	96%
Shooters World Match Rifle	<<locked>>	84%	48660	88%	**46	100%
Shooters World Precision	<<locked>>	87%	48718	88%	**37	99%
Somchem S335	<<locked>>	84%	48733	88%	**48	100%
Somchem S341	<<locked>>	83%	49052	89%	**33	98%
Somchem S355 👍	<<locked>>	91%	49139	89%	**63	99%
Somchem S365	<<locked>>	96%	43120	78%	**20	99%
Vihtavuori N133	<<locked>>	86%	49182	89%	**58	100%
Vihtavuori N135	<<locked>>	92%	49371	89%	**10	100%
Vihtavuori N140	<<locked>>	87%	49458	90%	**14	100%
Vihtavuori N150	<<locked>>	96%	48921	89%	**10	99%
Vihtavuori N160	<<locked>>	94%	48704	88%	**56	97%
Vihtavuori N540	<<locked>>	87%	49240	89%	**33	100%
Vihtavuori N550	<<locked>>	94%	48791	88%	**92	97%
[Vihtavuori N555]*	<<locked>>	97%	36622	66%	**59	94%
Winchester 6.5 StaBALL	<<locked>>	95%	48646	88%	**14	99%
[Winchester 760]*	<<locked>>	92%	49095	89%	**96	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	44527	81%	**58	97%
[ADI AR 2208]*	<<locked>>	81%	37985	69%	**71	94%
[Accurate 2700]*	<<locked>>	85%	41263	75%	**77	90%
Accurate 4064	<<locked>>	81%	38740	70%	**23	99%
[Accurate 4350]*	<<locked>>	84%	31198	56%	**53	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	37217	67%	**91	96%
Alliant Reloder-15	<<locked>>	81%	40219	73%	**69	95%
[Alliant Reloder-16]*	<<locked>>	84%	32489	59%	**86	90%
[Alliant Reloder-17]*	<<locked>>	81%	32532	59%	**25	93%
[Alliant Reloder-23]*	<<locked>>	92%	29646	54%	**10	91%
[Alliant Reloder-26]*	<<locked>>	95%	35172	64%	**23	90%
Baschieri & Pellagri 107	<<locked>>	81%	44266	80%	**68	96%
[Hodgdon CFE223]*	<<locked>>	81%	38624	70%	**53	94%
[Hodgdon H380]*	<<locked>>	81%	38159	69%	**97	93%
[Hodgdon H414]*	<<locked>>	86%	39581	72%	**76	90%
[Hodgdon H4350]*	<<locked>>	93%	41133	74%	**43	90%
[Hodgdon Hybrid 100V]*	<<locked>>	83%	28326	51%	**18	90%
[Hodgdon LVR]*	<<locked>>	83%	34113	62%	**22	90%
[Hodgdon Superperformance]*	<<locked>>	90%	42221	76%	**38	90%
[Hodgdon VARGET]*	<<locked>>	81%	37623	68%	**61	94%
Hodgdon TrailBoss	<<locked>>	81%	26382	48%	**91	100%
IMR 3031	<<locked>>	81%	40698	74%	**09	100%
[IMR 4064]*	<<locked>>	81%	36999	67%	**48	94%
[IMR 4166 Enduron]*	<<locked>>	82%	38798	70%	**45	90%
[IMR 4350]*	<<locked>>	91%	41539	75%	**50	90%
[IMR 4451 Enduron]*	<<locked>>	85%	39711	72%	**91	90%
[IMR 4831]*	<<locked>>	88%	31096	56%	**36	90%
IMR 4895	<<locked>>	81%	41118	74%	**15	96%
Lovex D073.6	<<locked>>	81%	43700	79%	**38	99%
Lovex S060	<<locked>>	81%	44686	81%	**92	97%
Lovex S062	<<locked>>	81%	39552	72%	**27	97%
[Lovex S065]*	<<locked>>	83%	34664	63%	**72	90%
[Lovex S070]*	<<locked>>	88%	37985	69%	**74	90%
Norma 201	<<locked>>	81%	43787	79%	**15	98%
Norma 202	<<locked>>	81%	44005	80%	**35	100%
Norma 203B	<<locked>>	81%	39465	71%	**53	96%
[Norma URP]*	<<locked>>	84%	31575	57%	**63	90%
Ramshot Big Game	<<locked>>	81%	39262	71%	**69	95%
[Ramshot Hunter]*	<<locked>>	89%	37231	67%	**20	90%
ReloadSwiss RS 14	<<locked>>	81%	26847	49%	**44	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	38711	70%	**74	91%
ReloadSwiss RS 52	<<locked>>	81%	38638	70%	**69	97%
[ReloadSwiss RS 60]*	<<locked>>	81%	31676	57%	**95	93%
[ReloadSwiss RS 62]*	<<locked>>	85%	32474	59%	**05	90%
[ReloadSwiss RS 70]*	<<locked>>	88%	35984	65%	**00	90%
Rottweil R 902	<<locked>>	81%	41481	75%	**56	98%
Rottweil R 903	<<locked>>	81%	34896	63%	**22	95%
[Rottweil R 907]*	<<locked>>	87%	40843	74%	**17	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	36027	65%	**81	94%
SNPE Vectan SP 7	<<locked>>	81%	45295	82%	**45	95%
SNPE Vectan SP 9	<<locked>>	81%	43453	79%	**32	97%
SNPE Vectan Tubal 3000	<<locked>>	81%	45252	82%	**89	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	37550	68%	**02	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	87%	38479	70%	**25	90%
[Shooters World Long Rifle]*	<<locked>>	83%	34664	63%	**72	90%
Shooters World Match Rifle	<<locked>>	81%	43700	79%	**38	99%
Shooters World Precision	<<locked>>	81%	39552	72%	**27	97%
Somchem S335	<<locked>>	81%	44846	81%	**76	100%
Somchem S341	<<locked>>	81%	45179	82%	**48	97%
Somchem S355	<<locked>>	81%	35679	65%	**45	95%
[Somchem S365]*	<<locked>>	81%	25846	47%	**89	90%
Vihtavuori N133	<<locked>>	81%	42366	77%	**27	100%
Vihtavuori N135	<<locked>>	81%	34606	63%	**92	99%
Vihtavuori N140	<<locked>>	81%	40770	74%	**33	99%
[Vihtavuori N150]*	<<locked>>	81%	30313	55%	**58	94%
[Vihtavuori N160]*	<<locked>>	81%	31662	57%	**23	90%
Vihtavuori N540	<<locked>>	81%	40843	74%	**53	99%
[Vihtavuori N550]*	<<locked>>	81%	31836	58%	**66	90%
[Vihtavuori N555]*	<<locked>>	91%	30719	56%	**76	91%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	30603	55%	**51	92%
[Winchester 760]*	<<locked>>	86%	39581	72%	**76	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.