Load data for .243 Ackley Improved + .243 | 71gr | Berger BT M

Recommended Powder(s): Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 60, Rottweil R 903, Somchem S355

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 71gr \| Berger BT M
Bullet Weight:	71gr \| 4.6g
Bullet Diameter:	0.243" \| 6.17mm
Bullet Length:	0.938" \| 23.8mm
Caliber:	.243 Ackley Improved load data
Case Length (l3):	2.045" \| 51.9mm
Cartridge Length (C.O.L.):	2.458" \| 62.4mm
Seated Depth:	0.525" \| 13.3mm
Shank Seated Depth:	0.425" \| 10.8mm
Case Capacity:	57.0 Grains of Water \| 3.70 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	55259 psi \| 3810 bar
LID:	LID_B937_C1011
Last updated:	2025-01-01
Recommended Twist Rate:	1:10 - 1:9

Load data for 146 loads in caliber .243 Ackley Improved with .243 | 71gr | Berger BT M bullet and 73 powders such as Alliant Reloder- TS 15.5, Alliant Reloder-17, 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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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.
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.

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%	49124	89%	**33	98%
ADI AR 2208	<<locked>>	90%	49603	90%	**27	98%
Accurate 2495	<<locked>>	84%	49110	89%	**23	100%
[Accurate 2700]*	<<locked>>	91%	49313	89%	**32	93%
Accurate 4064	<<locked>>	89%	49037	89%	**23	100%
Accurate 4350	<<locked>>	97%	48327	87%	**66	97%
Alliant AR-Comp	<<locked>>	83%	49414	89%	**20	100%
Alliant Reloder- TS 15.5 👍	<<locked>>	90%	48733	88%	**40	99%
Alliant Reloder-15	<<locked>>	88%	49124	89%	**50	98%
Alliant Reloder-16	<<locked>>	96%	46630	84%	**60	97%
Alliant Reloder-17 👍	<<locked>>	94%	48979	89%	**38	99%
[Alliant Reloder-23]*	<<locked>>	97%	33866	61%	**28	93%
Baschieri & Pellagri 107	<<locked>>	85%	49255	89%	**43	97%
Hodgdon CFE223	<<locked>>	88%	49153	89%	**79	97%
Hodgdon H380	<<locked>>	89%	49603	90%	**43	97%
[Hodgdon H414]*	<<locked>>	93%	49574	90%	**86	94%
[Hodgdon H4350]*	<<locked>>	97%	46006	83%	**35	92%
Hodgdon Hybrid 100V	<<locked>>	97%	43352	78%	**38	97%
Hodgdon LVR	<<locked>>	95%	49008	89%	**73	96%
[Hodgdon Superperformance]*	<<locked>>	95%	48820	88%	**79	93%
Hodgdon VARGET	<<locked>>	90%	49037	89%	**14	98%
Hodgdon TrailBoss	<<locked>>	96%	33373	60%	**49	100%
IMR 3031	<<locked>>	87%	49110	89%	**60	100%
IMR 4064	<<locked>>	91%	49298	89%	**07	98%
[IMR 4166 Enduron]*	<<locked>>	90%	48878	88%	**58	94%
[IMR 4350]*	<<locked>>	97%	48385	88%	**84	93%
[IMR 4451 Enduron]*	<<locked>>	92%	49574	90%	**01	94%
IMR 4831	<<locked>>	97%	40741	74%	**73	95%
IMR 4895	<<locked>>	87%	49327	89%	**76	98%
Lovex D073.6	<<locked>>	85%	48863	88%	**20	100%
Lovex S060	<<locked>>	84%	48849	88%	**58	98%
Lovex S062	<<locked>>	88%	49313	89%	**17	99%
Lovex S065	<<locked>>	95%	49632	90%	**04	96%
[Lovex S070]*	<<locked>>	96%	49284	89%	**17	94%
Norma 201	<<locked>>	85%	48733	88%	**94	99%
Norma 202	<<locked>>	85%	49458	90%	**20	100%
Norma 203B	<<locked>>	88%	49385	89%	**56	98%
Norma URP	<<locked>>	97%	48037	87%	**66	97%
Ramshot Big Game	<<locked>>	88%	48936	89%	**56	98%
Ramshot Hunter	<<locked>>	97%	47326	86%	**46	95%
ReloadSwiss RS 14	<<locked>>	97%	33794	61%	**98	100%
ReloadSwiss RS 50	<<locked>>	89%	49081	89%	**01	95%
ReloadSwiss RS 52	<<locked>>	89%	49530	90%	**96	99%
ReloadSwiss RS 60 👍	<<locked>>	94%	48747	88%	**48	99%
ReloadSwiss RS 62	<<locked>>	97%	48109	87%	**89	97%
ReloadSwiss RS 70	<<locked>>	96%	47790	86%	**83	96%
Rottweil R 901	<<locked>>	83%	49632	90%	**94	100%
Rottweil R 902	<<locked>>	87%	49617	90%	**01	99%
Rottweil R 903 👍	<<locked>>	92%	48820	88%	**40	99%
[Rottweil R 907]*	<<locked>>	94%	49603	90%	**94	93%
SNPE Vectan SP 11	<<locked>>	91%	48936	89%	**73	98%
SNPE Vectan SP 7	<<locked>>	84%	49487	90%	**04	96%
SNPE Vectan SP 9	<<locked>>	86%	49327	89%	**23	98%
SNPE Vectan Tubal 3000	<<locked>>	84%	49371	89%	**41	100%
SNPE Vectan Tubal 5000	<<locked>>	90%	48863	88%	**22	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	95%	49342	89%	**35	94%
Shooters World Long Rifle	<<locked>>	95%	49632	90%	**04	96%
Shooters World Match Rifle	<<locked>>	85%	48863	88%	**20	100%
Shooters World Precision	<<locked>>	88%	49313	89%	**17	99%
Somchem S335	<<locked>>	84%	48733	88%	**28	100%
Somchem S341	<<locked>>	84%	49356	89%	**10	98%
Somchem S355 👍	<<locked>>	92%	49284	89%	**40	99%
Somchem S365	<<locked>>	97%	42699	77%	**94	99%
Vihtavuori N133	<<locked>>	86%	48675	88%	**25	100%
Vihtavuori N135	<<locked>>	93%	48921	89%	**84	100%
Vihtavuori N140	<<locked>>	87%	49124	89%	**78	100%
Vihtavuori N150	<<locked>>	96%	48689	88%	**84	99%
Vihtavuori N160	<<locked>>	95%	48950	89%	**37	97%
Vihtavuori N540	<<locked>>	87%	49284	89%	**17	100%
Vihtavuori N550	<<locked>>	94%	49197	89%	**83	97%
[Vihtavuori N555]*	<<locked>>	96%	35476	64%	**10	93%
Winchester 6.5 StaBALL	<<locked>>	96%	49574	90%	**17	99%
[Winchester 760]*	<<locked>>	93%	49574	90%	**86	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	44019	80%	**25	97%
[ADI AR 2208]*	<<locked>>	81%	37463	68%	**35	94%
Accurate 2495	<<locked>>	81%	44730	81%	**38	100%
[Accurate 2700]*	<<locked>>	86%	41800	76%	**64	90%
Accurate 4064	<<locked>>	81%	37652	68%	**84	99%
[Accurate 4350]*	<<locked>>	85%	31531	57%	**46	90%
Alliant AR-Comp	<<locked>>	81%	45934	83%	**61	100%
Alliant Reloder- TS 15.5	<<locked>>	81%	36825	67%	**58	96%
Alliant Reloder-15	<<locked>>	81%	39581	72%	**33	95%
[Alliant Reloder-16]*	<<locked>>	85%	32474	59%	**66	90%
[Alliant Reloder-17]*	<<locked>>	81%	31850	58%	**72	92%
[Alliant Reloder-23]*	<<locked>>	93%	29820	54%	**97	91%
Baschieri & Pellagri 107	<<locked>>	81%	43482	79%	**22	96%
[Hodgdon CFE223]*	<<locked>>	81%	37956	69%	**20	94%
[Hodgdon H380]*	<<locked>>	81%	37231	67%	**54	92%
[Hodgdon H414]*	<<locked>>	87%	39885	72%	**59	90%
[Hodgdon H4350]*	<<locked>>	94%	41466	75%	**27	90%
[Hodgdon Hybrid 100V]*	<<locked>>	83%	27847	50%	**92	90%
[Hodgdon LVR]*	<<locked>>	84%	33663	61%	**89	90%
[Hodgdon Superperformance]*	<<locked>>	91%	41959	76%	**15	90%
[Hodgdon VARGET]*	<<locked>>	81%	36970	67%	**31	94%
Hodgdon TrailBoss	<<locked>>	81%	26368	48%	**72	100%
IMR 3031	<<locked>>	81%	40016	72%	**66	100%
[IMR 4064]*	<<locked>>	81%	36492	66%	**09	94%
[IMR 4166 Enduron]*	<<locked>>	83%	38943	70%	**25	90%
[IMR 4350]*	<<locked>>	91%	40712	74%	**17	90%
[IMR 4451 Enduron]*	<<locked>>	86%	40132	73%	**81	90%
[IMR 4831]*	<<locked>>	88%	31140	56%	**13	90%
IMR 4895	<<locked>>	81%	40611	73%	**69	96%
Lovex D073.6	<<locked>>	81%	42641	77%	**99	99%
Lovex S060	<<locked>>	81%	44005	80%	**53	97%
Lovex S062	<<locked>>	81%	38856	70%	**87	97%
[Lovex S065]*	<<locked>>	84%	35520	64%	**69	90%
[Lovex S070]*	<<locked>>	88%	38174	69%	**54	90%
Norma 201	<<locked>>	81%	42743	77%	**66	98%
Norma 202	<<locked>>	81%	43265	78%	**96	100%
Norma 203B	<<locked>>	81%	39102	71%	**23	96%
[Norma URP]*	<<locked>>	85%	32271	58%	**59	90%
Ramshot Big Game	<<locked>>	81%	38479	70%	**20	95%
[Ramshot Hunter]*	<<locked>>	90%	37594	68%	**94	90%
ReloadSwiss RS 14	<<locked>>	81%	26832	49%	**18	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	37913	69%	**35	90%
ReloadSwiss RS 52	<<locked>>	81%	37666	68%	**30	97%
[ReloadSwiss RS 60]*	<<locked>>	81%	31024	56%	**56	93%
[ReloadSwiss RS 62]*	<<locked>>	86%	32924	60%	**02	90%
[ReloadSwiss RS 70]*	<<locked>>	88%	36419	66%	**81	90%
Rottweil R 901	<<locked>>	81%	46760	85%	**41	100%
Rottweil R 902	<<locked>>	81%	40886	74%	**17	98%
Rottweil R 903	<<locked>>	81%	34113	62%	**92	95%
[Rottweil R 907]*	<<locked>>	88%	41002	74%	**04	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	35201	64%	**41	94%
SNPE Vectan SP 7	<<locked>>	81%	44498	81%	**99	95%
SNPE Vectan SP 9	<<locked>>	81%	42540	77%	**79	97%
SNPE Vectan Tubal 3000	<<locked>>	81%	44266	80%	**40	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	36535	66%	**63	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	87%	38551	70%	**02	90%
[Shooters World Long Rifle]*	<<locked>>	84%	35520	64%	**69	90%
Shooters World Match Rifle	<<locked>>	81%	42641	77%	**99	99%
Shooters World Precision	<<locked>>	81%	38856	70%	**87	97%
Somchem S335	<<locked>>	81%	43859	79%	**33	100%
Somchem S341	<<locked>>	81%	44396	80%	**05	97%
Somchem S355	<<locked>>	81%	34766	63%	**95	95%
[Somchem S365]*	<<locked>>	82%	26208	47%	**82	91%
Vihtavuori N133	<<locked>>	81%	41713	75%	**84	100%
Vihtavuori N135	<<locked>>	81%	33939	61%	**59	99%
Vihtavuori N140	<<locked>>	81%	40350	73%	**00	99%
[Vihtavuori N150]*	<<locked>>	81%	29849	54%	**18	94%
[Vihtavuori N160]*	<<locked>>	82%	32227	58%	**17	90%
Vihtavuori N540	<<locked>>	81%	39856	72%	**10	99%
[Vihtavuori N550]*	<<locked>>	82%	32532	59%	**66	90%
[Vihtavuori N555]*	<<locked>>	92%	30371	55%	**43	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	30095	54%	**18	92%
[Winchester 760]*	<<locked>>	87%	39885	72%	**59	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.

<<locked>>... you need to buy an access license to unlock the data