Load data for 6 x 52 R Bretschneider + .243 | 71gr | Berger BT M

Recommended Powder(s):

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:	6 x 52 R Bretschneider load data
Case Length (l3):	2.040" \| 51.8mm
Cartridge Length (C.O.L.):	2.522" \| 64.0mm
Seated Depth:	0.456" \| 11.6mm
Shank Seated Depth:	0.356" \| 9.1mm
Case Capacity:	36.2 Grains of Water \| 2.35 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	47863 psi \| 3300 bar
LID:	LID_B937_C965
Last updated:	2025-01-01
Recommended Twist Rate:	1:10 - 1:9

Load data for 94 loads in caliber 6 x 52 R Bretschneider with .243 | 71gr | Berger BT M bullet and 47 powder(s). 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 2207	<<locked>>	83%	41916	88%	**61	100%
ADI AR 2219	<<locked>>	87%	42946	90%	**33	97%
Accurate 2015 👍	<<locked>>	93%	42786	89%	**94	99%
[Accurate 2230]*	<<locked>>	90%	41901	88%	**51	92%
[Accurate 2460]*	<<locked>>	91%	42743	89%	**90	94%
Accurate 2495	<<locked>>	97%	39914	83%	**30	98%
Accurate 2520	<<locked>>	96%	42409	89%	**49	96%
[Accurate 4064]*	<<locked>>	97%	32880	69%	**56	94%
Alliant AR-Comp 👍	<<locked>>	97%	42728	89%	**82	100%
Alliant Reloder-10x 👍	<<locked>>	89%	42540	89%	**04	99%
Baschieri & Pellagri 106	<<locked>>	87%	43004	90%	**18	98%
[Hodgdon BL-C2]*	<<locked>>	96%	43047	90%	**63	93%
[Hodgdon Benchmark]*	<<locked>>	92%	42989	90%	**48	94%
[Hodgdon CFE BLK]*	<<locked>>	83%	42685	89%	**99	93%
Hodgdon H322	<<locked>>	92%	42003	88%	**10	97%
Hodgdon H335	<<locked>>	87%	41771	87%	**07	96%
Hodgdon H4198	<<locked>>	83%	41582	87%	**92	97%
Hodgdon TrailBoss	<<locked>>	95%	29646	62%	**21	100%
IMR 3031	<<locked>>	96%	36114	75%	**48	96%
IMR 4198	<<locked>>	87%	41901	88%	**51	100%
[IMR 8208 XBR]*	<<locked>>	94%	42337	88%	**84	93%
[Lovex D073.4]*	<<locked>>	89%	42395	89%	**77	94%
[Lovex D073.5]*	<<locked>>	91%	42743	89%	**90	94%
Lovex D073.6	<<locked>>	97%	40248	84%	**04	95%
Norma 200	<<locked>>	86%	42946	90%	**00	100%
[Norma 201]*	<<locked>>	97%	41843	87%	**77	93%
Norma 202	<<locked>>	97%	41655	87%	**04	96%
ReloadSwiss RS 14	<<locked>>	94%	29414	61%	**60	100%
ReloadSwiss RS 40	<<locked>>	89%	41655	87%	**77	95%
Rottweil R 901	<<locked>>	94%	42090	88%	**81	96%
[Rottweil R 902]*	<<locked>>	97%	39639	83%	**18	92%
SNPE Vectan SP 10	<<locked>>	87%	42685	89%	**20	96%
SNPE Vectan Tubal 3000	<<locked>>	95%	42757	89%	**28	96%
SNPE Vectan Tubal 5000	<<locked>>	96%	35418	74%	**87	95%
Shooters World Match Rifle	<<locked>>	97%	40248	84%	**04	95%
[Shooters World Tactical Rifle]*	<<locked>>	87%	41698	87%	**18	92%
[Somchem S321]*	<<locked>>	92%	42525	89%	**10	94%
Somchem S335	<<locked>>	95%	42308	88%	**41	97%
Vihtavuori N120	<<locked>>	86%	42380	89%	**25	100%
Vihtavuori N130	<<locked>>	91%	42322	88%	**41	99%
Vihtavuori N133	<<locked>>	96%	40321	84%	**08	98%
Vihtavuori N135	<<locked>>	96%	30545	64%	**54	95%
Vihtavuori N140	<<locked>>	96%	38493	80%	**08	95%
[Vihtavuori N530]*	<<locked>>	92%	41640	87%	**84	93%
Vihtavuori N540	<<locked>>	96%	38043	79%	**22	95%
[Winchester 748]*	<<locked>>	93%	42670	89%	**43	94%
[Winchester StaBALL Match]*	<<locked>>	90%	42424	89%	**17	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2207	<<locked>>	81%	38943	81%	**02	100%
ADI AR 2219	<<locked>>	81%	34635	72%	**43	95%
Accurate 2015	<<locked>>	81%	29805	62%	**95	96%
[Accurate 2230]*	<<locked>>	87%	37724	79%	**62	90%
[Accurate 2460]*	<<locked>>	83%	32213	67%	**54	90%
[Accurate 2495]*	<<locked>>	81%	23235	49%	**80	92%
[Accurate 2520]*	<<locked>>	87%	30705	64%	**64	91%
[Accurate 4064]*	<<locked>>	90%	26513	55%	**69	90%
Alliant AR-Comp	<<locked>>	81%	25962	54%	**43	96%
Alliant Reloder-10x	<<locked>>	81%	33011	69%	**90	98%
Baschieri & Pellagri 106	<<locked>>	81%	35476	74%	**54	96%
[Hodgdon BL-C2]*	<<locked>>	91%	36390	76%	**02	90%
[Hodgdon Benchmark]*	<<locked>>	84%	34026	71%	**41	91%
[Hodgdon CFE BLK]*	<<locked>>	81%	40045	84%	**36	92%
[Hodgdon H322]*	<<locked>>	81%	29559	62%	**98	92%
[Hodgdon H335]*	<<locked>>	81%	33924	71%	**23	93%
Hodgdon H4198	<<locked>>	81%	38798	81%	**26	96%
Hodgdon TrailBoss	<<locked>>	82%	24308	51%	**93	100%
[IMR 3031]*	<<locked>>	84%	25367	53%	**16	90%
IMR 4198	<<locked>>	81%	34867	73%	**94	99%
[IMR 8208 XBR]*	<<locked>>	89%	35505	74%	**30	90%
[Lovex D073.4]*	<<locked>>	82%	33170	69%	**67	91%
[Lovex D073.5]*	<<locked>>	83%	32213	67%	**54	90%
[Lovex D073.6]*	<<locked>>	89%	29878	62%	**44	90%
Norma 200	<<locked>>	81%	37072	77%	**76	99%
[Norma 201]*	<<locked>>	91%	35302	74%	**23	90%
[Norma 202]*	<<locked>>	85%	28326	59%	**69	90%
ReloadSwiss RS 14	<<locked>>	82%	24192	51%	**32	100%
[ReloadSwiss RS 40]*	<<locked>>	81%	31589	66%	**31	91%
[Rottweil R 901]*	<<locked>>	81%	28863	60%	**46	90%
[Rottweil R 902]*	<<locked>>	92%	34534	72%	**00	90%
[SNPE Vectan SP 10]*	<<locked>>	81%	34940	73%	**40	93%
[SNPE Vectan Tubal 3000]*	<<locked>>	82%	28863	60%	**00	91%
[SNPE Vectan Tubal 5000]*	<<locked>>	86%	26063	54%	**18	90%
[Shooters World Match Rifle]*	<<locked>>	89%	29878	62%	**44	90%
[Shooters World Tactical Rifle]*	<<locked>>	83%	36289	76%	**00	90%
[Somchem S321]*	<<locked>>	86%	34490	72%	**26	90%
[Somchem S335]*	<<locked>>	81%	27079	57%	**70	91%
Vihtavuori N120	<<locked>>	81%	36666	77%	**17	100%
Vihtavuori N130	<<locked>>	81%	30777	64%	**79	97%
[Vihtavuori N133]*	<<locked>>	81%	25614	54%	**28	92%
[Vihtavuori N135]*	<<locked>>	88%	23859	50%	**31	90%
[Vihtavuori N140]*	<<locked>>	85%	27369	57%	**13	90%
[Vihtavuori N530]*	<<locked>>	86%	34925	73%	**23	90%
[Vihtavuori N540]*	<<locked>>	88%	29022	61%	**82	90%
[Winchester 748]*	<<locked>>	86%	33678	70%	**30	90%
[Winchester StaBALL Match]*	<<locked>>	88%	38435	80%	**25	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.