Load data for 6 x 52 R Bretschneider + .243 | 70gr | Merlin Virtus

Recommended Powder(s): Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.243 \| 70gr \| Merlin Virtus
Manufacturer SKU:	Merlin-0.243-70
Bullet Weight:	70gr \| 4.5g
Bullet Diameter:	0.243" \| 6.17mm
Bullet Length:	0.920" \| 23.4mm
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:	0.438" \| 11.1mm
Shank Seated Depth:	0.352" \| 8.9mm
Case Capacity:	36.2 Grains of Water \| 2.35 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	47863 psi \| 3300 bar
LID:	LID_B10745_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 | 70gr | Merlin Virtus bullet and 47 powders such as Accurate 2015, Alliant AR-Comp, Alliant Reloder-10x. 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>>	85%	42250	88%	**97	100%
ADI AR 2219	<<locked>>	87%	41829	87%	**36	97%
Accurate 2015 👍	<<locked>>	93%	42032	88%	**10	99%
[Accurate 2230]*	<<locked>>	91%	41945	88%	**77	92%
[Accurate 2460]*	<<locked>>	92%	42598	89%	**20	94%
Accurate 2495	<<locked>>	96%	37144	78%	**04	98%
Accurate 2520	<<locked>>	96%	40741	85%	**40	95%
[Accurate 4064]*	<<locked>>	96%	30472	64%	**20	93%
Alliant AR-Comp 👍	<<locked>>	97%	41350	86%	**82	100%
Alliant Reloder-10x 👍	<<locked>>	90%	41727	87%	**20	99%
Alliant Reloder-7	<<locked>>	83%	42148	88%	**64	100%
Baschieri & Pellagri 106	<<locked>>	87%	41843	87%	**22	98%
[Hodgdon BL-C2]*	<<locked>>	97%	42366	89%	**63	93%
[Hodgdon Benchmark]*	<<locked>>	93%	42453	89%	**64	94%
[Hodgdon CFE BLK]*	<<locked>>	84%	42917	90%	**28	93%
Hodgdon H322	<<locked>>	93%	41829	87%	**36	97%
Hodgdon H335	<<locked>>	89%	42699	89%	**49	96%
Hodgdon H4198	<<locked>>	85%	42192	88%	**31	97%
Hodgdon TrailBoss	<<locked>>	94%	29022	61%	**27	100%
IMR 3031	<<locked>>	96%	34780	73%	**38	96%
IMR 4198	<<locked>>	88%	41597	87%	**71	100%
[IMR 8208 XBR]*	<<locked>>	95%	42395	89%	**07	93%
[Lovex D073.4]*	<<locked>>	90%	42714	89%	**07	94%
[Lovex D073.5]*	<<locked>>	92%	42598	89%	**20	94%
[Lovex D073.6]*	<<locked>>	97%	37739	79%	**74	94%
Norma 200	<<locked>>	86%	41959	88%	**07	100%
[Norma 201]*	<<locked>>	96%	39682	83%	**51	92%
Norma 202	<<locked>>	96%	39349	82%	**84	95%
ReloadSwiss RS 14	<<locked>>	94%	28718	60%	**67	100%
ReloadSwiss RS 40	<<locked>>	91%	41959	88%	**10	95%
Rottweil R 901	<<locked>>	96%	42467	89%	**13	96%
SNPE Vectan SP 10	<<locked>>	88%	42960	90%	**49	96%
SNPE Vectan Tubal 3000	<<locked>>	96%	42946	90%	**58	96%
SNPE Vectan Tubal 5000	<<locked>>	96%	34330	72%	**87	95%
[Shooters World Match Rifle]*	<<locked>>	97%	37739	79%	**74	94%
[Shooters World Tactical Rifle]*	<<locked>>	88%	41989	88%	**54	92%
[Somchem S321]*	<<locked>>	93%	42467	89%	**33	93%
Somchem S335	<<locked>>	96%	41481	87%	**51	97%
Vihtavuori N120	<<locked>>	87%	42830	89%	**61	100%
Vihtavuori N130	<<locked>>	93%	42627	89%	**74	99%
Vihtavuori N133	<<locked>>	96%	39146	82%	**12	98%
[Vihtavuori N135]*	<<locked>>	97%	29240	61%	**41	94%
Vihtavuori N140	<<locked>>	96%	37231	78%	**05	95%
[Vihtavuori N530]*	<<locked>>	93%	41771	87%	**10	93%
[Vihtavuori N540]*	<<locked>>	97%	37376	78%	**35	94%
[Winchester 748]*	<<locked>>	94%	42989	90%	**79	94%
[Winchester StaBALL Match]*	<<locked>>	91%	42699	89%	**40	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2207	<<locked>>	81%	37637	79%	**08	100%
[ADI AR 2219]*	<<locked>>	81%	33504	70%	**40	94%
Accurate 2015	<<locked>>	81%	27978	58%	**72	95%
[Accurate 2230]*	<<locked>>	88%	37637	79%	**85	90%
[Accurate 2460]*	<<locked>>	85%	33127	69%	**07	91%
[Accurate 2495]*	<<locked>>	82%	22147	46%	**70	91%
[Accurate 2520]*	<<locked>>	88%	30182	63%	**84	90%
[Accurate 4064]*	<<locked>>	92%	26237	55%	**95	90%
Alliant AR-Comp	<<locked>>	81%	24860	52%	**36	95%
Alliant Reloder-10x	<<locked>>	81%	31140	65%	**74	97%
Alliant Reloder-7	<<locked>>	81%	39276	82%	**05	99%
Baschieri & Pellagri 106	<<locked>>	81%	34403	72%	**54	95%
[Hodgdon BL-C2]*	<<locked>>	93%	36767	77%	**44	91%
[Hodgdon Benchmark]*	<<locked>>	85%	33388	70%	**57	90%
[Hodgdon CFE BLK]*	<<locked>>	81%	38798	81%	**36	91%
[Hodgdon H322]*	<<locked>>	81%	28050	59%	**79	91%
[Hodgdon H335]*	<<locked>>	81%	32300	67%	**07	92%
Hodgdon H4198	<<locked>>	81%	38043	79%	**40	95%
Hodgdon TrailBoss	<<locked>>	81%	23656	49%	**99	100%
[IMR 3031]*	<<locked>>	86%	25179	53%	**33	90%
IMR 4198	<<locked>>	81%	33446	70%	**84	98%
[IMR 8208 XBR]*	<<locked>>	90%	35505	74%	**56	90%
[Lovex D073.4]*	<<locked>>	83%	32895	69%	**87	90%
[Lovex D073.5]*	<<locked>>	85%	33127	69%	**07	91%
[Lovex D073.6]*	<<locked>>	90%	30182	63%	**84	90%
Norma 200	<<locked>>	81%	34925	73%	**59	99%
[Norma 201]*	<<locked>>	93%	35520	74%	**59	90%
[Norma 202]*	<<locked>>	86%	28456	59%	**98	90%
ReloadSwiss RS 14	<<locked>>	81%	23467	49%	**39	100%
[ReloadSwiss RS 40]*	<<locked>>	82%	31415	66%	**54	90%
[Rottweil R 901]*	<<locked>>	83%	28703	60%	**75	90%
[SNPE Vectan SP 10]*	<<locked>>	81%	33562	70%	**40	93%
[SNPE Vectan Tubal 3000]*	<<locked>>	84%	28718	60%	**16	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	88%	26774	56%	**74	91%
[Shooters World Match Rifle]*	<<locked>>	90%	30182	63%	**84	90%
[Shooters World Tactical Rifle]*	<<locked>>	85%	37463	78%	**53	90%
[Somchem S321]*	<<locked>>	87%	34243	72%	**46	90%
[Somchem S335]*	<<locked>>	82%	26339	55%	**70	90%
Vihtavuori N120	<<locked>>	81%	35592	74%	**17	100%
Vihtavuori N130	<<locked>>	81%	29689	62%	**72	96%
[Vihtavuori N133]*	<<locked>>	81%	24497	51%	**18	92%
[Vihtavuori N135]*	<<locked>>	90%	23685	49%	**54	90%
[Vihtavuori N140]*	<<locked>>	88%	28137	59%	**66	91%
[Vihtavuori N530]*	<<locked>>	88%	34969	73%	**49	90%
[Vihtavuori N540]*	<<locked>>	89%	29298	61%	**21	90%
[Winchester 748]*	<<locked>>	87%	33576	70%	**49	90%
[Winchester StaBALL Match]*	<<locked>>	89%	38537	81%	**48	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.