Load data for .350 Mag. Rigby + .356 | 123gr | LOS FP

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

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.356 \| 123gr \| LOS FP
Bullet Weight:	123gr \| 8.0g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.567" \| 14.4mm
Caliber:	.350 Mag. Rigby load data
Case Length (l3):	2.750" \| 69.8mm
Cartridge Length (C.O.L.):	3.195" \| 81.2mm
Seated Depth:	0.122" \| 3.1mm
Shank Seated Depth:	0.122" \| 3.1mm
Case Capacity:	91.1 Grains of Water \| 5.92 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B3509_C501
Last updated:	2025-01-01

Load data for 74 loads in caliber .350 Mag. Rigby with .356 | 123gr | LOS FP bullet and 37 powders such as 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 2219	<<locked>>	84%	39914	89%	**01	96%
Accurate 2015	<<locked>>	89%	39929	89%	**61	98%
[Accurate 2460]*	<<locked>>	87%	40176	89%	**55	93%
Accurate 2495	<<locked>>	95%	39827	89%	**46	98%
[Accurate 2520]*	<<locked>>	93%	39900	89%	**14	94%
[Accurate 4064]*	<<locked>>	97%	35505	79%	**15	94%
Alliant AR-Comp 👍	<<locked>>	93%	40263	90%	**69	100%
Alliant Reloder-10x 👍	<<locked>>	86%	40437	90%	**07	99%
Baschieri & Pellagri 106	<<locked>>	83%	40205	89%	**76	97%
[Hodgdon Benchmark]*	<<locked>>	89%	40451	90%	**22	92%
Hodgdon H322	<<locked>>	89%	40147	89%	**14	96%
Hodgdon H335	<<locked>>	84%	40132	89%	**91	95%
Hodgdon TrailBoss	<<locked>>	96%	30124	67%	**95	100%
IMR 3031	<<locked>>	97%	39450	88%	**46	97%
IMR 4198	<<locked>>	84%	40074	89%	**51	99%
[Lovex D073.4]*	<<locked>>	86%	40335	90%	**48	93%
[Lovex D073.5]*	<<locked>>	88%	40248	90%	**64	93%
[Lovex D073.6]*	<<locked>>	95%	39900	89%	**14	94%
[Norma 201]*	<<locked>>	93%	40045	89%	**51	91%
Norma 202	<<locked>>	94%	40379	90%	**04	95%
ReloadSwiss RS 14	<<locked>>	96%	30066	67%	**47	100%
[ReloadSwiss RS 40]*	<<locked>>	87%	40466	90%	**68	93%
Rottweil R 901	<<locked>>	91%	40321	90%	**71	95%
[Rottweil R 902]*	<<locked>>	96%	40321	90%	**45	91%
SNPE Vectan SP 10	<<locked>>	83%	40176	89%	**84	95%
SNPE Vectan Tubal 3000	<<locked>>	91%	40422	90%	**05	95%
SNPE Vectan Tubal 5000	<<locked>>	97%	38305	85%	**63	95%
[Shooters World Match Rifle]*	<<locked>>	95%	39900	89%	**14	94%
[Somchem S321]*	<<locked>>	88%	40045	89%	**78	92%
Somchem S335	<<locked>>	92%	40292	90%	**28	96%
Vihtavuori N130	<<locked>>	88%	40103	89%	**25	98%
Vihtavuori N133	<<locked>>	94%	40393	90%	**35	98%
Vihtavuori N135	<<locked>>	97%	32663	73%	**10	95%
Vihtavuori N140	<<locked>>	96%	40219	89%	**71	95%
[Vihtavuori N530]*	<<locked>>	89%	39929	89%	**74	92%
Vihtavuori N540	<<locked>>	96%	40030	89%	**78	95%
[Winchester 748]*	<<locked>>	89%	40393	90%	**27	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2219	<<locked>>	81%	36390	81%	**09	95%
Accurate 2015	<<locked>>	81%	30429	68%	**02	95%
[Accurate 2460]*	<<locked>>	83%	33765	75%	**91	90%
[Accurate 2495]*	<<locked>>	81%	24004	53%	**51	90%
[Accurate 2520]*	<<locked>>	86%	31763	71%	**84	90%
[Accurate 4064]*	<<locked>>	91%	28892	64%	**05	90%
Alliant AR-Comp	<<locked>>	81%	26890	60%	**63	95%
Alliant Reloder-10x	<<locked>>	81%	33953	76%	**33	97%
Baschieri & Pellagri 106	<<locked>>	81%	37318	83%	**04	96%
[Hodgdon Benchmark]*	<<locked>>	84%	35302	79%	**77	90%
[Hodgdon H322]*	<<locked>>	81%	30414	68%	**18	92%
[Hodgdon H335]*	<<locked>>	81%	35665	79%	**76	93%
Hodgdon TrailBoss	<<locked>>	81%	23859	53%	**24	100%
[IMR 3031]*	<<locked>>	85%	26818	60%	**46	90%
IMR 4198	<<locked>>	81%	35882	80%	**46	98%
[Lovex D073.4]*	<<locked>>	82%	34330	76%	**91	90%
[Lovex D073.5]*	<<locked>>	83%	33968	76%	**94	90%
[Lovex D073.6]*	<<locked>>	88%	31763	71%	**84	90%
[Norma 201]*	<<locked>>	91%	36898	82%	**76	90%
[Norma 202]*	<<locked>>	85%	30124	67%	**09	90%
ReloadSwiss RS 14	<<locked>>	81%	23424	52%	**60	100%
[ReloadSwiss RS 40]*	<<locked>>	81%	32793	73%	**68	90%
[Rottweil R 901]*	<<locked>>	83%	30748	68%	**99	90%
[Rottweil R 902]*	<<locked>>	93%	36883	82%	**63	90%
[SNPE Vectan SP 10]*	<<locked>>	81%	36854	82%	**02	93%
[SNPE Vectan Tubal 3000]*	<<locked>>	83%	30182	67%	**23	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	86%	27398	61%	**41	90%
[Shooters World Match Rifle]*	<<locked>>	88%	31763	71%	**84	90%
[Somchem S321]*	<<locked>>	86%	36564	81%	**89	90%
[Somchem S335]*	<<locked>>	81%	27862	62%	**61	90%
Vihtavuori N130	<<locked>>	81%	32010	71%	**09	96%
[Vihtavuori N133]*	<<locked>>	81%	26339	59%	**22	92%
[Vihtavuori N135]*	<<locked>>	89%	25280	56%	**51	90%
[Vihtavuori N140]*	<<locked>>	87%	29443	65%	**56	90%
[Vihtavuori N530]*	<<locked>>	87%	36898	82%	**92	90%
[Vihtavuori N540]*	<<locked>>	87%	30182	67%	**05	90%
[Winchester 748]*	<<locked>>	86%	35752	80%	**89	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.