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:	<<locked>>
Caliber:	.350 Mag. Rigby load data
Case Length (l3):	2.750" \| 69.8mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
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 0 loads in caliber .350 Mag. Rigby with .356 | 123gr | LOS FP bullet and 0 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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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 Benchmark 8208]*	<<locked>>	89%	40118	89%	**45	91%
Accurate 2015	<<locked>>	88%	40335	90%	**61	98%
[Accurate 2460]*	<<locked>>	86%	40118	89%	**45	93%
Accurate 2495	<<locked>>	93%	40292	90%	**46	98%
[Accurate 2520]*	<<locked>>	91%	40350	90%	**04	94%
Accurate 4064	<<locked>>	97%	37826	84%	**64	95%
Alliant AR-Comp 👍	<<locked>>	92%	40248	90%	**60	100%
Alliant Reloder-10x 👍	<<locked>>	85%	40118	89%	**87	99%
[Hodgdon Benchmark]*	<<locked>>	87%	40016	89%	**05	92%
Hodgdon H322	<<locked>>	88%	40248	90%	**94	96%
Hodgdon H335	<<locked>>	83%	40364	90%	**91	95%
Hodgdon TrailBoss	<<locked>>	96%	30676	68%	**01	100%
IMR 3031	<<locked>>	96%	40074	89%	**56	97%
IMR 4198	<<locked>>	84%	40321	90%	**58	99%
[IMR 8208 XBR]*	<<locked>>	89%	40118	89%	**45	91%
[Lovex D073.4]*	<<locked>>	85%	40016	89%	**32	93%
[Lovex D073.5]*	<<locked>>	86%	40147	89%	**51	93%
[Lovex D073.6]*	<<locked>>	94%	40350	90%	**04	94%
[Lovex S062]*	<<locked>>	96%	39943	89%	**61	92%
[Norma 201]*	<<locked>>	92%	39914	89%	**38	91%
Norma 202	<<locked>>	92%	39958	89%	**84	95%
ReloadSwiss RS 14	<<locked>>	96%	30719	68%	**54	100%
[ReloadSwiss RS 40]*	<<locked>>	85%	39871	89%	**45	93%
[Rottweil R 901]*	<<locked>>	89%	40001	89%	**45	94%
[Rottweil R 902]*	<<locked>>	94%	40176	89%	**35	91%
SNPE Vectan Tubal 3000	<<locked>>	90%	39900	89%	**82	95%
SNPE Vectan Tubal 5000	<<locked>>	97%	39856	89%	**92	96%
[Shooters World Match Rifle]*	<<locked>>	94%	40350	90%	**04	94%
[Shooters World Precision]*	<<locked>>	96%	39943	89%	**61	92%
[Somchem S321]*	<<locked>>	87%	40292	90%	**64	92%
Somchem S335	<<locked>>	91%	40466	90%	**22	96%
Vihtavuori N130	<<locked>>	87%	40176	89%	**15	98%
Vihtavuori N133	<<locked>>	93%	40350	90%	**25	98%
Vihtavuori N135	<<locked>>	97%	34476	77%	**43	95%
Vihtavuori N140	<<locked>>	95%	40263	90%	**64	95%
[Vihtavuori N530]*	<<locked>>	88%	40074	89%	**68	92%
Vihtavuori N540	<<locked>>	95%	40292	90%	**81	95%
[Winchester 748]*	<<locked>>	88%	40089	89%	**01	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI Benchmark 8208]*	<<locked>>	87%	37246	83%	**73	90%
Accurate 2015	<<locked>>	81%	32343	72%	**41	95%
[Accurate 2460]*	<<locked>>	81%	33910	75%	**84	90%
[Accurate 2495]*	<<locked>>	81%	26440	59%	**30	92%
[Accurate 2520]*	<<locked>>	85%	32401	72%	**97	90%
[Accurate 4064]*	<<locked>>	89%	28805	64%	**95	90%
Alliant AR-Comp	<<locked>>	81%	28442	63%	**05	96%
Alliant Reloder-10x	<<locked>>	81%	35621	79%	**59	97%
[Hodgdon Benchmark]*	<<locked>>	83%	35389	79%	**68	90%
[Hodgdon H322]*	<<locked>>	81%	31778	71%	**58	92%
[Hodgdon H335]*	<<locked>>	81%	37434	83%	**15	94%
Hodgdon TrailBoss	<<locked>>	81%	24381	54%	**28	100%
[IMR 3031]*	<<locked>>	83%	26963	60%	**36	90%
IMR 4198	<<locked>>	81%	37318	83%	**73	99%
[IMR 8208 XBR]*	<<locked>>	87%	37246	83%	**73	90%
[Lovex D073.4]*	<<locked>>	81%	35172	78%	**04	90%
[Lovex D073.5]*	<<locked>>	82%	34316	76%	**91	90%
[Lovex D073.6]*	<<locked>>	87%	32401	72%	**97	90%
[Lovex S062]*	<<locked>>	93%	36651	82%	**73	90%
[Norma 201]*	<<locked>>	90%	37057	82%	**69	90%
[Norma 202]*	<<locked>>	83%	29979	67%	**92	90%
ReloadSwiss RS 14	<<locked>>	81%	24163	54%	**67	100%
[ReloadSwiss RS 40]*	<<locked>>	81%	34432	77%	**97	91%
[Rottweil R 901]*	<<locked>>	81%	31270	70%	**95	90%
[Rottweil R 902]*	<<locked>>	91%	37072	82%	**59	90%
[SNPE Vectan Tubal 3000]*	<<locked>>	81%	30269	67%	**10	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	85%	27688	62%	**41	90%
[Shooters World Match Rifle]*	<<locked>>	87%	32401	72%	**97	90%
[Shooters World Precision]*	<<locked>>	93%	36651	82%	**73	90%
[Somchem S321]*	<<locked>>	84%	36521	81%	**66	90%
[Somchem S335]*	<<locked>>	81%	29457	66%	**10	91%
Vihtavuori N130	<<locked>>	81%	33576	75%	**45	97%
[Vihtavuori N133]*	<<locked>>	81%	27775	62%	**64	93%
[Vihtavuori N135]*	<<locked>>	87%	25411	57%	**38	90%
[Vihtavuori N140]*	<<locked>>	85%	29095	65%	**43	90%
[Vihtavuori N530]*	<<locked>>	85%	36999	82%	**86	90%
[Vihtavuori N540]*	<<locked>>	86%	30574	68%	**95	90%
[Winchester 748]*	<<locked>>	84%	35462	79%	**73	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