Load data for .350 Mag. Rigby + .358 | 158gr | Speer LSWC

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.358 \| 158gr \| Speer LSWC
Manufacturer SKU:	4623
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.358" \| 9.09mm
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_B6234_C501
Last updated:	2026-04-23

Load data for 122 loads in caliber .350 Mag. Rigby with .358 | 158gr | Speer LSWC bullet and 61 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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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>>	89%	40292	90%	**95	93%
[ADI AR 2208]*	<<locked>>	93%	40234	89%	**66	92%
ADI Benchmark 8208	<<locked>>	87%	40364	90%	**76	95%
Accurate 2015	<<locked>>	85%	40422	90%	**66	100%
[Accurate 2230]*	<<locked>>	83%	39958	89%	**49	94%
Accurate 2460	<<locked>>	84%	40306	90%	**72	96%
Accurate 2495 👍	<<locked>>	91%	40306	90%	**41	100%
Accurate 2520	<<locked>>	89%	40451	90%	**25	97%
Accurate 4064	<<locked>>	96%	39856	89%	**31	98%
Alliant AR-Comp	<<locked>>	88%	40045	89%	**35	100%
Alliant Reloder- TS 15.5	<<locked>>	95%	40118	89%	**18	95%
[Alliant Reloder-15]*	<<locked>>	92%	40393	90%	**18	93%
[Baschieri & Pellagri 107]*	<<locked>>	89%	40118	89%	**99	92%
Bofors RP3	<<locked>>	96%	40103	89%	**25	95%
Hodgdon BL-C2	<<locked>>	88%	40408	90%	**35	95%
Hodgdon Benchmark	<<locked>>	85%	40321	90%	**33	96%
[Hodgdon CFE223]*	<<locked>>	85%	40161	89%	**64	92%
Hodgdon H322 👍	<<locked>>	85%	40001	89%	**02	99%
[Hodgdon H4895]*	<<locked>>	88%	40030	89%	**02	94%
[Hodgdon VARGET]*	<<locked>>	92%	40059	89%	**82	94%
Hodgdon LEVERevolution	<<locked>>	94%	40379	90%	**58	95%
Hodgdon TrailBoss	<<locked>>	97%	30980	69%	**69	100%
IMR 3031 👍	<<locked>>	93%	40335	90%	**61	99%
[IMR 4064]*	<<locked>>	95%	40263	90%	**59	93%
[IMR 4895]*	<<locked>>	92%	40234	89%	**35	94%
IMR 8208 XBR	<<locked>>	87%	40364	90%	**76	95%
Lovex D073.5	<<locked>>	84%	40045	89%	**69	96%
Lovex D073.6	<<locked>>	91%	40451	90%	**25	97%
[Lovex S060]*	<<locked>>	87%	39958	89%	**10	93%
Lovex S062	<<locked>>	93%	40205	89%	**86	95%
Norma 201	<<locked>>	90%	39914	89%	**72	95%
Norma 202	<<locked>>	90%	40408	90%	**02	98%
[Norma 203B]*	<<locked>>	93%	40059	89%	**18	94%
[Ramshot Big Game]*	<<locked>>	93%	40190	89%	**18	93%
[Ramshot Wild Boar]*	<<locked>>	87%	40364	90%	**05	93%
[Ramshot X-Terminator]*	<<locked>>	84%	40205	89%	**33	93%
ReloadSwiss RS 14	<<locked>>	96%	30690	68%	**05	100%
[ReloadSwiss RS 52]*	<<locked>>	91%	40190	89%	**81	92%
ReloadSwiss RS 60	<<locked>>	96%	40132	89%	**91	96%
Rottweil R 901	<<locked>>	88%	40147	89%	**76	98%
Rottweil R 902	<<locked>>	92%	40437	90%	**66	95%
[Rottweil R 903]*	<<locked>>	97%	38479	86%	**82	94%
[SNPE Vectan SP 11]*	<<locked>>	95%	39987	89%	**25	93%
[SNPE Vectan SP 9]*	<<locked>>	90%	40306	90%	**92	93%
SNPE Vectan Tubal 3000	<<locked>>	88%	40132	89%	**10	98%
SNPE Vectan Tubal 5000	<<locked>>	94%	40205	89%	**17	99%
Shooters World Match Rifle	<<locked>>	91%	40451	90%	**25	97%
Shooters World Precision	<<locked>>	93%	40205	89%	**86	95%
Somchem S321	<<locked>>	85%	40030	89%	**92	96%
Somchem S335	<<locked>>	88%	40219	89%	**36	99%
[Somchem S341]*	<<locked>>	88%	40219	89%	**76	93%
[Somchem S355]*	<<locked>>	97%	40059	89%	**99	94%
Vihtavuori N130	<<locked>>	83%	40161	89%	**20	100%
Vihtavuori N133	<<locked>>	88%	40176	89%	**20	99%
Vihtavuori N135 👍	<<locked>>	94%	40408	90%	**99	99%
Vihtavuori N140	<<locked>>	91%	40292	90%	**76	98%
Vihtavuori N150	<<locked>>	97%	38841	86%	**40	95%
Vihtavuori N530	<<locked>>	87%	40059	89%	**66	95%
Vihtavuori N540	<<locked>>	92%	40335	90%	**89	98%
Winchester 748	<<locked>>	85%	40176	89%	**35	96%
[Winchester StaBALL Match]*	<<locked>>	83%	40379	90%	**09	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	83%	32967	73%	**08	90%
[ADI AR 2208]*	<<locked>>	89%	34809	77%	**35	90%
[ADI Benchmark 8208]*	<<locked>>	81%	33025	73%	**95	92%
Accurate 2015	<<locked>>	81%	34635	77%	**28	99%
[Accurate 2230]*	<<locked>>	81%	36767	82%	**74	93%
Accurate 2460	<<locked>>	81%	36100	80%	**77	95%
Accurate 2495	<<locked>>	81%	27499	61%	**10	96%
[Accurate 2520]*	<<locked>>	81%	29965	67%	**59	93%
[Accurate 4064]*	<<locked>>	81%	22843	51%	**36	90%
Alliant AR-Comp	<<locked>>	81%	30792	68%	**18	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	87%	29994	67%	**49	90%
[Alliant Reloder-15]*	<<locked>>	88%	34766	77%	**74	90%
[Baschieri & Pellagri 107]*	<<locked>>	86%	36680	82%	**10	90%
[Bofors RP3]*	<<locked>>	88%	29994	67%	**59	90%
[Hodgdon BL-C2]*	<<locked>>	81%	30690	68%	**82	91%
[Hodgdon Benchmark]*	<<locked>>	81%	35389	79%	**15	94%
[Hodgdon CFE223]*	<<locked>>	82%	35578	79%	**49	90%
Hodgdon H322	<<locked>>	81%	34795	77%	**74	97%
[Hodgdon H4895]*	<<locked>>	81%	31343	70%	**76	90%
[Hodgdon VARGET]*	<<locked>>	85%	31517	70%	**49	90%
[Hodgdon LEVERevolution]*	<<locked>>	87%	31415	70%	**02	90%
Hodgdon TrailBoss	<<locked>>	81%	24018	53%	**95	100%
[IMR 3031]*	<<locked>>	81%	26484	59%	**80	94%
[IMR 4064]*	<<locked>>	90%	34243	76%	**18	90%
[IMR 4895]*	<<locked>>	86%	32793	73%	**41	90%
[IMR 8208 XBR]*	<<locked>>	81%	33025	73%	**95	92%
Lovex D073.5	<<locked>>	81%	35810	80%	**71	95%
[Lovex D073.6]*	<<locked>>	81%	27876	62%	**97	92%
[Lovex S060]*	<<locked>>	81%	32837	73%	**33	90%
[Lovex S062]*	<<locked>>	84%	29254	65%	**97	90%
[Norma 201]*	<<locked>>	81%	29486	66%	**97	91%
[Norma 202]*	<<locked>>	81%	29805	66%	**26	94%
[Norma 203B]*	<<locked>>	87%	32692	73%	**28	90%
[Ramshot Big Game]*	<<locked>>	88%	34389	76%	**71	90%
[Ramshot Wild Boar]*	<<locked>>	82%	33127	74%	**18	90%
[Ramshot X-Terminator]*	<<locked>>	81%	36260	81%	**44	92%
ReloadSwiss RS 14	<<locked>>	81%	23786	53%	**34	100%
[ReloadSwiss RS 52]*	<<locked>>	88%	35534	79%	**63	90%
[ReloadSwiss RS 60]*	<<locked>>	88%	30139	67%	**79	90%
Rottweil R 901	<<locked>>	81%	32213	72%	**69	95%
[Rottweil R 902]*	<<locked>>	82%	29008	65%	**71	90%
[Rottweil R 903]*	<<locked>>	91%	30618	68%	**76	90%
[SNPE Vectan SP 11]*	<<locked>>	91%	34200	76%	**64	90%
[SNPE Vectan SP 9]*	<<locked>>	84%	33098	74%	**05	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	32126	71%	**13	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	25628	57%	**39	93%
[Shooters World Match Rifle]*	<<locked>>	81%	27876	62%	**97	92%
[Shooters World Precision]*	<<locked>>	84%	29254	65%	**97	90%
[Somchem S321]*	<<locked>>	81%	34969	78%	**64	94%
Somchem S335	<<locked>>	81%	31154	69%	**07	96%
[Somchem S341]*	<<locked>>	83%	33373	74%	**02	90%
[Somchem S355]*	<<locked>>	90%	31662	70%	**82	90%
Vihtavuori N130	<<locked>>	81%	37028	82%	**41	100%
Vihtavuori N133	<<locked>>	81%	32169	72%	**30	98%
[Vihtavuori N135]*	<<locked>>	81%	24903	55%	**85	94%
[Vihtavuori N140]*	<<locked>>	81%	28079	62%	**54	94%
[Vihtavuori N150]*	<<locked>>	88%	28108	63%	**57	90%
[Vihtavuori N530]*	<<locked>>	81%	32503	72%	**69	92%
[Vihtavuori N540]*	<<locked>>	81%	26832	60%	**25	92%
[Winchester 748]*	<<locked>>	81%	34113	76%	**81	94%
[Winchester StaBALL Match]*	<<locked>>	81%	36724	82%	**27	93%

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