Load data for .350 Mag. Rigby + .357 | 158gr | Sierra JSP FN

Recommended Powder(s): Accurate 2495, Hodgdon H322, IMR 3031, Vihtavuori N135

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| Sierra JSP FN
Manufacturer SKU:	8340
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.641" \| 16.3mm
Caliber:	.350 Mag. Rigby load data
Case Length (l3):	2.750" \| 69.8mm
Cartridge Length (C.O.L.):	3.269" \| 83.0mm
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_B5948_C501
Last updated:	2025-01-01

Load data for 104 loads in caliber .350 Mag. Rigby with .357 | 158gr | Sierra JSP FN bullet and 52 powders such as Accurate 2495, Hodgdon H322, IMR 3031, Vihtavuori N135. 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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Min z (%)
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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 2206H]*	<<locked>>	87%	40001	89%	**82	93%
[ADI AR 2208]*	<<locked>>	92%	40321	90%	**63	92%
Accurate 2015	<<locked>>	84%	40350	90%	**53	100%
Accurate 2495 👍	<<locked>>	89%	40422	90%	**28	100%
Accurate 2520	<<locked>>	87%	40001	89%	**05	97%
Accurate 4064	<<locked>>	94%	40451	90%	**28	98%
Alliant AR-Comp	<<locked>>	87%	40234	89%	**31	100%
Alliant Reloder- TS 15.5	<<locked>>	94%	40466	90%	**09	95%
[Alliant Reloder-15]*	<<locked>>	91%	40176	89%	**05	93%
[Alliant Reloder-17]*	<<locked>>	97%	39668	88%	**41	93%
[Baschieri & Pellagri 107]*	<<locked>>	88%	40306	90%	**86	92%
Hodgdon BL-C2	<<locked>>	87%	40205	89%	**12	95%
Hodgdon Benchmark	<<locked>>	84%	40437	90%	**27	96%
Hodgdon H322 👍	<<locked>>	84%	40161	89%	**95	99%
[Hodgdon VARGET]*	<<locked>>	92%	40001	89%	**49	92%
Hodgdon TrailBoss	<<locked>>	96%	31328	70%	**62	100%
IMR 3031 👍	<<locked>>	91%	39958	89%	**41	99%
[IMR 4064]*	<<locked>>	93%	40437	90%	**56	93%
[IMR 4895]*	<<locked>>	90%	40059	89%	**12	93%
IMR 8208 XBR	<<locked>>	85%	40045	89%	**59	95%
Lovex D073.6	<<locked>>	89%	40001	89%	**05	97%
[Lovex S060]*	<<locked>>	86%	40176	89%	**07	93%
Lovex S062	<<locked>>	91%	40045	89%	**76	95%
Norma 201	<<locked>>	88%	40059	89%	**56	95%
Norma 202	<<locked>>	88%	40161	89%	**89	98%
[Norma 203B]*	<<locked>>	92%	40306	90%	**05	93%
[Ramshot Big Game]*	<<locked>>	91%	40451	90%	**18	93%
[Ramshot Wild Boar]*	<<locked>>	86%	40074	89%	**82	93%
ReloadSwiss RS 14	<<locked>>	96%	31459	70%	**11	100%
ReloadSwiss RS 52	<<locked>>	92%	40001	89%	**48	96%
[ReloadSwiss RS 60]*	<<locked>>	97%	38609	86%	**12	93%
Rottweil R 901	<<locked>>	85%	40089	89%	**59	97%
Rottweil R 902	<<locked>>	90%	40422	90%	**56	95%
[Rottweil R 903]*	<<locked>>	96%	40321	90%	**12	94%
[SNPE Vectan SP 11]*	<<locked>>	94%	40205	89%	**15	93%
[SNPE Vectan SP 9]*	<<locked>>	88%	40437	90%	**89	93%
SNPE Vectan Tubal 3000	<<locked>>	86%	40306	90%	**04	98%
SNPE Vectan Tubal 5000	<<locked>>	93%	40277	90%	**10	99%
Shooters World Match Rifle	<<locked>>	89%	40001	89%	**05	97%
Shooters World Precision	<<locked>>	91%	40045	89%	**76	95%
Somchem S321	<<locked>>	83%	40451	90%	**82	95%
Somchem S335	<<locked>>	87%	40089	89%	**10	98%
[Somchem S341]*	<<locked>>	87%	40364	90%	**72	93%
[Somchem S355]*	<<locked>>	95%	40074	89%	**92	94%
Vihtavuori N133	<<locked>>	89%	40103	89%	**20	100%
Vihtavuori N135 👍	<<locked>>	97%	40147	89%	**86	99%
Vihtavuori N140	<<locked>>	90%	40001	89%	**56	98%
[Vihtavuori N150]*	<<locked>>	97%	35447	79%	**61	94%
Vihtavuori N530	<<locked>>	84%	40335	90%	**82	95%
Vihtavuori N540	<<locked>>	90%	39900	89%	**79	98%
[Winchester 6.5 StaBALL]*	<<locked>>	97%	37942	84%	**77	92%
Winchester 748	<<locked>>	84%	40306	90%	**31	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	81%	32996	73%	**99	90%
[ADI AR 2208]*	<<locked>>	88%	35447	79%	**35	90%
Accurate 2015	<<locked>>	81%	36796	82%	**67	99%
Accurate 2495	<<locked>>	81%	30240	67%	**79	97%
[Accurate 2520]*	<<locked>>	81%	32053	71%	**02	94%
[Accurate 4064]*	<<locked>>	81%	25295	56%	**02	92%
Alliant AR-Comp	<<locked>>	81%	32590	72%	**58	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	85%	30226	67%	**49	90%
[Alliant Reloder-15]*	<<locked>>	87%	34780	77%	**64	90%
[Alliant Reloder-17]*	<<locked>>	93%	34809	77%	**07	90%
[Baschieri & Pellagri 107]*	<<locked>>	85%	36463	81%	**97	90%
[Hodgdon BL-C2]*	<<locked>>	81%	32576	72%	**18	92%
Hodgdon Benchmark	<<locked>>	81%	37072	82%	**41	95%
Hodgdon H322	<<locked>>	81%	36434	81%	**97	98%
[Hodgdon VARGET]*	<<locked>>	88%	35244	78%	**35	90%
Hodgdon TrailBoss	<<locked>>	81%	24845	55%	**08	100%
IMR 3031	<<locked>>	81%	28268	63%	**33	95%
[IMR 4064]*	<<locked>>	88%	34127	76%	**05	90%
[IMR 4895]*	<<locked>>	84%	32851	73%	**22	90%
[IMR 8208 XBR]*	<<locked>>	81%	34766	77%	**25	93%
[Lovex D073.6]*	<<locked>>	81%	30023	67%	**49	93%
[Lovex S060]*	<<locked>>	81%	33997	76%	**46	91%
[Lovex S062]*	<<locked>>	82%	29269	65%	**84	90%
[Norma 201]*	<<locked>>	81%	31575	70%	**40	92%
Norma 202	<<locked>>	81%	31560	70%	**66	95%
[Norma 203B]*	<<locked>>	86%	32706	73%	**18	90%
[Ramshot Big Game]*	<<locked>>	87%	34287	76%	**61	90%
[Ramshot Wild Boar]*	<<locked>>	81%	33489	74%	**12	90%
ReloadSwiss RS 14	<<locked>>	81%	24613	55%	**41	100%
[ReloadSwiss RS 52]*	<<locked>>	84%	29182	65%	**43	90%
[ReloadSwiss RS 60]*	<<locked>>	93%	34113	76%	**81	90%
Rottweil R 901	<<locked>>	81%	34708	77%	**18	96%
[Rottweil R 902]*	<<locked>>	81%	29907	67%	**77	90%
[Rottweil R 903]*	<<locked>>	89%	30603	68%	**62	90%
[SNPE Vectan SP 11]*	<<locked>>	90%	34171	76%	**58	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	32953	73%	**92	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	33852	75%	**46	96%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	27238	61%	**72	94%
[Shooters World Match Rifle]*	<<locked>>	81%	30023	67%	**49	93%
[Shooters World Precision]*	<<locked>>	82%	29269	65%	**84	90%
[Somchem S321]*	<<locked>>	81%	36854	82%	**00	94%
Somchem S335	<<locked>>	81%	33054	74%	**46	96%
[Somchem S341]*	<<locked>>	82%	33359	74%	**92	90%
[Somchem S355]*	<<locked>>	88%	31517	70%	**69	90%
Vihtavuori N133	<<locked>>	81%	31560	70%	**07	98%
[Vihtavuori N135]*	<<locked>>	81%	23685	53%	**26	93%
[Vihtavuori N140]*	<<locked>>	81%	29457	66%	**87	94%
[Vihtavuori N150]*	<<locked>>	90%	27862	62%	**44	90%
[Vihtavuori N530]*	<<locked>>	81%	36361	81%	**84	94%
[Vihtavuori N540]*	<<locked>>	81%	29240	65%	**00	94%
[Winchester 6.5 StaBALL]*	<<locked>>	94%	33881	75%	**76	90%
Winchester 748	<<locked>>	81%	35810	80%	**10	95%

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.