Load data for .350 Mag. Rigby + .357 | 158gr | MAGTECH FMJ FLAT

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

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| MAGTECH FMJ FLAT
Manufacturer SKU:	BU357D
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
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_B12276_C501
Last updated:	2026-03-05

Load data for 106 loads in caliber .350 Mag. Rigby with .357 | 158gr | MAGTECH FMJ FLAT bullet and 53 powders such as Accurate 2495, 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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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>>	87%	39958	89%	**46	93%
[ADI AR 2208]*	<<locked>>	92%	40132	89%	**20	92%
[ADI Benchmark 8208]*	<<locked>>	85%	40205	89%	**27	94%
Accurate 2015	<<locked>>	83%	40393	90%	**20	100%
Accurate 2495 👍	<<locked>>	88%	40147	89%	**95	99%
Accurate 2520	<<locked>>	87%	40451	90%	**82	97%
Accurate 4064	<<locked>>	94%	40248	90%	**95	98%
Alliant AR-Comp	<<locked>>	87%	40074	89%	**05	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	94%	40045	89%	**79	94%
[Alliant Reloder-15]*	<<locked>>	91%	40364	90%	**72	92%
[Alliant Reloder-17]*	<<locked>>	97%	39726	88%	**02	92%
[Bofors RP3]*	<<locked>>	94%	39914	89%	**86	94%
[Hodgdon BL-C2]*	<<locked>>	87%	40016	89%	**82	94%
Hodgdon Benchmark	<<locked>>	84%	40335	90%	**87	95%
Hodgdon H322	<<locked>>	84%	40408	90%	**66	98%
[Hodgdon H4895]*	<<locked>>	87%	40321	90%	**59	94%
[Hodgdon VARGET]*	<<locked>>	93%	40190	89%	**17	92%
Hodgdon TrailBoss	<<locked>>	96%	31894	71%	**46	100%
IMR 3031 👍	<<locked>>	92%	40437	90%	**31	99%
[IMR 4064]*	<<locked>>	93%	40074	89%	**20	92%
[IMR 4895]*	<<locked>>	90%	40147	89%	**89	93%
[IMR 8208 XBR]*	<<locked>>	85%	40205	89%	**27	94%
Lovex D073.6	<<locked>>	89%	40451	90%	**82	97%
[Lovex S060]*	<<locked>>	86%	40118	89%	**67	93%
Lovex S062	<<locked>>	91%	40176	89%	**43	95%
Norma 201	<<locked>>	88%	40350	90%	**30	95%
Norma 202	<<locked>>	88%	40030	89%	**53	97%
[Norma 203B]*	<<locked>>	91%	40205	89%	**79	93%
[Ramshot Big Game]*	<<locked>>	92%	40335	90%	**86	92%
[Ramshot Wild Boar]*	<<locked>>	86%	40205	89%	**59	93%
ReloadSwiss RS 14	<<locked>>	96%	31937	71%	**88	100%
[ReloadSwiss RS 52]*	<<locked>>	90%	40422	90%	**38	92%
ReloadSwiss RS 60	<<locked>>	95%	40147	89%	**41	95%
Rottweil R 901	<<locked>>	85%	40277	90%	**27	97%
Rottweil R 902	<<locked>>	90%	40234	89%	**20	95%
[Rottweil R 903]*	<<locked>>	96%	40306	90%	**86	94%
[SNPE Vectan SP 11]*	<<locked>>	95%	40422	90%	**86	92%
[SNPE Vectan SP 9]*	<<locked>>	88%	40422	90%	**46	93%
SNPE Vectan Tubal 3000	<<locked>>	86%	40393	90%	**71	97%
SNPE Vectan Tubal 5000	<<locked>>	92%	40001	89%	**71	98%
Shooters World Match Rifle	<<locked>>	89%	40451	90%	**82	97%
Shooters World Precision	<<locked>>	91%	40176	89%	**43	95%
Somchem S321	<<locked>>	83%	40089	89%	**49	95%
Somchem S335	<<locked>>	87%	40248	90%	**81	98%
[Somchem S341]*	<<locked>>	87%	40089	89%	**30	93%
[Somchem S355]*	<<locked>>	95%	40364	90%	**69	94%
Vihtavuori N133	<<locked>>	89%	40132	89%	**81	99%
Vihtavuori N135 👍	<<locked>>	97%	40176	89%	**59	99%
Vihtavuori N140	<<locked>>	90%	40030	89%	**27	98%
[Vihtavuori N150]*	<<locked>>	97%	35476	79%	**25	94%
Vihtavuori N530	<<locked>>	84%	40030	89%	**36	95%
Vihtavuori N540	<<locked>>	90%	39827	89%	**49	97%
Winchester 748	<<locked>>	84%	40277	90%	**92	96%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	82%	34026	76%	**92	90%
[ADI AR 2208]*	<<locked>>	89%	36767	82%	**31	90%
[ADI Benchmark 8208]*	<<locked>>	81%	34940	78%	**02	92%
Accurate 2015	<<locked>>	81%	37420	83%	**58	99%
Accurate 2495	<<locked>>	81%	31618	70%	**85	97%
[Accurate 2520]*	<<locked>>	81%	32532	72%	**85	94%
[Accurate 4064]*	<<locked>>	81%	26600	59%	**15	92%
Alliant AR-Comp	<<locked>>	81%	32982	73%	**35	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	86%	31270	70%	**43	90%
[Alliant Reloder-15]*	<<locked>>	87%	36013	80%	**61	90%
[Alliant Reloder-17]*	<<locked>>	94%	36448	81%	**13	90%
[Bofors RP3]*	<<locked>>	87%	30937	69%	**49	90%
[Hodgdon BL-C2]*	<<locked>>	81%	32895	73%	**02	91%
[Hodgdon Benchmark]*	<<locked>>	81%	37463	83%	**22	94%
Hodgdon H322	<<locked>>	81%	36651	82%	**77	97%
[Hodgdon H4895]*	<<locked>>	81%	33098	74%	**72	90%
[Hodgdon VARGET]*	<<locked>>	90%	36825	82%	**38	90%
Hodgdon TrailBoss	<<locked>>	81%	25193	56%	**81	100%
IMR 3031	<<locked>>	81%	28689	64%	**07	95%
[IMR 4064]*	<<locked>>	89%	35650	79%	**08	90%
[IMR 4895]*	<<locked>>	85%	33823	75%	**22	90%
[IMR 8208 XBR]*	<<locked>>	81%	34940	78%	**02	92%
[Lovex D073.6]*	<<locked>>	81%	30487	68%	**30	93%
[Lovex S060]*	<<locked>>	81%	34403	77%	**26	90%
[Lovex S062]*	<<locked>>	82%	30037	67%	**77	90%
[Norma 201]*	<<locked>>	81%	32256	72%	**20	91%
Norma 202	<<locked>>	81%	32155	72%	**49	95%
[Norma 203B]*	<<locked>>	86%	33910	75%	**15	90%
[Ramshot Big Game]*	<<locked>>	88%	36071	80%	**67	90%
[Ramshot Wild Boar]*	<<locked>>	82%	34563	77%	**12	90%
ReloadSwiss RS 14	<<locked>>	81%	25295	56%	**27	100%
[ReloadSwiss RS 52]*	<<locked>>	87%	36869	82%	**46	90%
[ReloadSwiss RS 60]*	<<locked>>	87%	31169	69%	**69	90%
Rottweil R 901	<<locked>>	81%	35882	80%	**12	96%
[Rottweil R 902]*	<<locked>>	81%	30574	68%	**67	90%
[Rottweil R 903]*	<<locked>>	90%	32401	72%	**82	90%
[SNPE Vectan SP 11]*	<<locked>>	91%	36143	80%	**77	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	34330	76%	**95	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	34301	76%	**26	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	27760	62%	**59	94%
[Shooters World Match Rifle]*	<<locked>>	81%	30487	68%	**30	93%
[Shooters World Precision]*	<<locked>>	82%	30037	67%	**77	90%
[Somchem S321]*	<<locked>>	81%	37115	83%	**77	94%
Somchem S335	<<locked>>	81%	33591	75%	**30	96%
[Somchem S341]*	<<locked>>	83%	34867	78%	**99	90%
[Somchem S355]*	<<locked>>	89%	32822	73%	**72	90%
Vihtavuori N133	<<locked>>	81%	31923	71%	**90	97%
[Vihtavuori N135]*	<<locked>>	81%	24511	55%	**26	93%
[Vihtavuori N140]*	<<locked>>	81%	29907	67%	**74	94%
[Vihtavuori N150]*	<<locked>>	90%	28790	64%	**41	90%
[Vihtavuori N530]*	<<locked>>	81%	36608	81%	**51	93%
[Vihtavuori N540]*	<<locked>>	81%	29602	66%	**74	93%
[Winchester 748]*	<<locked>>	81%	35911	80%	**84	94%

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.

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