Load data for .357 Auto Magnum + .358 | 130gr | Rim Rock RNFP Cowboy

Recommended Powder(s): SNPE Vectan BA7 1/2, Vihtavuori 3N37, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.358 \| 130gr \| Rim Rock RNFP Cowboy
Manufacturer SKU:	#013
Bullet Weight:	130gr \| 8.4g
Bullet Diameter:	0.358" \| 9.09mm
Bullet Length:	0.566" \| 14.4mm
Caliber:	.357 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.336" \| 33.9mm
Seated Depth:	0.529" \| 13.4mm
Shank Seated Depth:	0.529" \| 13.4mm
Case Capacity:	35.0 Grains of Water \| 2.27 cm³
Primer Size:	Small Pistol Magnum (SPM)
Max. allowed Pressure:	36985 psi \| 2550 bar
LID:	LID_B10539_C511
Last updated:	2025-01-01

Load data for 98 loads in caliber .357 Auto Magnum with .358 | 130gr | Rim Rock RNFP Cowboy bullet and 49 powders such as SNPE Vectan BA7 1/2, Vihtavuori 3N37, Vihtavuori N350. 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 AP 100	<<locked>>	88%	32343	87%	**12	98%
ADI APS 350	<<locked>>	65%	31531	85%	**98	100%
ADI APS 450	<<locked>>	67%	31952	86%	**37	100%
ADI AS 30	<<locked>>	68%	31589	85%	**76	100%
ADI AS 50N	<<locked>>	64%	31183	84%	**12	100%
Accurate No. 2	<<locked>>	68%	33272	90%	**30	100%
Accurate No. 7	<<locked>>	70%	33199	90%	**78	91%
[Accurate No. 9]*	<<locked>>	77%	31778	86%	**42	84%
Accurate Solo 1000	<<locked>>	67%	31850	86%	**06	100%
Accurate Solo 1250	<<locked>>	71%	31473	85%	**62	100%
[Accurate TCM]*	<<locked>>	77%	32880	89%	**45	86%
Alliant BLUE DOT	<<locked>>	90%	32764	89%	**62	90%
Alliant BULLSEYE	<<locked>>	63%	32314	87%	**44	100%
Alliant POWER PISTOL	<<locked>>	72%	32648	88%	**58	98%
Alliant UNIQUE	<<locked>>	71%	31314	85%	**37	100%
Baschieri & Pellagri 100	<<locked>>	69%	32271	87%	**22	100%
Hodgdon Clays	<<locked>>	65%	32097	87%	**20	100%
Hodgdon Universal	<<locked>>	65%	31299	85%	**75	100%
Hodgdon TrailBoss	<<locked>>	97%	16998	46%	**33	100%
Lovex D037.1	<<locked>>	70%	33199	90%	**78	91%
[Lovex D037.2]*	<<locked>>	77%	32692	88%	**58	85%
Lovex S020	<<locked>>	66%	32474	88%	**07	100%
Maxam CSB 1	<<locked>>	75%	31937	86%	**65	100%
Maxam CSB 2	<<locked>>	71%	32184	87%	**71	100%
Maxam CSB 3	<<locked>>	71%	33083	89%	**55	100%
Maxam CSB 4	<<locked>>	69%	32938	89%	**35	100%
Maxam CSB 5	<<locked>>	64%	32329	87%	**73	100%
[Ramshot Enforcer]*	<<locked>>	88%	31720	86%	**78	82%
ReloadSwiss RS 14	<<locked>>	93%	14460	39%	**10	100%
ReloadSwiss RS 20	<<locked>>	73%	31821	86%	**40	100%
ReloadSwiss RS 24	<<locked>>	74%	32068	87%	**39	93%
Rottweil P 806	<<locked>>	80%	33156	90%	**75	100%
SNPE Vectan A0	<<locked>>	75%	32474	88%	**11	100%
SNPE Vectan BA 9	<<locked>>	67%	31604	85%	**75	100%
SNPE Vectan BA10	<<locked>>	64%	33040	89%	**53	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	80%	32808	89%	**76	100%
SNPE Vectan BA9 1/2	<<locked>>	68%	32024	87%	**85	100%
[Shooters World Heavy Pistol]*	<<locked>>	77%	32692	88%	**58	85%
Shooters World Major Pistol	<<locked>>	70%	33199	90%	**78	91%
Somchem MP200	<<locked>>	68%	33040	89%	**63	100%
Somchem MS200	<<locked>>	70%	31865	86%	**17	100%
Vihtavuori 3N37 👍	<<locked>>	73%	32314	87%	**93	100%
Vihtavuori 3N38	<<locked>>	86%	33083	89%	**55	94%
Vihtavuori N105	<<locked>>	92%	32300	87%	**91	97%
Vihtavuori N320	<<locked>>	66%	32430	88%	**35	100%
Vihtavuori N32C Tin Star	<<locked>>	89%	31299	85%	**43	100%
Vihtavuori N330	<<locked>>	68%	32518	88%	**98	100%
Vihtavuori N340	<<locked>>	70%	31488	85%	**14	100%
Vihtavuori N350 👍	<<locked>>	76%	31546	85%	**76	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	15214	41%	**15	86%
ADI APS 350	<<locked>>	62%	29196	79%	**65	100%
ADI APS 450	<<locked>>	61%	27572	75%	**75	100%
ADI AS 30	<<locked>>	62%	27093	73%	**07	100%
ADI AS 50N	<<locked>>	61%	28979	78%	**86	100%
Accurate No. 2	<<locked>>	61%	26440	72%	**25	100%
[Accurate No. 7]*	<<locked>>	61%	23786	64%	**81	85%
[Accurate No. 9]*	<<locked>>	72%	27093	73%	**40	81%
Accurate Solo 1000	<<locked>>	62%	27456	74%	**43	100%
Accurate Solo 1250	<<locked>>	61%	23467	63%	**37	100%
[Accurate TCM]*	<<locked>>	70%	25077	68%	**07	81%
[Alliant BLUE DOT]*	<<locked>>	74%	21234	57%	**06	81%
Alliant BULLSEYE	<<locked>>	61%	30066	81%	**14	100%
Alliant POWER PISTOL	<<locked>>	61%	22568	61%	**48	93%
Alliant UNIQUE	<<locked>>	61%	23859	64%	**12	100%
Baschieri & Pellagri 100	<<locked>>	61%	26005	70%	**27	100%
Hodgdon Clays	<<locked>>	62%	29675	80%	**84	100%
Hodgdon Universal	<<locked>>	60%	27267	74%	**12	100%
Hodgdon TrailBoss	<<locked>>	60%	7963	22%	**8	100%
[Lovex D037.1]*	<<locked>>	61%	23786	64%	**81	85%
[Lovex D037.2]*	<<locked>>	71%	26440	71%	**40	81%
Lovex S020	<<locked>>	61%	28065	76%	**52	100%
Maxam CSB 1	<<locked>>	62%	22365	60%	**14	100%
Maxam CSB 2	<<locked>>	61%	24091	65%	**43	100%
Maxam CSB 3	<<locked>>	61%	24787	67%	**34	100%
Maxam CSB 4	<<locked>>	60%	26368	71%	**37	100%
Maxam CSB 5	<<locked>>	61%	30110	81%	**40	100%
[Ramshot Enforcer]*	<<locked>>	85%	28660	77%	**12	80%
ReloadSwiss RS 14	<<locked>>	61%	7629	21%	**1	100%
ReloadSwiss RS 20	<<locked>>	61%	22423	61%	**83	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	20131	54%	**86	84%
Rottweil P 806	<<locked>>	61%	16868	46%	**37	93%
SNPE Vectan A0	<<locked>>	61%	21654	59%	**24	100%
SNPE Vectan BA 9	<<locked>>	60%	26034	70%	**80	100%
SNPE Vectan BA10	<<locked>>	61%	30763	83%	**17	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	18927	51%	**04	96%
SNPE Vectan BA9 1/2	<<locked>>	61%	26136	71%	**93	100%
[Shooters World Heavy Pistol]*	<<locked>>	71%	26440	71%	**40	81%
[Shooters World Major Pistol]*	<<locked>>	61%	23786	64%	**81	85%
Somchem MP200	<<locked>>	61%	27456	74%	**68	100%
Somchem MS200	<<locked>>	61%	24294	66%	**86	100%
Vihtavuori 3N37	<<locked>>	61%	22075	60%	**02	98%
[Vihtavuori 3N38]*	<<locked>>	63%	16128	44%	**71	81%
[Vihtavuori N105]*	<<locked>>	66%	13938	38%	**52	82%
Vihtavuori N320	<<locked>>	61%	27949	76%	**66	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	16273	44%	**7	100%
Vihtavuori N330	<<locked>>	61%	26179	71%	**99	100%
Vihtavuori N340	<<locked>>	61%	23656	64%	**86	100%
Vihtavuori N350	<<locked>>	61%	19783	53%	**47	98%

Start Load - Barrel Length: 5.50''

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