Load data for .357 Auto Magnum + .358 | 105gr | Rim Rock TC 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 \| 105gr \| Rim Rock TC Cowboy
Manufacturer SKU:	#009
Bullet Weight:	105gr \| 6.8g
Bullet Diameter:	0.358" \| 9.09mm
Bullet Length:	0.525" \| 13.3mm
Caliber:	.357 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.248" \| 6.3mm
Shank Seated Depth:	0.248" \| 6.3mm
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_B10535_C511
Last updated:	2025-01-01

Load data for 94 loads in caliber .357 Auto Magnum with .358 | 105gr | Rim Rock TC Cowboy bullet and 47 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>>	85%	32169	87%	**29	97%
ADI APS 350	<<locked>>	66%	33112	90%	**40	100%
ADI APS 450	<<locked>>	66%	32039	87%	**57	100%
ADI AS 30	<<locked>>	68%	32851	89%	**16	100%
ADI AS 50N	<<locked>>	63%	31850	86%	**55	100%
Accurate No. 2	<<locked>>	66%	33141	90%	**63	100%
[Accurate No. 7]*	<<locked>>	67%	32300	87%	**72	89%
[Accurate No. 9]*	<<locked>>	74%	32024	87%	**65	83%
Accurate Solo 1000	<<locked>>	67%	33272	90%	**65	100%
Accurate Solo 1250	<<locked>>	71%	33069	89%	**17	100%
[Accurate TCM]*	<<locked>>	75%	32692	88%	**55	84%
[Alliant BLUE DOT]*	<<locked>>	87%	33040	89%	**78	88%
Alliant BULLSEYE	<<locked>>	62%	33185	90%	**99	100%
Alliant POWER PISTOL	<<locked>>	70%	32619	88%	**78	96%
Alliant UNIQUE	<<locked>>	70%	32068	87%	**86	100%
Baschieri & Pellagri 100	<<locked>>	67%	32590	88%	**55	100%
Hodgdon Clays	<<locked>>	63%	31952	86%	**37	100%
Hodgdon Universal	<<locked>>	64%	32329	87%	**24	100%
Hodgdon TrailBoss	<<locked>>	95%	17448	47%	**11	100%
[Lovex D037.1]*	<<locked>>	67%	32300	87%	**72	89%
[Lovex D037.2]*	<<locked>>	74%	32880	89%	**78	83%
Lovex S020	<<locked>>	65%	33098	89%	**57	100%
Maxam CSB 1	<<locked>>	73%	32198	87%	**04	100%
Maxam CSB 2	<<locked>>	69%	31981	86%	**98	100%
Maxam CSB 3	<<locked>>	69%	32547	88%	**72	100%
Maxam CSB 4	<<locked>>	67%	33112	90%	**65	100%
Maxam CSB 5	<<locked>>	63%	32880	89%	**99	100%
ReloadSwiss RS 14	<<locked>>	95%	16027	43%	**11	100%
ReloadSwiss RS 20	<<locked>>	71%	32634	88%	**86	100%
ReloadSwiss RS 24	<<locked>>	73%	33170	90%	**75	92%
Rottweil P 806	<<locked>>	76%	32967	89%	**88	100%
SNPE Vectan A0	<<locked>>	74%	33127	90%	**50	100%
SNPE Vectan BA 9	<<locked>>	66%	32648	88%	**14	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	77%	32126	87%	**86	100%
SNPE Vectan BA9 1/2	<<locked>>	67%	32227	87%	**11	100%
[Shooters World Heavy Pistol]*	<<locked>>	74%	32880	89%	**78	83%
[Shooters World Major Pistol]*	<<locked>>	67%	32300	87%	**72	89%
Somchem MP200	<<locked>>	64%	31923	86%	**63	100%
Somchem MS200	<<locked>>	70%	33141	90%	**63	100%
Vihtavuori 3N37 👍	<<locked>>	72%	33112	90%	**39	100%
Vihtavuori 3N38	<<locked>>	82%	32764	89%	**72	93%
Vihtavuori N105	<<locked>>	88%	31981	86%	**91	95%
Vihtavuori N320	<<locked>>	65%	32706	88%	**65	100%
Vihtavuori N32C Tin Star	<<locked>>	89%	32996	89%	**83	100%
Vihtavuori N330	<<locked>>	66%	32895	89%	**24	100%
Vihtavuori N340	<<locked>>	69%	32692	88%	**70	100%
Vihtavuori N350 👍	<<locked>>	74%	32097	87%	**09	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	16360	44%	**22	86%
ADI APS 350	<<locked>>	61%	29486	80%	**78	100%
ADI APS 450	<<locked>>	61%	28732	78%	**04	100%
ADI AS 30	<<locked>>	61%	27775	75%	**34	100%
ADI AS 50N	<<locked>>	61%	30110	81%	**16	100%
Accurate No. 2	<<locked>>	61%	27818	75%	**75	100%
[Accurate No. 7]*	<<locked>>	61%	26150	71%	**34	84%
[Accurate No. 9]*	<<locked>>	72%	29733	80%	**09	81%
Accurate Solo 1000	<<locked>>	61%	28297	77%	**76	100%
Accurate Solo 1250	<<locked>>	61%	25092	68%	**70	100%
[Accurate TCM]*	<<locked>>	69%	26760	72%	**40	80%
[Alliant BLUE DOT]*	<<locked>>	74%	22800	62%	**32	80%
Alliant BULLSEYE	<<locked>>	61%	31531	85%	**70	100%
Alliant POWER PISTOL	<<locked>>	61%	24642	67%	**01	92%
Alliant UNIQUE	<<locked>>	61%	24714	67%	**32	100%
Baschieri & Pellagri 100	<<locked>>	61%	27615	75%	**73	100%
Hodgdon Clays	<<locked>>	61%	30095	81%	**04	100%
Hodgdon Universal	<<locked>>	61%	29138	79%	**68	100%
Hodgdon TrailBoss	<<locked>>	61%	8543	23%	**8	100%
[Lovex D037.1]*	<<locked>>	61%	26150	71%	**34	84%
[Lovex D037.2]*	<<locked>>	71%	28950	78%	**96	81%
Lovex S020	<<locked>>	61%	29675	80%	**91	100%
Maxam CSB 1	<<locked>>	61%	23221	63%	**27	100%
Maxam CSB 2	<<locked>>	61%	25744	70%	**83	100%
Maxam CSB 3	<<locked>>	61%	26034	70%	**60	100%
Maxam CSB 4	<<locked>>	61%	28021	76%	**83	100%
Maxam CSB 5	<<locked>>	61%	31183	84%	**83	100%
ReloadSwiss RS 14	<<locked>>	61%	8006	22%	**9	99%
ReloadSwiss RS 20	<<locked>>	61%	23569	64%	**12	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	22292	60%	**29	84%
Rottweil P 806	<<locked>>	61%	18840	51%	**37	92%
SNPE Vectan A0	<<locked>>	61%	23250	63%	**57	100%
SNPE Vectan BA 9	<<locked>>	61%	28166	76%	**29	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	20146	54%	**11	95%
SNPE Vectan BA9 1/2	<<locked>>	61%	27688	75%	**39	100%
[Shooters World Heavy Pistol]*	<<locked>>	71%	28950	78%	**96	81%
[Shooters World Major Pistol]*	<<locked>>	61%	26150	71%	**34	84%
Somchem MP200	<<locked>>	61%	28979	78%	**21	100%
Somchem MS200	<<locked>>	61%	25686	69%	**22	100%
Vihtavuori 3N37	<<locked>>	61%	23699	64%	**32	98%
[Vihtavuori 3N38]*	<<locked>>	64%	18014	49%	**85	80%
[Vihtavuori N105]*	<<locked>>	67%	15708	42%	**62	81%
Vihtavuori N320	<<locked>>	61%	29153	79%	**09	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	17071	46%	**81	100%
Vihtavuori N330	<<locked>>	61%	27992	76%	**42	100%
Vihtavuori N340	<<locked>>	61%	24961	67%	**19	100%
Vihtavuori N350	<<locked>>	61%	21292	58%	**67	97%

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