Load data for .358 STA + .358 | 125gr | Rim Rock TC Cowboy

Recommended Powder(s): Accurate 2520, Hodgdon H322, IMR 3031, ReloadSwiss RS 40, Rottweil R 901

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.358 \| 125gr \| Rim Rock TC Cowboy
Manufacturer SKU:	#012
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.358" \| 9.09mm
Bullet Length:	<<locked>>
Caliber:	.358 STA load data
Case Length (l3):	2.847" \| 72.3mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	105.0 Grains of Water \| 6.82 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	65000 psi \| 4482 bar
LID:	LID_B10538_C527
Last updated:	2026-06-09

Load data for 172 loads in caliber .358 STA with .358 | 125gr | Rim Rock TC Cowboy bullet and 86 powders such as Accurate 2520, Hodgdon H322, IMR 3031, ReloadSwiss RS 40, Rottweil R 901. 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>>	96%	58291	90%	**34	97%
ADI AR 2207	<<locked>>	85%	58262	90%	**48	100%
ADI AR 2208	<<locked>>	97%	49995	77%	**40	95%
ADI AR 2219	<<locked>>	87%	57740	89%	**34	100%
ADI Benchmark 8208	<<locked>>	94%	57986	89%	**07	98%
Accurate 2015	<<locked>>	94%	57812	89%	**65	100%
Accurate 2200	<<locked>>	85%	57841	89%	**47	96%
Accurate 2230	<<locked>>	85%	58436	90%	**43	97%
Accurate 2460	<<locked>>	91%	58378	90%	**88	100%
Accurate 2495	<<locked>>	97%	51576	79%	**89	100%
Accurate 2520 👍	<<locked>>	94%	58175	89%	**24	100%
Accurate 4064	<<locked>>	97%	47964	74%	**50	99%
Alliant AR-Comp	<<locked>>	95%	57856	89%	**37	100%
Alliant Power Pro 2000-MR	<<locked>>	97%	56043	86%	**96	96%
Alliant Reloder- TS 15.5	<<locked>>	97%	48704	75%	**63	96%
Alliant Reloder-10x	<<locked>>	90%	58146	89%	**91	100%
Alliant Reloder-15	<<locked>>	97%	53098	82%	**58	96%
[Alliant Reloder-17]*	<<locked>>	97%	42975	66%	**81	93%
Alliant Reloder-7	<<locked>>	84%	58044	89%	**42	100%
Baschieri & Pellagri 106	<<locked>>	88%	58088	89%	**89	100%
Baschieri & Pellagri 107	<<locked>>	96%	58421	90%	**34	96%
Bofors RP3	<<locked>>	97%	48153	74%	**43	96%
Hodgdon BL-C2	<<locked>>	95%	58044	89%	**43	99%
Hodgdon Benchmark	<<locked>>	93%	57914	89%	**68	99%
Hodgdon CFE223	<<locked>>	92%	58334	90%	**32	97%
Hodgdon H322 👍	<<locked>>	90%	57740	89%	**34	100%
Hodgdon H335	<<locked>>	89%	57986	89%	**17	100%
[Hodgdon H380]*	<<locked>>	97%	50807	78%	**83	94%
Hodgdon H4198	<<locked>>	85%	58334	90%	**42	100%
Hodgdon H4895	<<locked>>	96%	58305	90%	**53	98%
Hodgdon VARGET	<<locked>>	97%	58001	89%	**11	98%
Hodgdon LEVERevolution	<<locked>>	97%	55114	85%	**37	98%
Hodgdon TrailBoss	<<locked>>	97%	31734	49%	**13	100%
IMR 3031 👍	<<locked>>	97%	58001	89%	**83	100%
IMR 4064	<<locked>>	97%	52518	81%	**89	96%
[IMR 4166 Enduron]*	<<locked>>	97%	57928	89%	**38	92%
IMR 4198	<<locked>>	90%	57783	89%	**61	100%
IMR 4895	<<locked>>	97%	54447	84%	**07	97%
IMR 8208 XBR	<<locked>>	94%	57986	89%	**07	98%
Lovex D073.4	<<locked>>	89%	58320	90%	**81	99%
Lovex D073.5	<<locked>>	90%	58247	90%	**88	99%
Lovex D073.6	<<locked>>	97%	58436	90%	**43	100%
Lovex S060	<<locked>>	96%	58479	90%	**65	97%
Lovex S062	<<locked>>	97%	51213	79%	**76	97%
Norma 200	<<locked>>	86%	58059	89%	**75	100%
Norma 201	<<locked>>	97%	57145	88%	**98	98%
Norma 202	<<locked>>	97%	58349	90%	**24	100%
Norma 203B	<<locked>>	97%	52083	80%	**29	96%
Ramshot Big Game	<<locked>>	97%	53243	82%	**58	96%
Ramshot TAC	<<locked>>	94%	57928	89%	**71	95%
Ramshot Wild Boar	<<locked>>	94%	58131	89%	**20	97%
Ramshot X-Terminator	<<locked>>	91%	58175	89%	**65	97%
ReloadSwiss RS 14	<<locked>>	96%	31488	48%	**52	100%
ReloadSwiss RS 40 👍	<<locked>>	91%	58334	90%	**11	99%
[ReloadSwiss RS 50]*	<<locked>>	97%	51996	80%	**50	92%
ReloadSwiss RS 52	<<locked>>	97%	56637	87%	**99	96%
ReloadSwiss RS 60	<<locked>>	97%	46180	71%	**02	98%
Rottweil R 901 👍	<<locked>>	95%	58363	90%	**98	100%
Rottweil R 902	<<locked>>	97%	54375	84%	**22	98%
Rottweil R 903	<<locked>>	97%	44701	69%	**68	95%
SNPE Vectan BA6 1/2	<<locked>>	86%	58001	89%	**66	100%
SNPE Vectan SP 10	<<locked>>	87%	58494	90%	**27	100%
SNPE Vectan SP 11	<<locked>>	97%	47442	73%	**43	95%
SNPE Vectan SP 3	<<locked>>	89%	58436	90%	**04	100%
SNPE Vectan SP 7	<<locked>>	95%	58407	90%	**81	95%
SNPE Vectan SP 9	<<locked>>	97%	58189	90%	**14	97%
SNPE Vectan Tubal 3000	<<locked>>	96%	58160	89%	**29	100%
SNPE Vectan Tubal 5000	<<locked>>	97%	49530	76%	**68	100%
Shooters World Match Rifle	<<locked>>	97%	58436	90%	**43	100%
Shooters World Precision	<<locked>>	97%	51213	79%	**76	97%
Shooters World Tactical Rifle	<<locked>>	88%	58102	89%	**68	98%
Somchem S321	<<locked>>	92%	58378	90%	**30	99%
Somchem S335	<<locked>>	96%	58088	89%	**38	100%
Somchem S341	<<locked>>	95%	58015	89%	**91	97%
Somchem S355	<<locked>>	97%	45556	70%	**74	95%
Vihtavuori N120	<<locked>>	85%	58276	90%	**83	100%
Vihtavuori N130	<<locked>>	92%	58291	90%	**25	100%
Vihtavuori N133	<<locked>>	96%	58494	90%	**32	100%
Vihtavuori N135	<<locked>>	97%	50038	77%	**60	100%
Vihtavuori N140	<<locked>>	97%	55376	85%	**22	100%
Vihtavuori N150	<<locked>>	97%	44295	68%	**12	96%
Vihtavuori N530	<<locked>>	94%	58175	89%	**01	99%
Vihtavuori N540	<<locked>>	97%	53737	83%	**02	99%
[Winchester 6.5 StaBALL]*	<<locked>>	97%	40785	63%	**84	93%
Winchester 748	<<locked>>	94%	58175	89%	**66	99%
Winchester StaBALL Match	<<locked>>	97%	58479	90%	**34	98%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	82%	35621	55%	**12	90%
ADI AR 2207	<<locked>>	81%	50691	78%	**24	100%
[ADI AR 2208]*	<<locked>>	88%	37652	58%	**38	90%
ADI AR 2219	<<locked>>	81%	46572	72%	**04	99%
[ADI Benchmark 8208]*	<<locked>>	81%	36680	56%	**28	93%
Accurate 2015	<<locked>>	81%	37420	58%	**35	98%
[Accurate 2200]*	<<locked>>	81%	49821	77%	**96	94%
Accurate 2230	<<locked>>	81%	50096	77%	**79	95%
Accurate 2460	<<locked>>	81%	40915	63%	**40	97%
Accurate 2495	<<locked>>	81%	28761	44%	**18	96%
Accurate 2520	<<locked>>	81%	36230	56%	**45	95%
[Accurate 4064]*	<<locked>>	81%	27180	42%	**76	91%
Alliant AR-Comp	<<locked>>	81%	34693	53%	**58	100%
[Alliant Power Pro 2000-MR]*	<<locked>>	88%	40944	63%	**32	90%
[Alliant Reloder- TS 15.5]*	<<locked>>	86%	33315	51%	**56	90%
Alliant Reloder-10x	<<locked>>	81%	42989	66%	**02	100%
[Alliant Reloder-15]*	<<locked>>	87%	37768	58%	**94	90%
[Alliant Reloder-17]*	<<locked>>	93%	37144	57%	**20	90%
Alliant Reloder-7	<<locked>>	81%	51764	80%	**30	100%
Baschieri & Pellagri 106	<<locked>>	81%	46427	71%	**76	99%
[Baschieri & Pellagri 107]*	<<locked>>	85%	39015	60%	**10	90%
[Bofors RP3]*	<<locked>>	86%	32895	51%	**53	90%
[Hodgdon BL-C2]*	<<locked>>	81%	34505	53%	**99	92%
[Hodgdon Benchmark]*	<<locked>>	81%	39030	60%	**51	94%
[Hodgdon CFE223]*	<<locked>>	81%	38537	59%	**66	90%
Hodgdon H322	<<locked>>	81%	42206	65%	**19	98%
Hodgdon H335	<<locked>>	81%	43163	66%	**22	98%
[Hodgdon H380]*	<<locked>>	92%	41742	64%	**56	90%
Hodgdon H4198	<<locked>>	81%	51967	80%	**37	100%
[Hodgdon H4895]*	<<locked>>	81%	34635	53%	**99	91%
[Hodgdon VARGET]*	<<locked>>	81%	34171	53%	**56	90%
[Hodgdon LEVERevolution]*	<<locked>>	83%	33547	52%	**96	90%
Hodgdon TrailBoss	<<locked>>	81%	24874	38%	**26	100%
IMR 3031	<<locked>>	81%	33185	51%	**22	96%
[IMR 4064]*	<<locked>>	87%	37347	57%	**38	90%
[IMR 4166 Enduron]*	<<locked>>	93%	50082	77%	**84	90%
IMR 4198	<<locked>>	81%	44150	68%	**09	100%
[IMR 4895]*	<<locked>>	85%	35810	55%	**41	90%
[IMR 8208 XBR]*	<<locked>>	81%	36680	56%	**28	93%
Lovex D073.4	<<locked>>	81%	43004	66%	**83	96%
Lovex D073.5	<<locked>>	81%	40799	63%	**23	95%
[Lovex D073.6]*	<<locked>>	81%	32227	50%	**40	93%
[Lovex S060]*	<<locked>>	81%	35824	55%	**53	90%
[Lovex S062]*	<<locked>>	83%	31908	49%	**84	90%
Norma 200	<<locked>>	81%	48457	75%	**94	100%
[Norma 201]*	<<locked>>	81%	33417	51%	**23	91%
[Norma 202]*	<<locked>>	81%	33620	52%	**59	94%
[Norma 203B]*	<<locked>>	86%	35505	55%	**25	90%
[Ramshot Big Game]*	<<locked>>	87%	36825	57%	**61	90%
[Ramshot TAC]*	<<locked>>	86%	43685	67%	**66	90%
[Ramshot Wild Boar]*	<<locked>>	81%	35940	55%	**25	90%
[Ramshot X-Terminator]*	<<locked>>	81%	40364	62%	**87	92%
ReloadSwiss RS 14	<<locked>>	81%	24714	38%	**69	100%
ReloadSwiss RS 40	<<locked>>	81%	41771	64%	**76	96%
[ReloadSwiss RS 50]*	<<locked>>	94%	46992	72%	**51	90%
[ReloadSwiss RS 52]*	<<locked>>	86%	38014	58%	**69	90%
[ReloadSwiss RS 60]*	<<locked>>	87%	32358	50%	**66	90%
Rottweil R 901	<<locked>>	81%	36535	56%	**22	95%
[Rottweil R 902]*	<<locked>>	81%	31720	49%	**61	90%
[Rottweil R 903]*	<<locked>>	89%	33678	52%	**69	90%
SNPE Vectan BA6 1/2	<<locked>>	81%	50821	78%	**58	100%
SNPE Vectan SP 10	<<locked>>	81%	47181	73%	**04	98%
[SNPE Vectan SP 11]*	<<locked>>	90%	36854	57%	**68	90%
SNPE Vectan SP 3	<<locked>>	81%	43903	68%	**32	99%
[SNPE Vectan SP 7]*	<<locked>>	86%	41771	64%	**33	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	36100	56%	**09	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	35621	55%	**50	95%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	28834	44%	**46	94%
[Shooters World Match Rifle]*	<<locked>>	81%	32227	50%	**40	93%
[Shooters World Precision]*	<<locked>>	83%	31908	49%	**84	90%
Shooters World Tactical Rifle	<<locked>>	81%	44512	68%	**92	95%
[Somchem S321]*	<<locked>>	81%	39639	61%	**27	94%
Somchem S335	<<locked>>	81%	34954	54%	**33	96%
[Somchem S341]*	<<locked>>	82%	36042	55%	**92	90%
[Somchem S355]*	<<locked>>	88%	34026	52%	**73	90%
Vihtavuori N120	<<locked>>	81%	50865	78%	**71	100%
Vihtavuori N130	<<locked>>	81%	40712	63%	**91	100%
Vihtavuori N133	<<locked>>	81%	35665	55%	**63	98%
Vihtavuori N135	<<locked>>	81%	28572	44%	**12	95%
[Vihtavuori N140]*	<<locked>>	81%	31792	49%	**87	94%
[Vihtavuori N150]*	<<locked>>	86%	30429	47%	**25	90%
[Vihtavuori N530]*	<<locked>>	81%	36506	56%	**22	93%
[Vihtavuori N540]*	<<locked>>	81%	30632	47%	**48	93%
[Winchester 6.5 StaBALL]*	<<locked>>	93%	35331	54%	**40	90%
[Winchester 748]*	<<locked>>	81%	35418	54%	**51	93%
[Winchester StaBALL Match]*	<<locked>>	82%	34258	53%	**86	90%

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