Load data for .45 Win. Mag. + .452 | 160gr | Rim Rock RNFP Cowboy

Recommended Powder(s): Alliant BULLSEYE, Alliant UNIQUE, Ramshot Silhouette, ReloadSwiss RS 20, Somchem MS200

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.452 \| 160gr \| Rim Rock RNFP Cowboy
Manufacturer SKU:	#027
Bullet Weight:	160gr \| 10.4g
Bullet Diameter:	0.452" \| 11.48mm
Bullet Length:	0.443" \| 11.3mm
Caliber:	.45 Win. Mag. load data
Case Length (l3):	1.198" \| 30.4mm
Cartridge Length (C.O.L.):	1.262" \| 32.0mm
Seated Depth:	0.379" \| 9.6mm
Shank Seated Depth:	0.379" \| 9.6mm
Case Capacity:	38.0 Grains of Water \| 2.47 cm³
Primer Size:	Small Pistol Magnum (SPM)
Max. allowed Pressure:	39885 psi \| 2750 bar
LID:	LID_B10652_C740
Last updated:	2025-01-01

Load data for 108 loads in caliber .45 Win. Mag. with .452 | 160gr | Rim Rock RNFP Cowboy bullet and 54 powders such as Alliant BULLSEYE, Alliant UNIQUE, Ramshot Silhouette, ReloadSwiss RS 20, Somchem MS200. 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>>	95%	23612	59%	**81	85%
ADI AP 70N	<<locked>>	78%	35230	88%	**32	100%
ADI APS 350	<<locked>>	79%	33649	84%	**89	100%
ADI APS 450	<<locked>>	84%	35636	89%	**58	100%
ADI AS 30	<<locked>>	87%	35331	89%	**17	100%
ADI AS 50N	<<locked>>	84%	35172	88%	**70	100%
Accurate No. 2	<<locked>>	84%	34505	87%	**16	99%
Accurate No. 5	<<locked>>	71%	35882	90%	**17	94%
Accurate Solo 1000	<<locked>>	85%	34809	87%	**40	100%
Accurate Solo 1250	<<locked>>	93%	35215	88%	**12	100%
Alliant BULLSEYE 👍	<<locked>>	81%	35186	88%	**85	100%
Alliant POWER PISTOL	<<locked>>	94%	35737	90%	**67	91%
Alliant UNIQUE 👍	<<locked>>	95%	35897	90%	**08	100%
Baschieri & Pellagri 100	<<locked>>	88%	35476	89%	**57	100%
Hodgdon Clays	<<locked>>	79%	34011	85%	**12	100%
Hodgdon HP38	<<locked>>	65%	34606	87%	**86	100%
Hodgdon HS-6	<<locked>>	76%	35012	88%	**88	96%
Hodgdon Longshot	<<locked>>	73%	34925	88%	**91	97%
Hodgdon Universal	<<locked>>	86%	35230	88%	**32	100%
Hodgdon TrailBoss	<<locked>>	97%	10689	27%	**5	100%
Lovex D036	<<locked>>	71%	35824	90%	**17	94%
Lovex S011	<<locked>>	74%	34795	87%	**67	100%
Lovex S020	<<locked>>	84%	34490	86%	**39	100%
Maxam CSB 1	<<locked>>	96%	34548	87%	**03	100%
Maxam CSB 2	<<locked>>	95%	35259	88%	**35	100%
Maxam CSB 3	<<locked>>	90%	34548	87%	**80	100%
Maxam CSB 4	<<locked>>	88%	35766	90%	**70	100%
Maxam CSB 5	<<locked>>	80%	34243	86%	**88	100%
Ramshot Silhouette 👍	<<locked>>	77%	34577	87%	**75	100%
Ramshot True Blue	<<locked>>	71%	34534	87%	**81	97%
Ramshot Zip	<<locked>>	66%	35157	88%	**96	100%
ReloadSwiss RS 12	<<locked>>	83%	35737	90%	**22	100%
ReloadSwiss RS 14	<<locked>>	95%	9181	23%	**2	97%
ReloadSwiss RS 20 👍	<<locked>>	96%	34737	87%	**88	100%
[ReloadSwiss RS 24]*	<<locked>>	96%	34722	87%	**21	84%
Rottweil P 801	<<locked>>	76%	35070	88%	**67	100%
Rottweil P 806	<<locked>>	96%	25831	65%	**49	93%
SNPE Vectan A0	<<locked>>	96%	35070	88%	**26	100%
SNPE Vectan BA 9	<<locked>>	86%	35099	88%	**06	100%
SNPE Vectan BA10	<<locked>>	77%	34476	86%	**45	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	30110	75%	**93	95%
SNPE Vectan BA9 1/2	<<locked>>	88%	34954	88%	**19	100%
Shooters World Auto Pistol	<<locked>>	71%	35824	90%	**17	94%
Somchem MP200	<<locked>>	85%	34737	87%	**65	100%
Somchem MS200 👍	<<locked>>	91%	34882	87%	**45	100%
[Somchem S221]*	<<locked>>	81%	35027	88%	**14	88%
Vihtavuori 3N37	<<locked>>	96%	35839	90%	**24	98%
Vihtavuori N310	<<locked>>	69%	34156	86%	**52	100%
Vihtavuori N320	<<locked>>	83%	33431	84%	**50	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	24047	60%	**40	100%
Vihtavuori N330	<<locked>>	88%	35607	89%	**42	100%
Vihtavuori N340	<<locked>>	90%	34185	86%	**45	100%
Vihtavuori N350	<<locked>>	95%	32372	81%	**65	97%
Winchester 231	<<locked>>	72%	34113	86%	**86	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	87%	19145	48%	**80	81%
ADI AP 70N	<<locked>>	61%	21625	54%	**06	100%
ADI APS 350	<<locked>>	60%	21683	54%	**15	100%
ADI APS 450	<<locked>>	61%	20682	52%	**32	100%
ADI AS 30	<<locked>>	62%	18913	47%	**52	100%
ADI AS 50N	<<locked>>	61%	19479	49%	**04	100%
Accurate No. 2	<<locked>>	61%	17143	43%	**81	92%
[Accurate No. 5]*	<<locked>>	61%	25077	63%	**24	88%
Accurate Solo 1000	<<locked>>	61%	19043	48%	**75	100%
Accurate Solo 1250	<<locked>>	61%	14562	37%	**12	97%
Alliant BULLSEYE	<<locked>>	61%	20102	50%	**89	97%
[Alliant POWER PISTOL]*	<<locked>>	74%	20233	51%	**42	81%
Alliant UNIQUE	<<locked>>	61%	14373	36%	**45	92%
Baschieri & Pellagri 100	<<locked>>	61%	16795	42%	**42	100%
Hodgdon Clays	<<locked>>	60%	21799	55%	**35	100%
Hodgdon HP38	<<locked>>	61%	30676	77%	**34	100%
[Hodgdon HS-6]*	<<locked>>	61%	20914	52%	**19	88%
Hodgdon Longshot	<<locked>>	61%	23032	58%	**71	92%
Hodgdon Universal	<<locked>>	61%	17724	44%	**14	99%
Hodgdon TrailBoss	<<locked>>	61%	5207	13%	**5	93%
[Lovex D036]*	<<locked>>	61%	25034	63%	**21	88%
Lovex S011	<<locked>>	61%	23511	59%	**96	100%
Lovex S020	<<locked>>	61%	16578	42%	**94	96%
Maxam CSB 1	<<locked>>	61%	14054	35%	**93	97%
Maxam CSB 2	<<locked>>	61%	13750	34%	**29	100%
Maxam CSB 3	<<locked>>	62%	16708	42%	**58	100%
Maxam CSB 4	<<locked>>	61%	18318	46%	**81	100%
Maxam CSB 5	<<locked>>	61%	20900	52%	**88	100%
Ramshot Silhouette	<<locked>>	61%	21176	53%	**22	95%
Ramshot True Blue	<<locked>>	61%	24192	61%	**91	93%
Ramshot Zip	<<locked>>	61%	29515	74%	**21	100%
ReloadSwiss RS 12	<<locked>>	61%	18681	47%	**43	100%
[ReloadSwiss RS 14]*	<<locked>>	60%	4728	12%	**9	86%
ReloadSwiss RS 20	<<locked>>	61%	12763	32%	**09	92%
[ReloadSwiss RS 24]*	<<locked>>	89%	28456	71%	**06	80%
Rottweil P 801	<<locked>>	61%	22727	57%	**86	100%
[Rottweil P 806]*	<<locked>>	78%	13924	35%	**40	80%
SNPE Vectan A0	<<locked>>	61%	14243	36%	**93	91%
SNPE Vectan BA 9	<<locked>>	61%	17376	44%	**75	98%
SNPE Vectan BA10	<<locked>>	61%	23090	58%	**78	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	66%	13373	34%	**83	80%
SNPE Vectan BA9 1/2	<<locked>>	61%	16534	41%	**75	99%
[Shooters World Auto Pistol]*	<<locked>>	61%	25034	63%	**21	88%
Somchem MP200	<<locked>>	61%	17274	43%	**17	93%
Somchem MS200	<<locked>>	61%	15925	40%	**61	94%
[Somchem S221]*	<<locked>>	69%	23902	60%	**98	81%
[Vihtavuori 3N37]*	<<locked>>	61%	12763	32%	**99	81%
Vihtavuori N310	<<locked>>	61%	27383	69%	**66	100%
Vihtavuori N320	<<locked>>	60%	17405	44%	**81	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	9834	25%	**5	100%
Vihtavuori N330	<<locked>>	61%	15592	39%	**81	99%
Vihtavuori N340	<<locked>>	61%	14779	37%	**38	93%
[Vihtavuori N350]*	<<locked>>	63%	12314	31%	**83	81%
Winchester 231	<<locked>>	61%	23743	60%	**25	100%

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