Load data for .45 Auto Rim + .452 | 180gr | Rim Rock RNFP Cowboy

Recommended Powder(s): Maxam CSB 2, Maxam CSB 3

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.452 \| 180gr \| Rim Rock RNFP Cowboy
Manufacturer SKU:	#028
Bullet Weight:	180gr \| 11.7g
Bullet Diameter:	0.452" \| 11.48mm
Bullet Length:	0.501" \| 12.7mm
Caliber:	.45 Auto Rim load data
Case Length (l3):	0.898" \| 22.8mm
Cartridge Length (C.O.L.):	1.039" \| 26.4mm
Seated Depth:	0.360" \| 9.1mm
Shank Seated Depth:	0.360" \| 9.1mm
Case Capacity:	29.0 Grains of Water \| 1.88 cm³
Primer Size:	Large Pistol (LP)
Max. allowed Pressure:	17405 psi \| 1200 bar
LID:	LID_B10653_C727
Last updated:	2025-01-01

Load data for 44 loads in caliber .45 Auto Rim with .452 | 180gr | Rim Rock RNFP Cowboy bullet and 22 powders such as Maxam CSB 2, Maxam CSB 3. 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
[Accurate No. 2]*	<<locked>>	65%	14866	85%	**5	86%
Accurate Solo 1250	<<locked>>	72%	15476	89%	**4	97%
Alliant UNIQUE	<<locked>>	72%	14982	86%	**07	90%
Baschieri & Pellagri 100	<<locked>>	64%	14446	83%	**8	99%
Hodgdon Universal	<<locked>>	65%	14895	86%	**1	97%
Hodgdon TrailBoss	<<locked>>	96%	7890	45%	**1	97%
Lovex S020	<<locked>>	65%	14214	82%	**1	92%
Maxam CSB 1	<<locked>>	72%	14707	85%	**1	96%
Maxam CSB 2 👍	<<locked>>	76%	15214	87%	**37	100%
Maxam CSB 3 👍	<<locked>>	68%	15621	90%	**8	99%
ReloadSwiss RS 12	<<locked>>	64%	14649	84%	**14	100%
ReloadSwiss RS 14	<<locked>>	95%	6701	38%	**2	91%
ReloadSwiss RS 20	<<locked>>	78%	15592	90%	**40	93%
SNPE Vectan A0	<<locked>>	72%	15302	88%	**1	90%
SNPE Vectan BA 9	<<locked>>	64%	14765	85%	**5	94%
SNPE Vectan BA9 1/2	<<locked>>	65%	14402	83%	**8	96%
[Somchem MP200]*	<<locked>>	65%	14518	83%	**8	88%
Somchem MS200	<<locked>>	67%	14823	85%	**1	91%
Vihtavuori N320	<<locked>>	65%	14968	86%	**8	100%
Vihtavuori N32C Tin Star	<<locked>>	88%	14794	85%	**5	100%
Vihtavuori N330	<<locked>>	71%	15505	89%	**27	98%
Vihtavuori N340	<<locked>>	72%	15200	87%	**4	91%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[Accurate No. 2]*	<<locked>>	61%	13227	76%	**6	84%
Accurate Solo 1250	<<locked>>	60%	10965	63%	**0	92%
[Alliant UNIQUE]*	<<locked>>	61%	11008	63%	**6	84%
Baschieri & Pellagri 100	<<locked>>	60%	12850	74%	**9	98%
Hodgdon Universal	<<locked>>	61%	13402	77%	**8	96%
Hodgdon TrailBoss	<<locked>>	83%	6121	35%	**6	94%
Lovex S020	<<locked>>	62%	12575	72%	**8	90%
Maxam CSB 1	<<locked>>	61%	10544	61%	**3	91%
Maxam CSB 2	<<locked>>	61%	9456	54%	**9	96%
Maxam CSB 3	<<locked>>	60%	12473	72%	**6	98%
ReloadSwiss RS 12	<<locked>>	61%	12981	75%	**1	100%
[ReloadSwiss RS 14]*	<<locked>>	88%	5918	34%	**3	89%
[ReloadSwiss RS 20]*	<<locked>>	61%	9602	55%	**3	83%
[SNPE Vectan A0]*	<<locked>>	62%	11313	65%	**6	84%
SNPE Vectan BA 9	<<locked>>	60%	13402	77%	**9	92%
SNPE Vectan BA9 1/2	<<locked>>	61%	12792	74%	**2	94%
[Somchem MP200]*	<<locked>>	61%	13111	75%	**5	86%
[Somchem MS200]*	<<locked>>	60%	12082	69%	**9	87%
Vihtavuori N320	<<locked>>	61%	13256	76%	**2	100%
Vihtavuori N32C Tin Star	<<locked>>	60%	7063	41%	**5	99%
Vihtavuori N330	<<locked>>	60%	11066	64%	**6	94%
[Vihtavuori N340]*	<<locked>>	61%	11023	63%	**3	85%

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