Load data for .45 Win. Mag. + .451 | 255gr | Rim Rock SWC Top Shelf

Recommended Powder(s): ReloadSwiss RS 20, Rottweil P 806, SNPE Vectan A0, Vihtavuori 3N37, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.451 \| 255gr \| Rim Rock SWC Top Shelf
Manufacturer SKU:	#344
Bullet Weight:	255gr \| 16.5g
Bullet Diameter:	0.451" \| 11.46mm
Bullet Length:	0.686" \| 17.4mm
Caliber:	.45 Win. Mag. load data
Case Length (l3):	1.198" \| 30.4mm
Cartridge Length (C.O.L.):	1.347" \| 34.2mm
Seated Depth:	0.537" \| 13.6mm
Shank Seated Depth:	0.537" \| 13.6mm
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_B10641_C740
Last updated:	2025-01-01

Load data for 114 loads in caliber .45 Win. Mag. with .451 | 255gr | Rim Rock SWC Top Shelf bullet and 57 powders such as ReloadSwiss RS 20, Rottweil P 806, SNPE Vectan A0, 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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Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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>>	97%	26556	67%	**66	93%
ADI AP 70N	<<locked>>	75%	34940	88%	**93	100%
ADI APS 350	<<locked>>	77%	34214	86%	**9	100%
ADI APS 450	<<locked>>	81%	34969	88%	**8	100%
ADI AS 30	<<locked>>	81%	33054	83%	**1	100%
ADI AS 50N	<<locked>>	79%	33852	85%	**30	100%
Accurate No. 2	<<locked>>	82%	35694	90%	**02	100%
Accurate No. 5	<<locked>>	68%	35752	90%	**84	98%
[Accurate No. 7]*	<<locked>>	86%	33968	85%	**14	87%
Accurate Solo 1000	<<locked>>	83%	35491	89%	**27	100%
Accurate Solo 1250	<<locked>>	89%	35056	88%	**76	100%
Alliant BULLSEYE	<<locked>>	79%	35143	88%	**38	100%
Alliant POWER PISTOL	<<locked>>	89%	34084	85%	**11	95%
Alliant UNIQUE	<<locked>>	89%	33663	84%	**32	100%
Baschieri & Pellagri 100	<<locked>>	82%	33214	83%	**14	100%
Hodgdon Clays	<<locked>>	77%	34534	87%	**2	100%
Hodgdon HS-6	<<locked>>	74%	34708	87%	**61	99%
Hodgdon Longshot	<<locked>>	69%	33489	84%	**48	99%
Hodgdon Universal	<<locked>>	83%	34940	88%	**93	100%
Lovex D036	<<locked>>	68%	35694	89%	**84	98%
[Lovex D037.1]*	<<locked>>	86%	33968	85%	**14	87%
Lovex S011	<<locked>>	73%	35534	89%	**53	100%
Lovex S020	<<locked>>	81%	34418	86%	**99	100%
Maxam CSB 1	<<locked>>	92%	33881	85%	**63	100%
Maxam CSB 2	<<locked>>	91%	35230	88%	**93	100%
Maxam CSB 3	<<locked>>	85%	33634	84%	**43	100%
Maxam CSB 4	<<locked>>	83%	34809	87%	**33	100%
Maxam CSB 5	<<locked>>	79%	35592	89%	**7	100%
Ramshot Silhouette	<<locked>>	73%	33794	85%	**29	100%
Ramshot True Blue	<<locked>>	69%	34403	86%	**45	99%
Ramshot Zip	<<locked>>	63%	34969	88%	**66	100%
ReloadSwiss RS 12	<<locked>>	77%	33257	83%	**56	100%
ReloadSwiss RS 14	<<locked>>	95%	10211	26%	**6	100%
ReloadSwiss RS 20 👍	<<locked>>	92%	34316	86%	**38	100%
ReloadSwiss RS 24	<<locked>>	93%	34664	87%	**04	90%
Rottweil P 801	<<locked>>	73%	35099	88%	**43	100%
Rottweil P 806 👍	<<locked>>	96%	29646	74%	**07	99%
SNPE Vectan A0 👍	<<locked>>	93%	35215	88%	**99	100%
SNPE Vectan BA 9	<<locked>>	81%	33272	83%	**60	100%
SNPE Vectan BA10	<<locked>>	75%	34954	88%	**8	100%
SNPE Vectan BA7 1/2	<<locked>>	95%	32126	81%	**15	99%
SNPE Vectan BA9 1/2	<<locked>>	86%	35578	89%	**93	100%
Shooters World Auto Pistol	<<locked>>	68%	35694	89%	**84	98%
[Shooters World Major Pistol]*	<<locked>>	86%	33968	85%	**14	87%
Somchem MP200	<<locked>>	84%	35520	89%	**42	100%
Somchem MS200	<<locked>>	86%	33837	85%	**06	100%
Somchem S221	<<locked>>	79%	35592	89%	**98	93%
Vihtavuori 3N37 👍	<<locked>>	90%	33794	85%	**58	100%
[Vihtavuori 3N38]*	<<locked>>	97%	27209	68%	**02	87%
[Vihtavuori N105]*	<<locked>>	96%	19769	50%	**24	85%
Vihtavuori N310	<<locked>>	65%	33199	83%	**8	100%
Vihtavuori N320	<<locked>>	82%	35317	89%	**47	100%
Vihtavuori N32C Tin Star	<<locked>>	94%	25309	63%	**9	100%
Vihtavuori N330	<<locked>>	83%	34055	85%	**86	100%
Vihtavuori N340	<<locked>>	88%	34940	88%	**15	100%
Vihtavuori N350 👍	<<locked>>	94%	34360	86%	**58	100%
Winchester 231	<<locked>>	69%	33475	84%	**56	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	70%	13285	33%	**4	80%
ADI AP 70N	<<locked>>	60%	23018	58%	**8	100%
ADI APS 350	<<locked>>	60%	22727	57%	**1	100%
ADI APS 450	<<locked>>	61%	21944	55%	**7	100%
ADI AS 30	<<locked>>	62%	20349	51%	**7	100%
ADI AS 50N	<<locked>>	62%	21567	54%	**9	100%
Accurate No. 2	<<locked>>	60%	17999	45%	**3	97%
Accurate No. 5	<<locked>>	61%	26977	68%	**73	95%
[Accurate No. 7]*	<<locked>>	76%	24192	61%	**76	81%
Accurate Solo 1000	<<locked>>	61%	20407	51%	**6	100%
Accurate Solo 1250	<<locked>>	62%	16636	42%	**3	100%
Alliant BULLSEYE	<<locked>>	60%	20987	53%	**1	100%
[Alliant POWER PISTOL]*	<<locked>>	61%	14765	37%	**3	81%
Alliant UNIQUE	<<locked>>	60%	15592	39%	**3	97%
Baschieri & Pellagri 100	<<locked>>	62%	19058	48%	**0	100%
Hodgdon Clays	<<locked>>	60%	22974	58%	**0	100%
Hodgdon HS-6	<<locked>>	61%	22684	57%	**01	94%
Hodgdon Longshot	<<locked>>	61%	25295	63%	**40	97%
Hodgdon Universal	<<locked>>	61%	19014	48%	**9	100%
Lovex D036	<<locked>>	61%	26948	68%	**73	95%
[Lovex D037.1]*	<<locked>>	76%	24192	61%	**76	81%
Lovex S011	<<locked>>	60%	24845	62%	**2	100%
Lovex S020	<<locked>>	60%	18115	45%	**6	100%
Maxam CSB 1	<<locked>>	61%	15040	38%	**4	100%
Maxam CSB 2	<<locked>>	61%	15316	38%	**3	100%
Maxam CSB 3	<<locked>>	60%	17695	44%	**3	100%
Maxam CSB 4	<<locked>>	62%	19986	50%	**3	100%
Maxam CSB 5	<<locked>>	60%	21944	55%	**3	100%
Ramshot Silhouette	<<locked>>	61%	23177	58%	**7	99%
Ramshot True Blue	<<locked>>	61%	25759	65%	**43	97%
Ramshot Zip	<<locked>>	61%	32213	81%	**40	100%
ReloadSwiss RS 12	<<locked>>	61%	21016	53%	**2	100%
ReloadSwiss RS 14	<<locked>>	90%	9166	23%	**6	100%
ReloadSwiss RS 20	<<locked>>	61%	14199	36%	**0	98%
[ReloadSwiss RS 24]*	<<locked>>	77%	21321	53%	**10	81%
Rottweil P 801	<<locked>>	61%	24990	63%	**2	100%
[Rottweil P 806]*	<<locked>>	66%	10196	26%	**3	81%
SNPE Vectan A0	<<locked>>	61%	15316	38%	**0	97%
SNPE Vectan BA 9	<<locked>>	61%	18768	47%	**3	100%
SNPE Vectan BA10	<<locked>>	60%	24265	61%	**0	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	12850	32%	**7	86%
SNPE Vectan BA9 1/2	<<locked>>	60%	17956	45%	**9	100%
Shooters World Auto Pistol	<<locked>>	61%	26948	68%	**73	95%
[Shooters World Major Pistol]*	<<locked>>	76%	24192	61%	**76	81%
Somchem MP200	<<locked>>	61%	18826	47%	**5	98%
Somchem MS200	<<locked>>	61%	17376	44%	**3	99%
[Somchem S221]*	<<locked>>	61%	19421	49%	**8	83%
Vihtavuori 3N37	<<locked>>	61%	14054	35%	**3	90%
[Vihtavuori 3N38]*	<<locked>>	87%	20320	51%	**8	81%
[Vihtavuori N105]*	<<locked>>	90%	17056	43%	**1	81%
Vihtavuori N310	<<locked>>	62%	30182	76%	**9	100%
Vihtavuori N320	<<locked>>	61%	19696	49%	**3	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	11371	29%	**2	100%
Vihtavuori N330	<<locked>>	61%	17405	44%	**6	100%
Vihtavuori N340	<<locked>>	60%	15635	39%	**6	98%
[Vihtavuori N350]*	<<locked>>	61%	12517	31%	**4	88%
Winchester 231	<<locked>>	61%	26107	65%	**4	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