Load data for .45 Win. Mag. + .452 | 260gr | Rim Rock SWC?HP Gas Check

Recommended Powder(s): Alliant UNIQUE, Ramshot Silhouette, ReloadSwiss RS 20, Somchem MS200, Vihtavuori N340

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.452 \| 260gr \| Rim Rock SWC?HP Gas Check
Manufacturer SKU:	#426
Bullet Weight:	260gr \| 16.8g
Bullet Diameter:	0.452" \| 11.48mm
Bullet Length:	0.747" \| 19.0mm
Caliber:	.45 Win. Mag. load data
Case Length (l3):	1.198" \| 30.4mm
Cartridge Length (C.O.L.):	1.331" \| 33.8mm
Seated Depth:	0.614" \| 15.6mm
Shank Seated Depth:	0.614" \| 15.6mm
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_B10659_C740
Last updated:	2025-01-01

Load data for 112 loads in caliber .45 Win. Mag. with .452 | 260gr | Rim Rock SWC?HP Gas Check bullet and 56 powders such as Alliant UNIQUE, Ramshot Silhouette, ReloadSwiss RS 20, Somchem MS200, Vihtavuori N340. 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>>	94%	21466	54%	**9	87%
ADI AP 70N	<<locked>>	79%	33591	84%	**20	100%
ADI APS 350	<<locked>>	83%	35114	88%	**6	100%
ADI APS 450	<<locked>>	86%	35563	89%	**2	100%
ADI AS 30	<<locked>>	86%	32924	83%	**5	100%
ADI AS 50N	<<locked>>	83%	32880	82%	**1	100%
Accurate No. 2	<<locked>>	85%	33504	84%	**10	100%
Accurate No. 5	<<locked>>	73%	35781	90%	**09	96%
[Accurate No. 7]*	<<locked>>	92%	34882	87%	**35	84%
Accurate Solo 1000	<<locked>>	85%	33112	83%	**5	100%
Accurate Solo 1250	<<locked>>	96%	35534	89%	**17	100%
Alliant BULLSEYE	<<locked>>	85%	35868	90%	**76	100%
Alliant POWER PISTOL	<<locked>>	96%	35099	88%	**45	94%
Alliant UNIQUE 👍	<<locked>>	97%	34766	87%	**83	100%
Baschieri & Pellagri 100	<<locked>>	87%	33185	83%	**1	100%
Hodgdon Clays	<<locked>>	83%	35737	90%	**3	100%
Hodgdon HP38	<<locked>>	67%	35389	89%	**01	100%
Hodgdon HS-6	<<locked>>	79%	34896	87%	**89	98%
Hodgdon Longshot	<<locked>>	76%	35737	90%	**96	99%
Hodgdon Universal	<<locked>>	89%	35157	88%	**37	100%
Hodgdon CFE Pistol	<<locked>>	90%	34272	86%	**24	100%
Lovex D036	<<locked>>	73%	35723	90%	**09	96%
[Lovex D037.1]*	<<locked>>	92%	34882	87%	**35	84%
Lovex S011	<<locked>>	75%	33721	85%	**4	100%
Lovex S020	<<locked>>	86%	34084	85%	**33	100%
Maxam CSB 1	<<locked>>	95%	31444	79%	**1	100%
Maxam CSB 2	<<locked>>	94%	32372	81%	**07	100%
Maxam CSB 3	<<locked>>	93%	35201	88%	**4	100%
Maxam CSB 4	<<locked>>	88%	34229	86%	**8	100%
Maxam CSB 5	<<locked>>	84%	35853	90%	**8	100%
Ramshot Silhouette 👍	<<locked>>	79%	35143	88%	**73	100%
Ramshot True Blue	<<locked>>	74%	35172	88%	**86	99%
Ramshot Zip	<<locked>>	67%	33823	85%	**7	100%
ReloadSwiss RS 12	<<locked>>	84%	34330	86%	**14	100%
ReloadSwiss RS 20 👍	<<locked>>	95%	31415	79%	**47	100%
[ReloadSwiss RS 24]*	<<locked>>	95%	31198	78%	**83	85%
Rottweil P 801	<<locked>>	76%	33475	84%	**1	100%
Rottweil P 806	<<locked>>	97%	23134	58%	**56	95%
SNPE Vectan A0	<<locked>>	93%	31372	79%	**4	100%
SNPE Vectan BA 9	<<locked>>	86%	33170	83%	**4	100%
SNPE Vectan BA10	<<locked>>	80%	35549	89%	**2	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	28050	70%	**4	96%
SNPE Vectan BA9 1/2	<<locked>>	89%	33301	83%	**07	100%
Shooters World Auto Pistol	<<locked>>	73%	35723	90%	**09	96%
[Shooters World Major Pistol]*	<<locked>>	92%	34882	87%	**35	84%
Somchem MP200	<<locked>>	88%	34853	87%	**66	100%
Somchem MS200 👍	<<locked>>	92%	33765	85%	**37	100%
Somchem S221	<<locked>>	83%	34418	86%	**06	91%
Vihtavuori 3N37	<<locked>>	94%	31589	79%	**63	98%
Vihtavuori N310	<<locked>>	70%	33808	85%	**9	100%
Vihtavuori N320	<<locked>>	87%	34534	87%	**1	100%
Vihtavuori N32C Tin Star	<<locked>>	92%	20479	51%	**4	100%
Vihtavuori N330	<<locked>>	88%	32561	82%	**14	100%
Vihtavuori N340 👍	<<locked>>	92%	33286	83%	**37	100%
Vihtavuori N350	<<locked>>	96%	30356	76%	**43	98%
Winchester 231	<<locked>>	74%	33823	85%	**7	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	83%	16114	40%	**3	81%
ADI AP 70N	<<locked>>	61%	19957	50%	**6	100%
ADI APS 350	<<locked>>	61%	21422	54%	**5	100%
ADI APS 450	<<locked>>	61%	19885	50%	**8	100%
ADI AS 30	<<locked>>	62%	18173	46%	**8	100%
ADI AS 50N	<<locked>>	61%	18710	47%	**1	100%
Accurate No. 2	<<locked>>	62%	16360	41%	**1	94%
Accurate No. 5	<<locked>>	60%	23119	58%	**1	90%
[Accurate No. 7]*	<<locked>>	87%	29631	74%	**76	82%
Accurate Solo 1000	<<locked>>	62%	18579	47%	**1	100%
Accurate Solo 1250	<<locked>>	62%	14315	36%	**8	99%
Alliant BULLSEYE	<<locked>>	62%	19029	48%	**3	99%
[Alliant POWER PISTOL]*	<<locked>>	71%	17114	43%	**3	82%
Alliant UNIQUE	<<locked>>	61%	13866	35%	**8	95%
Baschieri & Pellagri 100	<<locked>>	62%	16578	42%	**4	100%
Hodgdon Clays	<<locked>>	61%	21741	55%	**8	100%
Hodgdon HP38	<<locked>>	61%	28906	72%	**5	100%
[Hodgdon HS-6]*	<<locked>>	61%	18913	47%	**6	89%
Hodgdon Longshot	<<locked>>	61%	21219	53%	**5	93%
Hodgdon Universal	<<locked>>	62%	16868	42%	**4	100%
Hodgdon CFE Pistol	<<locked>>	61%	15142	38%	**1	99%
Lovex D036	<<locked>>	60%	23076	58%	**8	90%
[Lovex D037.1]*	<<locked>>	87%	29631	74%	**76	82%
Lovex S011	<<locked>>	60%	21611	54%	**6	100%
Lovex S020	<<locked>>	60%	15403	39%	**7	98%
Maxam CSB 1	<<locked>>	60%	12894	32%	**2	98%
Maxam CSB 2	<<locked>>	61%	12734	32%	**5	100%
Maxam CSB 3	<<locked>>	62%	16070	40%	**1	100%
Maxam CSB 4	<<locked>>	61%	16955	43%	**4	100%
Maxam CSB 5	<<locked>>	61%	19682	49%	**8	100%
Ramshot Silhouette	<<locked>>	62%	20160	51%	**9	97%
Ramshot True Blue	<<locked>>	61%	22698	57%	**5	94%
Ramshot Zip	<<locked>>	61%	27775	70%	**8	100%
ReloadSwiss RS 12	<<locked>>	61%	17535	44%	**7	100%
ReloadSwiss RS 20	<<locked>>	61%	11893	30%	**8	95%
[ReloadSwiss RS 24]*	<<locked>>	87%	24134	61%	**1	81%
Rottweil P 801	<<locked>>	62%	21843	55%	**6	100%
[Rottweil P 806]*	<<locked>>	74%	10776	27%	**7	80%
SNPE Vectan A0	<<locked>>	62%	13793	35%	**8	94%
SNPE Vectan BA 9	<<locked>>	61%	16505	41%	**4	99%
SNPE Vectan BA10	<<locked>>	61%	22626	57%	**1	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	10921	27%	**9	81%
SNPE Vectan BA9 1/2	<<locked>>	61%	15867	40%	**4	100%
Shooters World Auto Pistol	<<locked>>	60%	23076	58%	**8	90%
[Shooters World Major Pistol]*	<<locked>>	87%	29631	74%	**76	82%
Somchem MP200	<<locked>>	61%	15838	40%	**7	95%
Somchem MS200	<<locked>>	61%	14852	37%	**1	96%
[Somchem S221]*	<<locked>>	66%	19595	49%	**9	81%
[Vihtavuori 3N37]*	<<locked>>	61%	11850	30%	**1	84%
Vihtavuori N310	<<locked>>	61%	26382	66%	**0	100%
Vihtavuori N320	<<locked>>	61%	16607	42%	**4	100%
Vihtavuori N32C Tin Star	<<locked>>	72%	12415	31%	**9	100%
Vihtavuori N330	<<locked>>	61%	14272	36%	**7	100%
Vihtavuori N340	<<locked>>	62%	13895	35%	**4	95%
[Vihtavuori N350]*	<<locked>>	61%	11008	28%	**5	83%
Winchester 231	<<locked>>	61%	22466	56%	**6	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