Load data for .445 Super Mag. + .43 | 180gr | Rim Rock RNFP Cowboy

Recommended Powder(s): Alliant POWER PISTOL, Rottweil P 806

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.43 \| 180gr \| Rim Rock RNFP Cowboy
Manufacturer SKU:	#019
Bullet Weight:	180gr \| 11.7g
Bullet Diameter:	0.430" \| 10.92mm
Bullet Length:	<<locked>>
Caliber:	.445 Super Mag. load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	49.0 Grains of Water \| 3.18 cm³
Primer Size:	Large Pistol Magnum (LPM)
Max. allowed Pressure:	40611 psi \| 2800 bar
LID:	LID_B10613_C793
Last updated:	2026-05-28

Load data for 116 loads in caliber .445 Super Mag. with .43 | 180gr | Rim Rock RNFP Cowboy bullet and 58 powders such as Alliant POWER PISTOL, Rottweil P 806. 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>>	83%	35911	88%	**01	99%
ADI APS 350	<<locked>>	68%	36506	90%	**29	100%
ADI APS 450	<<locked>>	67%	35389	87%	**42	100%
ADI AS 30	<<locked>>	67%	35476	87%	**75	100%
ADI AS 50N	<<locked>>	64%	35911	88%	**34	100%
Accurate No. 2	<<locked>>	65%	35810	88%	**16	100%
Accurate No. 7	<<locked>>	65%	36506	90%	**60	93%
[Accurate No. 9]*	<<locked>>	72%	36245	89%	**37	88%
Accurate Solo 1000	<<locked>>	67%	36216	89%	**24	100%
Accurate Solo 1250	<<locked>>	70%	36347	90%	**83	100%
[Accurate TCM]*	<<locked>>	72%	35897	88%	**31	89%
[Alliant 2400]*	<<locked>>	81%	36013	89%	**60	85%
Alliant BE-86	<<locked>>	69%	36521	90%	**53	100%
Alliant BLUE DOT	<<locked>>	84%	36085	89%	**54	92%
Alliant Herco	<<locked>>	82%	35781	88%	**32	100%
Alliant POWER PISTOL 👍	<<locked>>	68%	35955	89%	**47	99%
Alliant RED DOT	<<locked>>	69%	35723	88%	**04	100%
Alliant UNIQUE	<<locked>>	70%	36521	90%	**49	100%
Baschieri & Pellagri 100	<<locked>>	68%	36448	90%	**21	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	83%	35781	88%	**11	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	63%	35752	88%	**17	100%
Hodgdon Clays	<<locked>>	76%	35882	88%	**39	100%
[Hodgdon LilGun]*	<<locked>>	92%	35476	87%	**96	84%
Hodgdon Universal	<<locked>>	64%	35534	87%	**70	100%
Hodgdon CFE Pistol	<<locked>>	66%	35897	88%	**80	100%
Hodgdon TrailBoss	<<locked>>	95%	19885	49%	**19	100%
Lovex D037.1	<<locked>>	65%	36506	90%	**60	93%
[Lovex D037.2]*	<<locked>>	72%	36245	89%	**37	88%
Lovex S020	<<locked>>	63%	36361	90%	**12	100%
Maxam CSB 1	<<locked>>	73%	36187	89%	**70	100%
Maxam CSB 2	<<locked>>	68%	35462	87%	**44	100%
Maxam CSB 3	<<locked>>	68%	35433	87%	**37	100%
Maxam CSB 4	<<locked>>	66%	35926	88%	**17	100%
Maxam CSB 5	<<locked>>	64%	36347	89%	**81	100%
[Ramshot Enforcer]*	<<locked>>	82%	36506	90%	**83	86%
ReloadSwiss RS 14	<<locked>>	96%	19160	47%	**35	100%
ReloadSwiss RS 20	<<locked>>	69%	35433	87%	**22	100%
ReloadSwiss RS 24	<<locked>>	71%	36521	90%	**60	96%
Rottweil P 806 👍	<<locked>>	73%	36376	90%	**27	100%
SNPE Vectan A0	<<locked>>	72%	36100	89%	**09	100%
SNPE Vectan A1	<<locked>>	66%	36477	90%	**57	100%
SNPE Vectan BA 9	<<locked>>	66%	35795	88%	**70	100%
SNPE Vectan BA7 1/2	<<locked>>	77%	36405	90%	**72	100%
SNPE Vectan BA9 1/2	<<locked>>	66%	35694	88%	**70	100%
SNPE Vectan SP 2	<<locked>>	64%	36332	89%	**37	100%
[Shooters World Heavy Pistol]*	<<locked>>	72%	36245	89%	**37	88%
Shooters World Major Pistol	<<locked>>	65%	36506	90%	**60	93%
Somchem MP200	<<locked>>	64%	36332	89%	**49	100%
Somchem MS200	<<locked>>	69%	36390	90%	**26	100%
Vihtavuori 3N37	<<locked>>	69%	35694	88%	**81	100%
Vihtavuori 3N38	<<locked>>	81%	35737	88%	**37	96%
Vihtavuori N105	<<locked>>	85%	35766	88%	**70	99%
Vihtavuori N320	<<locked>>	64%	36230	89%	**27	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	36419	90%	**45	100%
Vihtavuori N330	<<locked>>	64%	36376	90%	**83	100%
Vihtavuori N340	<<locked>>	68%	36506	90%	**29	100%
Vihtavuori N350	<<locked>>	74%	36071	89%	**75	100%
Winchester AutoComp	<<locked>>	70%	35621	88%	**80	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	19290	48%	**50	91%
ADI APS 350	<<locked>>	61%	31314	77%	**53	100%
ADI APS 450	<<locked>>	61%	30676	76%	**66	100%
ADI AS 30	<<locked>>	61%	30472	75%	**09	100%
ADI AS 50N	<<locked>>	61%	33489	82%	**91	100%
Accurate No. 2	<<locked>>	61%	31821	78%	**63	100%
Accurate No. 7	<<locked>>	61%	31575	78%	**65	91%
[Accurate No. 9]*	<<locked>>	62%	25208	62%	**34	81%
Accurate Solo 1000	<<locked>>	61%	31241	77%	**42	100%
Accurate Solo 1250	<<locked>>	61%	27963	69%	**55	100%
[Accurate TCM]*	<<locked>>	61%	24091	59%	**94	81%
[Alliant 2400]*	<<locked>>	75%	29530	73%	**45	81%
Alliant BE-86	<<locked>>	61%	28892	71%	**52	100%
[Alliant BLUE DOT]*	<<locked>>	63%	19580	48%	**83	80%
Alliant Herco	<<locked>>	61%	21132	52%	**63	100%
Alliant POWER PISTOL	<<locked>>	61%	28848	71%	**03	97%
Alliant RED DOT	<<locked>>	61%	29515	73%	**02	100%
Alliant UNIQUE	<<locked>>	61%	28601	70%	**27	100%
Baschieri & Pellagri 100	<<locked>>	61%	30429	75%	**39	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	61%	20465	50%	**68	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	61%	33779	83%	**98	100%
Hodgdon Clays	<<locked>>	61%	25628	63%	**84	100%
[Hodgdon LilGun]*	<<locked>>	87%	29791	73%	**04	80%
Hodgdon Universal	<<locked>>	61%	33040	81%	**40	100%
Hodgdon CFE Pistol	<<locked>>	61%	31343	77%	**14	100%
Hodgdon TrailBoss	<<locked>>	61%	10225	25%	**6	100%
Lovex D037.1	<<locked>>	61%	31575	78%	**65	91%
[Lovex D037.2]*	<<locked>>	62%	25208	62%	**34	81%
Lovex S020	<<locked>>	61%	33895	83%	**76	100%
Maxam CSB 1	<<locked>>	61%	26179	64%	**12	100%
Maxam CSB 2	<<locked>>	61%	29428	72%	**65	100%
Maxam CSB 3	<<locked>>	61%	29515	73%	**52	100%
Maxam CSB 4	<<locked>>	61%	30995	76%	**45	100%
Maxam CSB 5	<<locked>>	61%	33736	83%	**45	100%
[Ramshot Enforcer]*	<<locked>>	74%	27688	68%	**03	80%
ReloadSwiss RS 14	<<locked>>	61%	9732	24%	**6	100%
ReloadSwiss RS 20	<<locked>>	61%	27630	68%	**04	100%
ReloadSwiss RS 24	<<locked>>	61%	26121	64%	**50	90%
Rottweil P 806	<<locked>>	61%	23757	58%	**04	98%
SNPE Vectan A0	<<locked>>	61%	26556	65%	**48	100%
SNPE Vectan A1	<<locked>>	61%	32068	79%	**94	100%
SNPE Vectan BA 9	<<locked>>	61%	31488	78%	**07	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	23279	57%	**39	99%
SNPE Vectan BA9 1/2	<<locked>>	61%	31082	77%	**04	100%
SNPE Vectan SP 2	<<locked>>	61%	32953	81%	**94	99%
[Shooters World Heavy Pistol]*	<<locked>>	62%	25208	62%	**34	81%
Shooters World Major Pistol	<<locked>>	61%	31575	78%	**65	91%
Somchem MP200	<<locked>>	61%	32851	81%	**93	100%
Somchem MS200	<<locked>>	61%	29791	73%	**21	100%
Vihtavuori 3N37	<<locked>>	61%	27499	68%	**34	100%
[Vihtavuori 3N38]*	<<locked>>	61%	18942	47%	**57	84%
[Vihtavuori N105]*	<<locked>>	61%	15969	39%	**11	84%
Vihtavuori N320	<<locked>>	61%	33620	83%	**88	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	17332	43%	**43	100%
Vihtavuori N330	<<locked>>	61%	33968	84%	**50	100%
Vihtavuori N340	<<locked>>	61%	29486	73%	**21	100%
Vihtavuori N350	<<locked>>	61%	23815	59%	**52	99%
Winchester AutoComp	<<locked>>	61%	27586	68%	**58	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