Load data for 7.63 Mauser + .309 | 125gr | Rim Rock RNFP Gas Check

Recommended Powder(s): SNPE Vectan BA7 1/2, Vihtavuori 3N37, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.309 \| 125gr \| Rim Rock RNFP Gas Check
Manufacturer SKU:	#401
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.309" \| 7.85mm
Bullet Length:	0.732" \| 18.6mm
Caliber:	7.63 Mauser load data
Case Length (l3):	0.990" \| 25.1mm
Cartridge Length (C.O.L.):	1.359" \| 34.5mm
Seated Depth:	0.363" \| 9.2mm
Shank Seated Depth:	0.363" \| 9.2mm
Case Capacity:	17.2 Grains of Water \| 1.12 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	37710 psi \| 2600 bar
LID:	LID_B10493_C1127
Last updated:	2025-01-01

Load data for 114 loads in caliber 7.63 Mauser with .309 | 125gr | Rim Rock RNFP Gas Check bullet and 57 powders such as SNPE Vectan BA7 1/2, 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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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%	32518	86%	**11	98%
ADI AP 70N	<<locked>>	64%	32068	85%	**06	100%
ADI APS 350	<<locked>>	68%	31604	84%	**5	100%
ADI APS 450	<<locked>>	71%	32837	87%	**1	100%
ADI AS 30	<<locked>>	72%	32097	85%	**10	100%
ADI AS 50N	<<locked>>	70%	32503	86%	**53	100%
Accurate No. 2	<<locked>>	71%	32024	85%	**19	100%
Accurate No. 7	<<locked>>	75%	32967	87%	**66	91%
[Accurate No. 9]*	<<locked>>	84%	33388	89%	**57	85%
Accurate Solo 1000	<<locked>>	73%	33518	89%	**53	100%
Accurate Solo 1250	<<locked>>	79%	33837	90%	**09	100%
[Accurate TCM]*	<<locked>>	83%	32692	87%	**47	86%
[Alliant 2400]*	<<locked>>	96%	33475	89%	**80	82%
Alliant BLUE DOT	<<locked>>	95%	32285	86%	**43	90%
Alliant BULLSEYE	<<locked>>	68%	33141	88%	**65	100%
Alliant POWER PISTOL	<<locked>>	78%	32692	87%	**53	98%
Alliant UNIQUE	<<locked>>	78%	32808	87%	**68	100%
Baschieri & Pellagri 100	<<locked>>	73%	32518	86%	**47	100%
Hodgdon Clays	<<locked>>	68%	32024	85%	**1	100%
Hodgdon HS-6	<<locked>>	64%	32518	86%	**91	100%
Hodgdon Universal	<<locked>>	71%	32068	85%	**06	100%
Hodgdon TrailBoss	<<locked>>	96%	14837	39%	**7	100%
Lovex D037.1	<<locked>>	75%	32967	87%	**66	91%
[Lovex D037.2]*	<<locked>>	83%	33388	89%	**57	85%
Lovex S020	<<locked>>	70%	32140	85%	**22	100%
Maxam CSB 1	<<locked>>	82%	33924	90%	**06	100%
Maxam CSB 2	<<locked>>	77%	32750	87%	**99	100%
Maxam CSB 3	<<locked>>	76%	33156	88%	**76	100%
Maxam CSB 4	<<locked>>	72%	32140	85%	**47	100%
Maxam CSB 5	<<locked>>	69%	33025	88%	**10	100%
[Ramshot Enforcer]*	<<locked>>	97%	33228	88%	**99	84%
Ramshot Silhouette	<<locked>>	65%	33837	90%	**78	100%
ReloadSwiss RS 12	<<locked>>	68%	33562	89%	**93	100%
ReloadSwiss RS 14	<<locked>>	94%	13024	35%	**1	100%
ReloadSwiss RS 20	<<locked>>	80%	33083	88%	**65	100%
ReloadSwiss RS 24	<<locked>>	81%	33330	88%	**60	94%
Rottweil P 801	<<locked>>	62%	32576	86%	**53	100%
Rottweil P 806	<<locked>>	87%	33765	90%	**93	100%
SNPE Vectan A0	<<locked>>	81%	33243	88%	**29	100%
SNPE Vectan BA 9	<<locked>>	72%	32590	86%	**99	100%
SNPE Vectan BA10	<<locked>>	67%	32822	87%	**1	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	86%	33141	88%	**81	100%
SNPE Vectan BA9 1/2	<<locked>>	73%	31937	85%	**93	100%
[Shooters World Heavy Pistol]*	<<locked>>	83%	33388	89%	**57	85%
Shooters World Major Pistol	<<locked>>	75%	32967	87%	**66	91%
Somchem MP200	<<locked>>	73%	33562	89%	**71	100%
Somchem MS200	<<locked>>	77%	33678	89%	**45	100%
Somchem S221	<<locked>>	68%	33301	88%	**40	96%
Vihtavuori 3N37 👍	<<locked>>	80%	33344	88%	**11	100%
Vihtavuori 3N38	<<locked>>	91%	32445	86%	**34	94%
Vihtavuori N105	<<locked>>	95%	27963	74%	**27	96%
Vihtavuori N320	<<locked>>	72%	33634	89%	**66	100%
Vihtavuori N32C Tin Star	<<locked>>	94%	31488	83%	**4	100%
Vihtavuori N330	<<locked>>	72%	32140	85%	**06	100%
Vihtavuori N340	<<locked>>	76%	32140	85%	**32	100%
Vihtavuori N350 👍	<<locked>>	82%	32764	87%	**98	100%
Winchester 231	<<locked>>	62%	33663	89%	**99	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	13256	35%	**3	85%
ADI AP 70N	<<locked>>	61%	29907	79%	**79	100%
ADI APS 350	<<locked>>	61%	26847	71%	**3	100%
ADI APS 450	<<locked>>	62%	26368	70%	**9	100%
ADI AS 30	<<locked>>	60%	23395	62%	**9	100%
ADI AS 50N	<<locked>>	61%	25991	69%	**1	100%
Accurate No. 2	<<locked>>	61%	23395	62%	**10	100%
[Accurate No. 7]*	<<locked>>	62%	19725	52%	**50	82%
[Accurate No. 9]*	<<locked>>	76%	25686	68%	**48	81%
Accurate Solo 1000	<<locked>>	61%	24729	66%	**1	100%
Accurate Solo 1250	<<locked>>	62%	21466	57%	**8	100%
[Accurate TCM]*	<<locked>>	74%	23569	62%	**06	80%
[Alliant 2400]*	<<locked>>	92%	30037	80%	**37	80%
[Alliant BLUE DOT]*	<<locked>>	78%	19638	52%	**30	80%
Alliant BULLSEYE	<<locked>>	61%	26905	71%	**79	100%
Alliant POWER PISTOL	<<locked>>	61%	19667	52%	**30	91%
Alliant UNIQUE	<<locked>>	60%	20160	53%	**8	100%
Baschieri & Pellagri 100	<<locked>>	62%	24091	64%	**1	100%
Hodgdon Clays	<<locked>>	61%	27224	72%	**9	100%
Hodgdon HS-6	<<locked>>	61%	28964	77%	**45	99%
Hodgdon Universal	<<locked>>	61%	24163	64%	**07	100%
Hodgdon TrailBoss	<<locked>>	72%	9297	25%	**3	100%
[Lovex D037.1]*	<<locked>>	62%	19725	52%	**50	82%
[Lovex D037.2]*	<<locked>>	76%	25686	68%	**48	81%
Lovex S020	<<locked>>	61%	23786	63%	**20	100%
Maxam CSB 1	<<locked>>	60%	19000	50%	**2	100%
Maxam CSB 2	<<locked>>	61%	20813	55%	**1	100%
Maxam CSB 3	<<locked>>	62%	22916	61%	**1	100%
Maxam CSB 4	<<locked>>	60%	23569	62%	**5	100%
Maxam CSB 5	<<locked>>	60%	26078	69%	**5	100%
[Ramshot Enforcer]*	<<locked>>	92%	28355	75%	**24	80%
Ramshot Silhouette	<<locked>>	61%	29950	79%	**32	100%
ReloadSwiss RS 12	<<locked>>	60%	27093	72%	**20	100%
ReloadSwiss RS 14	<<locked>>	75%	9123	24%	**9	100%
ReloadSwiss RS 20	<<locked>>	60%	18536	49%	**5	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	17492	46%	**1	82%
Rottweil P 801	<<locked>>	60%	30400	81%	**27	100%
Rottweil P 806	<<locked>>	62%	13358	35%	**8	91%
SNPE Vectan A0	<<locked>>	61%	19189	51%	**5	100%
SNPE Vectan BA 9	<<locked>>	61%	23424	62%	**4	100%
SNPE Vectan BA10	<<locked>>	61%	28384	75%	**5	100%
SNPE Vectan BA7 1/2	<<locked>>	62%	16781	45%	**5	95%
SNPE Vectan BA9 1/2	<<locked>>	60%	22481	60%	**4	100%
[Shooters World Heavy Pistol]*	<<locked>>	76%	25686	68%	**48	81%
[Shooters World Major Pistol]*	<<locked>>	62%	19725	52%	**50	82%
Somchem MP200	<<locked>>	62%	24279	64%	**50	100%
Somchem MS200	<<locked>>	62%	22379	59%	**7	100%
Somchem S221	<<locked>>	61%	25425	67%	**19	93%
Vihtavuori 3N37	<<locked>>	61%	18536	49%	**1	97%
[Vihtavuori 3N38]*	<<locked>>	66%	14649	39%	**5	80%
[Vihtavuori N105]*	<<locked>>	70%	13024	35%	**2	81%
Vihtavuori N320	<<locked>>	61%	24656	65%	**8	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	14692	39%	**8	100%
Vihtavuori N330	<<locked>>	62%	23743	63%	**07	100%
Vihtavuori N340	<<locked>>	61%	20798	55%	**1	100%
Vihtavuori N350	<<locked>>	60%	16505	44%	**5	96%
Winchester 231	<<locked>>	60%	31386	83%	**76	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