Load data for .318 Riml. N.E. Westl Rich. + .330 | 250gr | Woodleigh RN SN

Recommended Powder(s): Alliant Reloder-26, IMR 4831, ReloadSwiss RS 70, Somchem S365, Vihtavuori N555

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.330 \| 250gr \| Woodleigh RN SN
Manufacturer SKU:	63
Bullet Weight:	250gr \| 16.2g
Bullet Diameter:	0.330" \| 8.38mm
Bullet Length:	1.302" \| 33.1mm
Caliber:	.318 Riml. N.E. Westl Rich. load data
Case Length (l3):	2.400" \| 61.0mm
Cartridge Length (C.O.L.):	3.477" \| 88.3mm
Seated Depth:	0.225" \| 5.7mm
Shank Seated Depth:	0.225" \| 5.7mm
Case Capacity:	69.0 Grains of Water \| 4.48 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	47863 psi \| 3300 bar
LID:	LID_B12100_C408
Last updated:	2026-01-22

Load data for 110 loads in caliber .318 Riml. N.E. Westl Rich. with .330 | 250gr | Woodleigh RN SN bullet and 55 powders such as Alliant Reloder-26, IMR 4831, ReloadSwiss RS 70, Somchem S365, Vihtavuori N555. 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.

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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 AR 2209	<<locked>>	93%	42540	89%	**77	95%
[ADI AR 2213]*	<<locked>>	97%	42873	90%	**97	93%
Accurate 3100	<<locked>>	97%	40872	85%	**38	98%
Accurate 4350	<<locked>>	88%	42888	90%	**80	99%
Alliant Reloder-16	<<locked>>	89%	42931	90%	**06	100%
Alliant Reloder-17	<<locked>>	85%	42931	90%	**29	100%
Alliant Reloder-19	<<locked>>	93%	42946	90%	**90	96%
Alliant Reloder-22	<<locked>>	97%	41263	86%	**06	95%
Alliant Reloder-23	<<locked>>	97%	39088	82%	**67	100%
Alliant Reloder-25	<<locked>>	97%	34780	73%	**95	96%
Alliant Reloder-26 👍	<<locked>>	96%	42801	89%	**95	99%
[Bofors RP15]*	<<locked>>	97%	38406	80%	**47	94%
Bofors RP5	<<locked>>	97%	41263	86%	**06	95%
Bofors RP7	<<locked>>	84%	42656	89%	**05	97%
Hodgdon H414	<<locked>>	84%	42815	89%	**87	97%
Hodgdon H4350	<<locked>>	90%	42453	89%	**24	96%
[Hodgdon H4831]*	<<locked>>	97%	40074	84%	**11	92%
[Hodgdon H4831 SC]*	<<locked>>	95%	42786	89%	**54	93%
Hodgdon Hybrid 100V	<<locked>>	91%	42685	89%	**54	100%
Hodgdon LVR	<<locked>>	86%	42380	89%	**64	99%
Hodgdon Superperformance	<<locked>>	87%	43018	90%	**13	97%
IMR 4350	<<locked>>	88%	42351	88%	**21	97%
IMR 4451 Enduron	<<locked>>	83%	42670	89%	**01	97%
IMR 4831 👍	<<locked>>	93%	42946	90%	**70	99%
[IMR 4955 Enduron]*	<<locked>>	95%	42888	90%	**31	93%
[IMR 7828 SSC]*	<<locked>>	96%	42786	89%	**13	93%
Lovex S065	<<locked>>	85%	42627	89%	**11	98%
Lovex S070	<<locked>>	87%	42656	89%	**31	97%
Lovex S071	<<locked>>	97%	34316	72%	**19	96%
Norma 204	<<locked>>	88%	42743	89%	**67	95%
Norma MRP	<<locked>>	96%	42641	89%	**56	97%
Norma URP	<<locked>>	88%	42931	90%	**77	99%
[Ramshot Grand]*	<<locked>>	95%	42859	90%	**20	94%
Ramshot Hunter	<<locked>>	89%	43004	90%	**00	98%
Ramshot Magnum	<<locked>>	97%	39929	83%	**57	95%
ReloadSwiss RS 62	<<locked>>	88%	42757	89%	**06	99%
ReloadSwiss RS 70 👍	<<locked>>	89%	42946	90%	**36	99%
[Rottweil R 904]*	<<locked>>	92%	42641	89%	**31	94%
Rottweil R 905	<<locked>>	94%	42453	89%	**83	96%
Rottweil R 907	<<locked>>	84%	42656	89%	**05	97%
SNPE Vectan Tubal 7000	<<locked>>	86%	42409	89%	**72	97%
Shooters World Long Rifle	<<locked>>	85%	42627	89%	**11	98%
[Somchem S361]*	<<locked>>	91%	42380	89%	**05	93%
Somchem S365 👍	<<locked>>	92%	42685	89%	**10	100%
Somchem S385	<<locked>>	94%	42946	90%	**67	97%
Vihtavuori N135	<<locked>>	83%	43033	90%	**65	100%
Vihtavuori N150	<<locked>>	87%	42627	89%	**95	100%
Vihtavuori N160	<<locked>>	86%	42656	89%	**41	99%
Vihtavuori N165	<<locked>>	97%	39334	82%	**98	95%
Vihtavuori N550	<<locked>>	86%	42989	90%	**80	99%
Vihtavuori N555 👍	<<locked>>	96%	42917	90%	**29	100%
[Vihtavuori N560]*	<<locked>>	97%	42177	88%	**26	93%
Winchester 6.5 StaBALL	<<locked>>	87%	42511	89%	**31	100%
Winchester 760	<<locked>>	84%	42815	89%	**87	97%
Winchester StaBALL HD	<<locked>>	97%	34954	73%	**93	100%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2209]*	<<locked>>	83%	31502	66%	**47	90%
[ADI AR 2213]*	<<locked>>	91%	35737	75%	**56	90%
[Accurate 3100]*	<<locked>>	81%	24163	50%	**86	91%
Accurate 4350	<<locked>>	81%	33359	70%	**10	97%
Alliant Reloder-16	<<locked>>	81%	33446	70%	**23	98%
Alliant Reloder-17	<<locked>>	81%	37594	79%	**34	100%
[Alliant Reloder-19]*	<<locked>>	82%	30487	64%	**28	90%
[Alliant Reloder-22]*	<<locked>>	87%	30835	64%	**77	90%
Alliant Reloder-23	<<locked>>	81%	24366	51%	**19	95%
[Alliant Reloder-25]*	<<locked>>	86%	25324	53%	**39	90%
[Alliant Reloder-26]*	<<locked>>	81%	25585	53%	**98	92%
[Bofors RP15]*	<<locked>>	89%	30632	64%	**73	90%
[Bofors RP5]*	<<locked>>	87%	30835	64%	**77	90%
Bofors RP7	<<locked>>	81%	38551	81%	**33	95%
Hodgdon H414	<<locked>>	81%	38711	81%	**11	96%
[Hodgdon H4350]*	<<locked>>	81%	32663	68%	**34	93%
[Hodgdon H4831]*	<<locked>>	94%	36782	77%	**42	90%
[Hodgdon H4831 SC]*	<<locked>>	90%	36782	77%	**42	90%
Hodgdon Hybrid 100V	<<locked>>	81%	30777	64%	**31	98%
Hodgdon LVR	<<locked>>	81%	36419	76%	**52	97%
[Hodgdon Superperformance]*	<<locked>>	81%	34751	73%	**56	94%
[IMR 4350]*	<<locked>>	81%	34258	72%	**70	94%
IMR 4451 Enduron	<<locked>>	81%	40016	84%	**59	96%
IMR 4831	<<locked>>	81%	29399	61%	**08	96%
[IMR 4955 Enduron]*	<<locked>>	88%	34896	73%	**77	90%
[IMR 7828 SSC]*	<<locked>>	90%	35592	74%	**69	90%
Lovex S065	<<locked>>	81%	37463	78%	**19	97%
Lovex S070	<<locked>>	81%	35404	74%	**93	95%
[Lovex S071]*	<<locked>>	84%	23453	49%	**64	90%
[Norma 204]*	<<locked>>	81%	33301	70%	**80	92%
[Norma MRP]*	<<locked>>	83%	27847	58%	**28	90%
Norma URP	<<locked>>	81%	33736	70%	**10	97%
[Ramshot Grand]*	<<locked>>	89%	35462	74%	**72	90%
Ramshot Hunter	<<locked>>	81%	32648	68%	**93	95%
[Ramshot Magnum]*	<<locked>>	89%	30429	64%	**54	90%
ReloadSwiss RS 62	<<locked>>	81%	33170	69%	**29	97%
ReloadSwiss RS 70	<<locked>>	81%	32967	69%	**29	96%
[Rottweil R 904]*	<<locked>>	84%	33156	69%	**47	90%
[Rottweil R 905]*	<<locked>>	83%	29834	62%	**24	90%
Rottweil R 907	<<locked>>	81%	38551	81%	**33	95%
SNPE Vectan Tubal 7000	<<locked>>	81%	36492	76%	**67	95%
Shooters World Long Rifle	<<locked>>	81%	37463	78%	**19	97%
[Somchem S361]*	<<locked>>	86%	36274	76%	**96	90%
Somchem S365	<<locked>>	81%	30284	63%	**77	99%
[Somchem S385]*	<<locked>>	81%	28239	59%	**75	91%
Vihtavuori N135	<<locked>>	81%	40089	84%	**19	100%
Vihtavuori N150	<<locked>>	81%	35346	74%	**70	100%
Vihtavuori N160	<<locked>>	81%	36651	77%	**36	98%
[Vihtavuori N165]*	<<locked>>	87%	28718	60%	**72	90%
Vihtavuori N550	<<locked>>	81%	36970	77%	**72	98%
Vihtavuori N555	<<locked>>	81%	25991	54%	**78	95%
[Vihtavuori N560]*	<<locked>>	92%	35766	75%	**98	90%
Winchester 6.5 StaBALL	<<locked>>	81%	34548	72%	**90	99%
Winchester 760	<<locked>>	81%	38711	81%	**11	96%
[Winchester StaBALL HD]*	<<locked>>	81%	21379	45%	**67	92%

Start Load - Barrel Length: 23.60''

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