Load data for .375 Fl. Mag. N.E. + .375 | 255gr | Winchester Soft-Point

Recommended Powder(s): Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Somchem S365

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.375 \| 255gr \| Winchester Soft-Point
Bullet Weight:	255gr \| 16.5g
Bullet Diameter:	0.375" \| 9.52mm
Bullet Length:	1.000" \| 25.4mm
Caliber:	.375 Fl. Mag. N.E. load data
Case Length (l3):	2.940" \| 74.7mm
Cartridge Length (C.O.L.):	3.743" \| 95.1mm
Seated Depth:	0.197" \| 5.0mm
Shank Seated Depth:	0.197" \| 5.0mm
Case Capacity:	94.1 Grains of Water \| 6.11 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	47137 psi \| 3250 bar
LID:	LID_B6655_C541
Last updated:	2025-01-01

Load data for 0 loads in caliber .375 Fl. Mag. N.E. with .375 | 255gr | Winchester Soft-Point bullet and 0 powders such as Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Somchem S365. 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 AR 2208	<<locked>>	86%	42409	90%	**00	97%
[Accurate 2700]*	<<locked>>	87%	42366	90%	**41	92%
Accurate 4064	<<locked>>	85%	42322	90%	**20	100%
Accurate 4350	<<locked>>	94%	42308	90%	**82	97%
Alliant Power Pro 2000-MR	<<locked>>	83%	42076	89%	**12	97%
Alliant Reloder- TS 15.5 👍	<<locked>>	86%	42250	90%	**33	99%
Alliant Reloder-15	<<locked>>	84%	42380	90%	**33	98%
Alliant Reloder-16	<<locked>>	94%	42395	90%	**98	97%
Alliant Reloder-17 👍	<<locked>>	90%	42003	89%	**15	98%
Alliant Reloder-23	<<locked>>	97%	32343	69%	**88	95%
[Alliant Reloder-26]*	<<locked>>	97%	35331	75%	**07	93%
Bofors RP3 👍	<<locked>>	86%	42322	90%	**39	99%
[Bofors RP7]*	<<locked>>	89%	41959	89%	**74	93%
Hodgdon CFE223	<<locked>>	85%	42119	89%	**62	97%
Hodgdon H380	<<locked>>	85%	42177	89%	**20	96%
[Hodgdon H414]*	<<locked>>	89%	41974	89%	**66	93%
[Hodgdon H4350]*	<<locked>>	95%	42163	89%	**03	92%
Hodgdon Hybrid 100V	<<locked>>	97%	41858	89%	**49	98%
Hodgdon LVR	<<locked>>	91%	42221	90%	**62	96%
[Hodgdon Superperformance]*	<<locked>>	92%	42206	90%	**72	92%
Hodgdon VARGET	<<locked>>	86%	42177	89%	**93	97%
IMR 4064	<<locked>>	86%	42134	89%	**90	98%
[IMR 4166 Enduron]*	<<locked>>	86%	42105	89%	**51	93%
[IMR 4350]*	<<locked>>	93%	42206	90%	**07	93%
[IMR 4451 Enduron]*	<<locked>>	88%	42148	89%	**80	93%
IMR 4831	<<locked>>	97%	39436	84%	**10	96%
Lovex S062	<<locked>>	84%	42308	90%	**97	99%
Lovex S065	<<locked>>	91%	42250	90%	**93	95%
[Lovex S070]*	<<locked>>	92%	42250	90%	**13	94%
Norma 203B	<<locked>>	84%	42090	89%	**33	98%
Norma URP	<<locked>>	94%	41974	89%	**72	97%
Ramshot Big Game	<<locked>>	85%	42395	90%	**59	98%
Ramshot Hunter	<<locked>>	95%	42177	89%	**72	95%
[ReloadSwiss RS 50]*	<<locked>>	85%	42380	90%	**00	94%
ReloadSwiss RS 60 👍	<<locked>>	88%	42221	90%	**35	100%
ReloadSwiss RS 62	<<locked>>	94%	42061	89%	**02	96%
ReloadSwiss RS 70	<<locked>>	94%	41916	89%	**98	95%
Rottweil R 903	<<locked>>	88%	42395	90%	**33	99%
[Rottweil R 907]*	<<locked>>	89%	41959	89%	**74	93%
SNPE Vectan SP 11	<<locked>>	87%	42380	90%	**62	98%
SNPE Vectan Tubal 5000	<<locked>>	86%	41901	89%	**21	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	91%	42134	89%	**51	94%
Shooters World Long Rifle	<<locked>>	91%	42250	90%	**93	95%
Shooters World Precision	<<locked>>	84%	42308	90%	**97	99%
Somchem S355	<<locked>>	87%	42177	89%	**20	98%
Somchem S365 👍	<<locked>>	97%	41118	87%	**98	99%
Vihtavuori N135	<<locked>>	89%	42134	89%	**77	100%
Vihtavuori N150	<<locked>>	93%	42177	89%	**97	99%
Vihtavuori N160	<<locked>>	91%	42134	89%	**36	97%
Vihtavuori N540	<<locked>>	83%	42076	89%	**97	100%
Vihtavuori N550	<<locked>>	91%	42308	90%	**72	97%
Vihtavuori N555	<<locked>>	97%	34403	73%	**61	95%
Winchester 6.5 StaBALL	<<locked>>	92%	41989	89%	**10	98%
[Winchester 760]*	<<locked>>	89%	41974	89%	**66	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	36666	78%	**79	96%
[Accurate 2700]*	<<locked>>	82%	36854	78%	**29	90%
Accurate 4064	<<locked>>	81%	36912	78%	**15	100%
[Accurate 4350]*	<<locked>>	81%	26701	57%	**21	90%
Alliant Power Pro 2000-MR	<<locked>>	81%	39059	83%	**43	96%
Alliant Reloder- TS 15.5	<<locked>>	81%	36085	77%	**02	97%
Alliant Reloder-15	<<locked>>	81%	38783	82%	**64	97%
[Alliant Reloder-16]*	<<locked>>	81%	28297	60%	**38	90%
Alliant Reloder-17	<<locked>>	81%	31125	66%	**56	95%
[Alliant Reloder-23]*	<<locked>>	89%	25701	55%	**85	90%
[Alliant Reloder-26]*	<<locked>>	93%	31009	66%	**85	90%
Bofors RP3	<<locked>>	81%	35331	75%	**02	97%
[Bofors RP7]*	<<locked>>	84%	35810	76%	**43	90%
Hodgdon CFE223	<<locked>>	81%	36970	78%	**54	95%
[Hodgdon H380]*	<<locked>>	81%	36521	77%	**05	94%
[Hodgdon H414]*	<<locked>>	83%	34389	73%	**98	90%
[Hodgdon H4350]*	<<locked>>	91%	36622	78%	**88	90%
[Hodgdon Hybrid 100V]*	<<locked>>	81%	25730	55%	**49	91%
[Hodgdon LVR]*	<<locked>>	81%	30356	64%	**90	91%
[Hodgdon Superperformance]*	<<locked>>	88%	37565	80%	**74	90%
Hodgdon VARGET	<<locked>>	81%	36579	78%	**79	96%
IMR 4064	<<locked>>	81%	35955	76%	**59	96%
[IMR 4166 Enduron]*	<<locked>>	81%	36260	77%	**26	91%
[IMR 4350]*	<<locked>>	88%	35969	76%	**69	90%
[IMR 4451 Enduron]*	<<locked>>	81%	34505	73%	**20	90%
[IMR 4831]*	<<locked>>	85%	27021	57%	**05	90%
Lovex S062	<<locked>>	81%	38232	81%	**21	98%
[Lovex S065]*	<<locked>>	81%	31314	66%	**54	91%
[Lovex S070]*	<<locked>>	85%	33228	70%	**23	90%
Norma 203B	<<locked>>	81%	38305	81%	**54	97%
[Norma URP]*	<<locked>>	81%	27775	59%	**28	90%
Ramshot Big Game	<<locked>>	81%	37565	80%	**64	97%
[Ramshot Hunter]*	<<locked>>	87%	32663	69%	**56	90%
[ReloadSwiss RS 50]*	<<locked>>	81%	37202	79%	**88	92%
ReloadSwiss RS 60	<<locked>>	81%	33127	70%	**28	98%
[ReloadSwiss RS 62]*	<<locked>>	82%	28210	60%	**70	90%
[ReloadSwiss RS 70]*	<<locked>>	85%	31662	67%	**46	90%
Rottweil R 903	<<locked>>	81%	33475	71%	**49	96%
[Rottweil R 907]*	<<locked>>	84%	35810	76%	**43	90%
SNPE Vectan SP 11	<<locked>>	81%	34418	73%	**95	96%
SNPE Vectan Tubal 5000	<<locked>>	81%	36100	77%	**13	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	84%	33330	71%	**80	90%
[Shooters World Long Rifle]*	<<locked>>	81%	31314	66%	**54	91%
Shooters World Precision	<<locked>>	81%	38232	81%	**21	98%
Somchem S355	<<locked>>	81%	34243	73%	**56	96%
[Somchem S365]*	<<locked>>	81%	24743	52%	**75	93%
Vihtavuori N135	<<locked>>	81%	33475	71%	**13	100%
Vihtavuori N150	<<locked>>	81%	29341	62%	**21	96%
[Vihtavuori N160]*	<<locked>>	81%	30313	64%	**67	92%
Vihtavuori N540	<<locked>>	81%	39189	83%	**44	100%
[Vihtavuori N550]*	<<locked>>	81%	30371	64%	**03	92%
[Vihtavuori N555]*	<<locked>>	88%	26136	55%	**34	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	29167	62%	**18	94%
[Winchester 760]*	<<locked>>	83%	34389	73%	**98	90%

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