Load data for .375 Fl. Mag. N.E. + .375 | 270gr | Speer Boat Tail Soft Point

Recommended Powder(s): Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Rottweil R 903, Somchem S365

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.375 \| 270gr \| Speer Boat Tail Soft Point
Manufacturer SKU:	2472
Bullet Weight:	270gr \| 17.5g
Bullet Diameter:	0.375" \| 9.52mm
Bullet Length:	1.310" \| 33.3mm
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:	0.507" \| 12.9mm
Shank Seated Depth:	0.332" \| 8.4mm
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_B6245_C541
Last updated:	2025-01-01
Recommended Twist Rate:	1:18 - 1:15

Load data for 112 loads in caliber .375 Fl. Mag. N.E. with .375 | 270gr | Speer Boat Tail Soft Point bullet and 56 powders such as Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Rottweil R 903, 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>>	87%	42409	90%	**02	97%
[Accurate 2700]*	<<locked>>	88%	42134	89%	**43	92%
Accurate 4064	<<locked>>	86%	42177	89%	**21	100%
Accurate 4350	<<locked>>	96%	42337	90%	**90	97%
Alliant Reloder- TS 15.5	<<locked>>	87%	41872	89%	**28	99%
Alliant Reloder-15	<<locked>>	85%	42003	89%	**34	98%
Alliant Reloder-16	<<locked>>	95%	42076	89%	**87	97%
Alliant Reloder-17 👍	<<locked>>	92%	42177	89%	**20	99%
[Alliant Reloder-23]*	<<locked>>	97%	31241	66%	**74	94%
[Alliant Reloder-26]*	<<locked>>	97%	33837	72%	**75	92%
Hodgdon CFE223	<<locked>>	86%	41959	89%	**61	97%
Hodgdon H380	<<locked>>	87%	42018	89%	**21	96%
[Hodgdon H414]*	<<locked>>	90%	41974	89%	**70	94%
[Hodgdon H4350]*	<<locked>>	96%	42221	90%	**08	93%
Hodgdon Hybrid 100V	<<locked>>	97%	40045	85%	**18	98%
Hodgdon LVR	<<locked>>	93%	42192	90%	**67	96%
[Hodgdon Superperformance]*	<<locked>>	93%	42032	89%	**77	92%
Hodgdon VARGET	<<locked>>	87%	42163	89%	**02	97%
IMR 3031	<<locked>>	84%	42076	89%	**28	100%
IMR 4064	<<locked>>	88%	42308	90%	**95	98%
[IMR 4166 Enduron]*	<<locked>>	87%	42409	90%	**62	94%
[IMR 4350]*	<<locked>>	95%	42380	90%	**11	93%
[IMR 4451 Enduron]*	<<locked>>	89%	41989	89%	**79	93%
IMR 4831	<<locked>>	97%	37550	80%	**79	96%
IMR 4895	<<locked>>	84%	41930	89%	**38	98%
Lovex S062	<<locked>>	85%	42148	89%	**95	99%
Lovex S065	<<locked>>	92%	42177	89%	**98	95%
[Lovex S070]*	<<locked>>	94%	42061	89%	**18	94%
Norma 203B	<<locked>>	85%	41785	89%	**28	98%
Norma URP	<<locked>>	95%	41756	89%	**70	97%
Ramshot Big Game	<<locked>>	85%	41756	89%	**48	98%
[Ramshot Hunter]*	<<locked>>	96%	41916	89%	**70	94%
[ReloadSwiss RS 50]*	<<locked>>	86%	42409	90%	**02	94%
ReloadSwiss RS 52 👍	<<locked>>	86%	42105	89%	**74	99%
ReloadSwiss RS 60 👍	<<locked>>	92%	42235	90%	**33	99%
ReloadSwiss RS 62	<<locked>>	96%	42279	90%	**07	97%
ReloadSwiss RS 70	<<locked>>	95%	42003	89%	**00	95%
Rottweil R 902	<<locked>>	84%	42090	89%	**82	99%
Rottweil R 903 👍	<<locked>>	89%	42206	90%	**34	99%
[Rottweil R 907]*	<<locked>>	90%	42061	89%	**85	93%
SNPE Vectan SP 11	<<locked>>	88%	41843	89%	**57	98%
SNPE Vectan Tubal 5000	<<locked>>	87%	41916	89%	**29	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	92%	42163	89%	**56	94%
Shooters World Long Rifle	<<locked>>	92%	42177	89%	**98	95%
Shooters World Precision	<<locked>>	85%	42148	89%	**95	99%
Somchem S355	<<locked>>	89%	42279	90%	**25	99%
Somchem S365 👍	<<locked>>	97%	39175	83%	**67	99%
Vihtavuori N135	<<locked>>	90%	42409	90%	**82	100%
Vihtavuori N140	<<locked>>	84%	41800	89%	**72	100%
Vihtavuori N150	<<locked>>	94%	42322	90%	**05	99%
Vihtavuori N160	<<locked>>	92%	41945	89%	**38	97%
Vihtavuori N540	<<locked>>	84%	41959	89%	**02	100%
Vihtavuori N550	<<locked>>	92%	42061	89%	**74	97%
Vihtavuori N555	<<locked>>	97%	32880	70%	**39	95%
Winchester 6.5 StaBALL	<<locked>>	93%	41814	89%	**15	98%
[Winchester 760]*	<<locked>>	90%	41974	89%	**70	94%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	35346	75%	**64	95%
[Accurate 2700]*	<<locked>>	83%	36637	78%	**34	90%
Accurate 4064	<<locked>>	81%	35389	75%	**00	100%
[Accurate 4350]*	<<locked>>	82%	26150	55%	**23	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	34824	74%	**83	97%
Alliant Reloder-15	<<locked>>	81%	37275	79%	**39	96%
[Alliant Reloder-16]*	<<locked>>	82%	28007	59%	**46	90%
[Alliant Reloder-17]*	<<locked>>	81%	29921	63%	**38	94%
[Alliant Reloder-23]*	<<locked>>	90%	25672	54%	**06	90%
[Alliant Reloder-26]*	<<locked>>	94%	30980	66%	**03	90%
Hodgdon CFE223	<<locked>>	81%	35621	76%	**33	95%
[Hodgdon H380]*	<<locked>>	81%	34925	74%	**83	94%
[Hodgdon H414]*	<<locked>>	84%	34185	73%	**00	90%
[Hodgdon H4350]*	<<locked>>	91%	36216	77%	**90	90%
[Hodgdon Hybrid 100V]*	<<locked>>	81%	24714	52%	**41	91%
[Hodgdon LVR]*	<<locked>>	81%	29283	62%	**69	90%
[Hodgdon Superperformance]*	<<locked>>	90%	37492	80%	**75	90%
Hodgdon VARGET	<<locked>>	81%	35230	75%	**57	95%
IMR 3031	<<locked>>	81%	37579	80%	**56	100%
IMR 4064	<<locked>>	81%	34824	74%	**47	96%
[IMR 4166 Enduron]*	<<locked>>	81%	34911	74%	**05	91%
[IMR 4350]*	<<locked>>	89%	35897	76%	**80	90%
[IMR 4451 Enduron]*	<<locked>>	82%	34214	73%	**18	90%
[IMR 4831]*	<<locked>>	85%	26295	56%	**06	90%
IMR 4895	<<locked>>	81%	38232	81%	**65	97%
Lovex S062	<<locked>>	81%	36796	78%	**97	98%
[Lovex S065]*	<<locked>>	81%	30182	64%	**42	90%
[Lovex S070]*	<<locked>>	86%	32924	70%	**24	90%
Norma 203B	<<locked>>	81%	36796	78%	**29	97%
[Norma URP]*	<<locked>>	81%	27180	58%	**29	90%
Ramshot Big Game	<<locked>>	81%	36143	77%	**39	96%
[Ramshot Hunter]*	<<locked>>	87%	32256	68%	**57	90%
[ReloadSwiss RS 50]*	<<locked>>	81%	35795	76%	**67	92%
ReloadSwiss RS 52	<<locked>>	81%	35186	75%	**39	98%
ReloadSwiss RS 60	<<locked>>	81%	29182	62%	**21	95%
[ReloadSwiss RS 62]*	<<locked>>	83%	28007	59%	**75	90%
[ReloadSwiss RS 70]*	<<locked>>	86%	31720	67%	**57	90%
Rottweil R 902	<<locked>>	81%	38928	83%	**23	99%
Rottweil R 903	<<locked>>	81%	31995	68%	**28	96%
[Rottweil R 907]*	<<locked>>	85%	35476	75%	**47	90%
SNPE Vectan SP 11	<<locked>>	81%	33098	70%	**70	95%
SNPE Vectan Tubal 5000	<<locked>>	81%	35186	75%	**08	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	85%	32764	69%	**82	90%
[Shooters World Long Rifle]*	<<locked>>	81%	30182	64%	**42	90%
Shooters World Precision	<<locked>>	81%	36796	78%	**97	98%
Somchem S355	<<locked>>	81%	32953	70%	**34	96%
[Somchem S365]*	<<locked>>	81%	23960	51%	**64	92%
Vihtavuori N135	<<locked>>	81%	32140	68%	**98	100%
Vihtavuori N140	<<locked>>	81%	38116	81%	**03	100%
Vihtavuori N150	<<locked>>	81%	28166	60%	**10	96%
[Vihtavuori N160]*	<<locked>>	81%	29022	62%	**52	91%
Vihtavuori N540	<<locked>>	81%	37811	80%	**20	100%
[Vihtavuori N550]*	<<locked>>	81%	28993	62%	**82	91%
[Vihtavuori N555]*	<<locked>>	89%	25701	55%	**46	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	28166	60%	**03	93%
[Winchester 760]*	<<locked>>	84%	34185	73%	**00	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