Load data for .33 Win. + .338 | 250gr | A-Square LionLoad

Recommended Powder(s): Alliant Reloder- TS 15.5, ReloadSwiss RS 52, ReloadSwiss RS 60, Rottweil R 903, Somchem S365

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.338 \| 250gr \| A-Square LionLoad
Bullet Weight:	250gr \| 16.2g
Bullet Diameter:	0.338" \| 8.59mm
Bullet Length:	1.000" \| 25.4mm
Caliber:	.33 Win. load data
Case Length (l3):	2.104" \| 53.4mm
Cartridge Length (C.O.L.):	2.753" \| 69.9mm
Seated Depth:	0.351" \| 8.9mm
Shank Seated Depth:	0.351" \| 8.9mm
Case Capacity:	63.0 Grains of Water \| 4.09 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B383_C441
Last updated:	2025-02-02

Load data for 108 loads in caliber .33 Win. with .338 | 250gr | A-Square LionLoad bullet and 54 powders such as Alliant Reloder- TS 15.5, 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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Min z (%)
Min FR (%)
Max FR*
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Barrel Length (cm)
Safety Buffer (%)
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Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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.

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%	39711	90%	**39	97%
[Accurate 2700]*	<<locked>>	87%	39131	88%	**73	91%
Accurate 4064	<<locked>>	87%	39160	89%	**62	100%
Accurate 4350	<<locked>>	97%	39537	89%	**28	97%
Alliant Reloder- TS 15.5 👍	<<locked>>	87%	39262	89%	**65	99%
Alliant Reloder-15	<<locked>>	85%	39639	90%	**75	97%
Alliant Reloder-16	<<locked>>	96%	39639	90%	**18	97%
Alliant Reloder-17	<<locked>>	92%	39581	89%	**47	98%
[Alliant Reloder-23]*	<<locked>>	97%	28732	65%	**11	93%
Hodgdon CFE223	<<locked>>	86%	39769	90%	**11	97%
Hodgdon H380	<<locked>>	87%	39581	89%	**65	96%
[Hodgdon H414]*	<<locked>>	91%	39566	89%	**08	93%
[Hodgdon H4350]*	<<locked>>	97%	39494	89%	**42	92%
Hodgdon Hybrid 100V	<<locked>>	97%	37231	84%	**49	98%
Hodgdon LVR	<<locked>>	93%	39624	90%	**01	96%
Hodgdon VARGET	<<locked>>	87%	39436	89%	**36	97%
IMR 3031	<<locked>>	85%	39523	89%	**72	100%
IMR 4064	<<locked>>	88%	39697	90%	**29	97%
[IMR 4166 Enduron]*	<<locked>>	87%	39102	88%	**87	93%
[IMR 4350]*	<<locked>>	95%	39740	90%	**49	92%
[IMR 4451 Enduron]*	<<locked>>	89%	39479	89%	**23	93%
IMR 4831	<<locked>>	97%	34490	78%	**13	95%
IMR 4895	<<locked>>	84%	39044	88%	**75	98%
Lovex S062	<<locked>>	85%	39305	89%	**39	99%
Lovex S065	<<locked>>	92%	39088	88%	**29	95%
[Lovex S070]*	<<locked>>	94%	39218	89%	**52	93%
Norma 203B	<<locked>>	86%	39595	90%	**78	98%
Norma URP	<<locked>>	96%	39131	88%	**05	96%
Ramshot Big Game	<<locked>>	86%	39204	89%	**85	97%
[Ramshot Hunter]*	<<locked>>	96%	39305	89%	**05	94%
[ReloadSwiss RS 50]*	<<locked>>	86%	39450	89%	**33	94%
ReloadSwiss RS 52 👍	<<locked>>	87%	39668	90%	**15	99%
ReloadSwiss RS 60 👍	<<locked>>	92%	39276	89%	**54	99%
ReloadSwiss RS 62	<<locked>>	97%	39610	90%	**47	96%
ReloadSwiss RS 70	<<locked>>	95%	39349	89%	**21	95%
Rottweil R 902	<<locked>>	84%	39334	89%	**16	99%
Rottweil R 903 👍	<<locked>>	90%	39552	89%	**82	98%
[Rottweil R 907]*	<<locked>>	91%	39755	90%	**26	92%
SNPE Vectan SP 11	<<locked>>	89%	39479	89%	**98	98%
SNPE Vectan Tubal 5000	<<locked>>	87%	39320	89%	**73	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	93%	39160	89%	**03	93%
Shooters World Long Rifle	<<locked>>	92%	39088	88%	**29	95%
Shooters World Precision	<<locked>>	85%	39305	89%	**39	99%
Somchem S355	<<locked>>	89%	39668	90%	**69	98%
Somchem S365 👍	<<locked>>	97%	36187	82%	**95	99%
Vihtavuori N135	<<locked>>	90%	39682	90%	**29	100%
Vihtavuori N140	<<locked>>	84%	39276	89%	**19	100%
Vihtavuori N150	<<locked>>	94%	39581	89%	**46	99%
Vihtavuori N160	<<locked>>	93%	39668	90%	**78	96%
Vihtavuori N540	<<locked>>	85%	39407	89%	**42	100%
Vihtavuori N550	<<locked>>	93%	39581	89%	**15	96%
[Vihtavuori N555]*	<<locked>>	96%	29733	67%	**70	94%
Winchester 6.5 StaBALL	<<locked>>	94%	39262	89%	**56	98%
[Winchester 760]*	<<locked>>	91%	39566	89%	**08	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	33373	75%	**18	95%
[Accurate 2700]*	<<locked>>	85%	35607	80%	**11	90%
Accurate 4064	<<locked>>	81%	32808	74%	**51	99%
[Accurate 4350]*	<<locked>>	83%	25179	57%	**23	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	32068	72%	**31	97%
Alliant Reloder-15	<<locked>>	81%	34751	79%	**77	96%
[Alliant Reloder-16]*	<<locked>>	83%	26992	61%	**29	90%
[Alliant Reloder-17]*	<<locked>>	81%	27775	63%	**85	93%
[Alliant Reloder-23]*	<<locked>>	91%	24482	55%	**90	90%
[Hodgdon CFE223]*	<<locked>>	81%	33098	75%	**77	94%
[Hodgdon H380]*	<<locked>>	81%	32532	74%	**28	93%
[Hodgdon H414]*	<<locked>>	86%	33315	75%	**80	90%
[Hodgdon H4350]*	<<locked>>	93%	35476	80%	**67	90%
[Hodgdon Hybrid 100V]*	<<locked>>	81%	23264	53%	**14	90%
[Hodgdon LVR]*	<<locked>>	82%	28094	64%	**52	90%
Hodgdon VARGET	<<locked>>	81%	32982	75%	**11	95%
IMR 3031	<<locked>>	81%	34911	79%	**93	100%
IMR 4064	<<locked>>	81%	32619	74%	**98	95%
[IMR 4166 Enduron]*	<<locked>>	81%	32967	75%	**65	90%
[IMR 4350]*	<<locked>>	91%	34925	79%	**60	90%
[IMR 4451 Enduron]*	<<locked>>	83%	33301	75%	**01	90%
[IMR 4831]*	<<locked>>	87%	25469	58%	**03	90%
IMR 4895	<<locked>>	81%	35447	80%	**06	97%
Lovex S062	<<locked>>	81%	34345	78%	**44	98%
[Lovex S065]*	<<locked>>	82%	29022	66%	**26	90%
[Lovex S070]*	<<locked>>	87%	31836	72%	**08	90%
Norma 203B	<<locked>>	81%	33997	77%	**70	96%
[Norma URP]*	<<locked>>	83%	26339	60%	**23	90%
Ramshot Big Game	<<locked>>	81%	33605	76%	**80	96%
[Ramshot Hunter]*	<<locked>>	89%	31111	70%	**34	90%
[ReloadSwiss RS 50]*	<<locked>>	81%	33388	75%	**18	91%
ReloadSwiss RS 52	<<locked>>	81%	32430	73%	**80	98%
[ReloadSwiss RS 60]*	<<locked>>	81%	27253	62%	**69	94%
[ReloadSwiss RS 62]*	<<locked>>	85%	27340	62%	**72	90%
[ReloadSwiss RS 70]*	<<locked>>	88%	30937	70%	**37	90%
Rottweil R 902	<<locked>>	81%	36477	82%	**67	98%
Rottweil R 903	<<locked>>	81%	29370	66%	**78	95%
[Rottweil R 907]*	<<locked>>	86%	34780	79%	**31	90%
SNPE Vectan SP 11	<<locked>>	81%	30835	70%	**21	95%
SNPE Vectan Tubal 5000	<<locked>>	81%	32837	74%	**65	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	86%	32068	72%	**75	90%
[Shooters World Long Rifle]*	<<locked>>	82%	29022	66%	**26	90%
Shooters World Precision	<<locked>>	81%	34345	78%	**44	98%
Somchem S355	<<locked>>	81%	30850	70%	**95	96%
[Somchem S365]*	<<locked>>	81%	22307	50%	**34	91%
Vihtavuori N135	<<locked>>	81%	29617	67%	**52	100%
Vihtavuori N140	<<locked>>	81%	35549	80%	**54	100%
Vihtavuori N150	<<locked>>	81%	26005	59%	**77	95%
[Vihtavuori N160]*	<<locked>>	81%	27122	61%	**13	91%
Vihtavuori N540	<<locked>>	81%	35157	79%	**70	99%
[Vihtavuori N550]*	<<locked>>	81%	26977	61%	**46	91%
[Vihtavuori N555]*	<<locked>>	91%	25193	57%	**49	91%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	26484	60%	**77	93%
[Winchester 760]*	<<locked>>	86%	33315	75%	**80	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.