Load data for .25 WSSM + .257 | 88gr | Osprey Virtus

Recommended Powder(s): ADI AR 2206H, Hodgdon BL-C2, Ramshot Wild Boar, ReloadSwiss RS 52, SNPE Vectan SP 9

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 88gr \| Osprey Virtus
Manufacturer SKU:	Osprey-0.257-88
Bullet Weight:	88gr \| 5.7g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.020" \| 25.9mm
Caliber:	.25 WSSM load data
Case Length (l3):	1.670" \| 42.4mm
Cartridge Length (C.O.L.):	2.325" \| 59.0mm
Seated Depth:	0.365" \| 9.3mm
Shank Seated Depth:	0.326" \| 8.3mm
Case Capacity:	54.3 Grains of Water \| 3.53 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	63817 psi \| 4400 bar
LID:	LID_B10747_C206
Last updated:	2025-01-01
Recommended Twist Rate:	1:11 - 1:9

Load data for 192 loads in caliber .25 WSSM with .257 | 88gr | Osprey Virtus bullet and 96 powders such as ADI AR 2206H, Hodgdon BL-C2, Ramshot Wild Boar, ReloadSwiss RS 52, SNPE Vectan SP 9. 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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Max FR*
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Barrel Length (cm)
Safety Buffer (%)
.
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 2206H 👍	<<locked>>	93%	57159	90%	**01	99%
ADI AR 2208	<<locked>>	96%	54447	85%	**35	98%
ADI AR 2219	<<locked>>	83%	56449	88%	**61	100%
Accurate 2015	<<locked>>	89%	56811	89%	**96	100%
Accurate 2200	<<locked>>	90%	56507	89%	**41	98%
Accurate 2230	<<locked>>	86%	57246	90%	**48	100%
Accurate 2460	<<locked>>	87%	57276	90%	**51	100%
Accurate 2495	<<locked>>	92%	56594	89%	**74	100%
Accurate 2520	<<locked>>	91%	56739	89%	**81	100%
[Accurate 2700]*	<<locked>>	97%	53679	84%	**23	93%
Accurate 4064	<<locked>>	97%	54911	86%	**58	100%
[Accurate 4350]*	<<locked>>	97%	40756	64%	**45	94%
Alliant AR-Comp	<<locked>>	91%	56623	89%	**55	100%
Alliant Reloder- TS 15.5	<<locked>>	97%	54317	85%	**64	99%
Alliant Reloder-10x	<<locked>>	86%	56565	89%	**05	100%
Alliant Reloder-15	<<locked>>	96%	57276	90%	**23	99%
Alliant Reloder-16	<<locked>>	97%	41858	66%	**74	95%
Alliant Reloder-17	<<locked>>	97%	48414	76%	**55	98%
Baschieri & Pellagri 106	<<locked>>	84%	56275	88%	**33	100%
Baschieri & Pellagri 107	<<locked>>	92%	56855	89%	**10	98%
Hodgdon BL-C2 👍	<<locked>>	90%	56405	88%	**10	100%
Hodgdon Benchmark	<<locked>>	90%	57421	90%	**32	100%
Hodgdon CFE223	<<locked>>	96%	56681	89%	**43	98%
Hodgdon H322	<<locked>>	89%	56449	88%	**61	100%
Hodgdon H335	<<locked>>	84%	56391	88%	**64	100%
Hodgdon H380	<<locked>>	97%	56637	89%	**87	98%
[Hodgdon H414]*	<<locked>>	97%	49951	78%	**15	94%
Hodgdon H4198	<<locked>>	83%	57087	89%	**73	100%
Hodgdon Hybrid 100V	<<locked>>	96%	37521	59%	**33	95%
Hodgdon LVR	<<locked>>	97%	45600	71%	**33	95%
Hodgdon VARGET	<<locked>>	96%	53969	85%	**19	98%
Hodgdon TrailBoss	<<locked>>	95%	32227	50%	**62	100%
IMR 3031	<<locked>>	95%	56289	88%	**01	100%
IMR 4064	<<locked>>	97%	53011	83%	**96	98%
IMR 4166 Enduron	<<locked>>	97%	53432	84%	**66	95%
IMR 4198	<<locked>>	86%	56144	88%	**59	100%
[IMR 4451 Enduron]*	<<locked>>	97%	51082	80%	**50	94%
[IMR 4831]*	<<locked>>	97%	34998	55%	**81	92%
IMR 4895	<<locked>>	95%	56173	88%	**20	99%
IMR 8208 XBR	<<locked>>	91%	56391	88%	**55	100%
Lovex D073.4	<<locked>>	85%	57276	90%	**41	100%
Lovex D073.5	<<locked>>	87%	56565	89%	**41	100%
Lovex D073.6	<<locked>>	93%	56739	89%	**81	100%
Lovex S060	<<locked>>	92%	56289	88%	**15	99%
Lovex S062	<<locked>>	97%	57406	90%	**81	100%
[Lovex S065]*	<<locked>>	97%	46572	73%	**74	94%
[Lovex S070]*	<<locked>>	97%	43947	69%	**28	92%
Norma 201	<<locked>>	93%	56884	89%	**58	100%
Norma 202	<<locked>>	93%	56420	88%	**58	100%
Norma 203B	<<locked>>	96%	56391	88%	**14	99%
[Norma URP]*	<<locked>>	97%	41336	65%	**45	94%
Ramshot Big Game	<<locked>>	95%	56217	88%	**14	99%
Ramshot TAC	<<locked>>	90%	56753	89%	**51	97%
Ramshot Wild Boar 👍	<<locked>>	91%	57348	90%	**01	99%
Ramshot X-Terminator	<<locked>>	88%	56927	89%	**41	99%
ReloadSwiss RS 14	<<locked>>	96%	32953	52%	**21	100%
ReloadSwiss RS 40	<<locked>>	87%	56565	89%	**55	100%
ReloadSwiss RS 50	<<locked>>	96%	56492	89%	**48	96%
ReloadSwiss RS 52 👍	<<locked>>	97%	56884	89%	**46	100%
ReloadSwiss RS 60	<<locked>>	97%	46949	74%	**35	99%
[ReloadSwiss RS 62]*	<<locked>>	96%	40654	64%	**58	94%
[ReloadSwiss RS 70]*	<<locked>>	97%	42482	67%	**81	93%
Rottweil R 901	<<locked>>	91%	57058	89%	**48	100%
Rottweil R 902	<<locked>>	95%	56782	89%	**55	100%
Rottweil R 903	<<locked>>	97%	50575	79%	**99	99%
[Rottweil R 907]*	<<locked>>	97%	48776	76%	**04	93%
SNPE Vectan SP 10	<<locked>>	84%	57029	89%	**64	100%
SNPE Vectan SP 11	<<locked>>	97%	52518	82%	**64	99%
SNPE Vectan SP 7	<<locked>>	92%	57435	90%	**68	98%
SNPE Vectan SP 9 👍	<<locked>>	93%	56811	89%	**87	99%
SNPE Vectan Tubal 3000	<<locked>>	92%	56652	89%	**76	100%
SNPE Vectan Tubal 5000	<<locked>>	97%	54636	86%	**36	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	96%	46079	72%	**09	93%
[Shooters World Long Rifle]*	<<locked>>	97%	46572	73%	**74	94%
Shooters World Match Rifle	<<locked>>	93%	56739	89%	**81	100%
Shooters World Precision	<<locked>>	97%	57406	90%	**81	100%
Shooters World Tactical Rifle	<<locked>>	85%	56391	88%	**12	99%
Somchem S321	<<locked>>	88%	56855	89%	**78	100%
Somchem S335	<<locked>>	93%	56768	89%	**89	100%
Somchem S341	<<locked>>	92%	56971	89%	**64	99%
Somchem S355	<<locked>>	97%	51416	81%	**05	99%
Somchem S365	<<locked>>	97%	36593	57%	**76	97%
Vihtavuori N120	<<locked>>	83%	56246	88%	**87	100%
Vihtavuori N130	<<locked>>	89%	56797	89%	**56	100%
Vihtavuori N133	<<locked>>	95%	57406	90%	**79	100%
Vihtavuori N135	<<locked>>	97%	48472	76%	**07	100%
Vihtavuori N140	<<locked>>	95%	56347	88%	**25	100%
Vihtavuori N150	<<locked>>	97%	43352	68%	**15	98%
Vihtavuori N160	<<locked>>	96%	45513	71%	**91	96%
Vihtavuori N530	<<locked>>	89%	57174	90%	**84	100%
Vihtavuori N540	<<locked>>	95%	56260	88%	**55	100%
Vihtavuori N550	<<locked>>	97%	46499	73%	**63	96%
Winchester 6.5 StaBALL	<<locked>>	97%	45049	71%	**54	98%
Winchester 748	<<locked>>	89%	57406	90%	**23	100%
[Winchester 760]*	<<locked>>	97%	49951	78%	**15	94%
Winchester StaBALL Match	<<locked>>	86%	57246	90%	**10	99%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	39276	62%	**49	95%
[ADI AR 2208]*	<<locked>>	81%	33373	52%	**69	92%
ADI AR 2219	<<locked>>	81%	51634	81%	**82	100%
Accurate 2015	<<locked>>	81%	44208	69%	**95	100%
[Accurate 2200]*	<<locked>>	81%	41249	65%	**49	94%
Accurate 2230	<<locked>>	81%	46644	73%	**61	98%
Accurate 2460	<<locked>>	81%	46673	73%	**71	99%
Accurate 2495	<<locked>>	81%	38435	60%	**49	100%
Accurate 2520	<<locked>>	81%	40074	63%	**79	99%
[Accurate 2700]*	<<locked>>	90%	43221	68%	**27	90%
Accurate 4064	<<locked>>	81%	32198	50%	**89	98%
[Accurate 4350]*	<<locked>>	90%	31807	50%	**15	90%
Alliant AR-Comp	<<locked>>	81%	40321	63%	**82	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	81%	32242	51%	**85	94%
Alliant Reloder-10x	<<locked>>	81%	48225	76%	**77	100%
[Alliant Reloder-15]*	<<locked>>	81%	35027	55%	**54	93%
[Alliant Reloder-16]*	<<locked>>	90%	33446	52%	**38	90%
[Alliant Reloder-17]*	<<locked>>	83%	29660	46%	**56	91%
Baschieri & Pellagri 106	<<locked>>	81%	50836	80%	**51	100%
[Baschieri & Pellagri 107]*	<<locked>>	81%	38276	60%	**30	94%
Hodgdon BL-C2	<<locked>>	81%	40234	63%	**92	97%
Hodgdon Benchmark	<<locked>>	81%	43366	68%	**72	98%
[Hodgdon CFE223]*	<<locked>>	81%	33330	52%	**25	91%
Hodgdon H322	<<locked>>	81%	43801	69%	**35	100%
Hodgdon H335	<<locked>>	81%	51459	81%	**86	100%
[Hodgdon H380]*	<<locked>>	81%	32619	51%	**76	90%
[Hodgdon H414]*	<<locked>>	90%	39885	62%	**95	90%
Hodgdon H4198	<<locked>>	81%	53272	83%	**14	100%
[Hodgdon Hybrid 100V]*	<<locked>>	88%	28514	45%	**67	90%
[Hodgdon LVR]*	<<locked>>	88%	34055	53%	**48	90%
[Hodgdon VARGET]*	<<locked>>	81%	33025	52%	**59	92%
Hodgdon TrailBoss	<<locked>>	81%	25962	41%	**14	100%
IMR 3031	<<locked>>	81%	34896	55%	**90	99%
[IMR 4064]*	<<locked>>	81%	32358	51%	**40	92%
[IMR 4166 Enduron]*	<<locked>>	88%	40292	63%	**94	90%
IMR 4198	<<locked>>	81%	48979	77%	**51	100%
[IMR 4451 Enduron]*	<<locked>>	89%	40277	63%	**20	90%
[IMR 4831]*	<<locked>>	93%	31140	49%	**76	90%
[IMR 4895]*	<<locked>>	81%	35897	56%	**97	94%
IMR 8208 XBR	<<locked>>	81%	41466	65%	**72	97%
Lovex D073.4	<<locked>>	81%	48762	76%	**04	99%
Lovex D073.5	<<locked>>	81%	46180	72%	**61	99%
Lovex D073.6	<<locked>>	81%	37347	59%	**17	98%
Lovex S060	<<locked>>	81%	39900	63%	**90	96%
Lovex S062	<<locked>>	81%	34243	54%	**15	95%
[Lovex S065]*	<<locked>>	88%	35752	56%	**25	90%
[Lovex S070]*	<<locked>>	93%	39189	61%	**27	90%
Norma 201	<<locked>>	81%	37898	59%	**84	97%
Norma 202	<<locked>>	81%	38421	60%	**23	99%
[Norma 203B]*	<<locked>>	81%	34301	54%	**35	93%
[Norma URP]*	<<locked>>	89%	32300	51%	**12	90%
[Ramshot Big Game]*	<<locked>>	81%	33823	53%	**38	93%
[Ramshot TAC]*	<<locked>>	81%	41176	65%	**46	93%
Ramshot Wild Boar	<<locked>>	81%	40292	63%	**72	96%
Ramshot X-Terminator	<<locked>>	81%	45136	71%	**22	97%
ReloadSwiss RS 14	<<locked>>	81%	25860	41%	**50	100%
ReloadSwiss RS 40	<<locked>>	81%	46354	73%	**71	99%
[ReloadSwiss RS 50]*	<<locked>>	85%	38159	60%	**77	90%
ReloadSwiss RS 52	<<locked>>	81%	32532	51%	**31	95%
[ReloadSwiss RS 60]*	<<locked>>	83%	29051	46%	**30	91%
[ReloadSwiss RS 62]*	<<locked>>	91%	33301	52%	**61	90%
[ReloadSwiss RS 70]*	<<locked>>	93%	37202	58%	**40	90%
Rottweil R 901	<<locked>>	81%	41901	66%	**66	99%
Rottweil R 902	<<locked>>	81%	36056	56%	**31	96%
[Rottweil R 903]*	<<locked>>	81%	29341	46%	**00	92%
[Rottweil R 907]*	<<locked>>	92%	41727	65%	**53	90%
SNPE Vectan SP 10	<<locked>>	81%	52243	82%	**86	100%
[SNPE Vectan SP 11]*	<<locked>>	81%	30864	48%	**53	91%
[SNPE Vectan SP 7]*	<<locked>>	81%	39117	61%	**13	93%
SNPE Vectan SP 9	<<locked>>	81%	37594	59%	**00	95%
SNPE Vectan Tubal 3000	<<locked>>	81%	40190	63%	**84	99%
SNPE Vectan Tubal 5000	<<locked>>	81%	32866	51%	**10	98%
[SNPE Vectan Tubal 7000]*	<<locked>>	92%	38812	61%	**61	90%
[Shooters World Long Rifle]*	<<locked>>	88%	35752	56%	**25	90%
Shooters World Match Rifle	<<locked>>	81%	37347	59%	**17	98%
Shooters World Precision	<<locked>>	81%	34243	54%	**15	95%
Shooters World Tactical Rifle	<<locked>>	81%	49182	77%	**91	99%
Somchem S321	<<locked>>	81%	44541	70%	**61	98%
Somchem S335	<<locked>>	81%	39146	61%	**67	99%
Somchem S341	<<locked>>	81%	38943	61%	**23	95%
[Somchem S355]*	<<locked>>	81%	30429	48%	**20	92%
[Somchem S365]*	<<locked>>	86%	26049	41%	**44	90%
Vihtavuori N120	<<locked>>	81%	52518	82%	**31	100%
Vihtavuori N130	<<locked>>	81%	44483	70%	**59	100%
Vihtavuori N133	<<locked>>	81%	37376	59%	**22	100%
Vihtavuori N135	<<locked>>	81%	29486	46%	**90	98%
Vihtavuori N140	<<locked>>	81%	35752	56%	**31	99%
[Vihtavuori N150]*	<<locked>>	81%	25759	40%	**56	92%
[Vihtavuori N160]*	<<locked>>	86%	32300	51%	**69	90%
Vihtavuori N530	<<locked>>	81%	43497	68%	**35	98%
Vihtavuori N540	<<locked>>	81%	35360	55%	**44	98%
[Vihtavuori N550]*	<<locked>>	86%	32474	51%	**22	90%
[Winchester 6.5 StaBALL]*	<<locked>>	83%	28123	44%	**05	90%
Winchester 748	<<locked>>	81%	43758	69%	**84	99%
[Winchester 760]*	<<locked>>	90%	39885	62%	**95	90%
Winchester StaBALL Match	<<locked>>	81%	46949	74%	**20	98%

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.