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Load data for .255 GS + .257 | 87gr | Sierra SPT Pro-Hunter

Recommended Powder(s): Alliant Reloder-17, Hodgdon CFE223, Norma 203B, ReloadSwiss RS 60, SNPE Vectan SP 11

.255 GS + .257 | 87gr | Sierra SPT Pro-Hunter

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.257 | 87gr | Sierra SPT Pro-Hunter
Manufacturer SKU:
1610
Bullet Weight:
87gr | 5.6g
Bullet Diameter:
0.257" | 6.53mm
Bullet Length:
0.860" | 21.8mm
Caliber:
.255 GS load data
Case Length (l3):
2.165" | 55.0mm
Cartridge Length (C.O.L.):
2.811" | 71.4mm
Seated Depth:
0.214" | 5.4mm
Shank Seated Depth:
0.214" | 5.4mm
Case Capacity:
62.0 Grains of Water | 4.03 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B5788_C229
Last updated:
2025-02-02

Load data for 176 loads in caliber .255 GS with .257 | 87gr | Sierra SPT Pro-Hunter bullet and 88 powders such as Alliant Reloder-17, Hodgdon CFE223, Norma 203B, ReloadSwiss RS 60, SNPE Vectan SP 11. 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".

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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 2206H
<<locked>>
87%
56956
89%
**76
100%
ADI AR 2208
<<locked>>
92%
57319
90%
**56
99%
Accurate 2200
<<locked>>
85%
56913
89%
**33
99%
Accurate 2495
<<locked>>
85%
56507
89%
**17
100%
Accurate 2520
<<locked>>
84%
56521
89%
**40
100%
Accurate 2700
<<locked>>
92%
57159
90%
**81
96%
[Accurate 3100]*
<<locked>>
97%
38522
60%
**02
93%
Accurate 4064
<<locked>>
91%
57363
90%
**53
100%
Accurate 4350
<<locked>>
97%
53664
84%
**56
99%
Alliant AR-Comp
<<locked>>
84%
56681
89%
**94
100%
Alliant Reloder- TS 15.5
<<locked>>
92%
57377
90%
**79
100%
Alliant Reloder-15
<<locked>>
89%
56840
89%
**89
99%
Alliant Reloder-16
<<locked>>
97%
51445
81%
**56
99%
Alliant Reloder-17 👍
<<locked>>
95%
56652
89%
**84
100%
Alliant Reloder-23
<<locked>>
97%
36709
58%
**25
96%
Alliant Reloder-26
<<locked>>
97%
41263
65%
**96
95%
Baschieri & Pellagri 107
<<locked>>
86%
56420
88%
**79
99%
Hodgdon BL-C2
<<locked>>
85%
57130
90%
**86
100%
Hodgdon Benchmark
<<locked>>
84%
57319
90%
**97
100%
Hodgdon CFE223 👍
<<locked>>
90%
57217
90%
**22
99%
Hodgdon H322
<<locked>>
83%
57072
89%
**33
100%
Hodgdon H380
<<locked>>
90%
56463
88%
**69
99%
Hodgdon H414
<<locked>>
94%
56768
89%
**15
97%
[Hodgdon H4350]*
<<locked>>
97%
49516
78%
**19
94%
Hodgdon Hybrid 100V
<<locked>>
97%
47906
75%
**32
99%
Hodgdon LVR
<<locked>>
96%
56318
88%
**09
99%
Hodgdon Superperformance
<<locked>>
96%
57348
90%
**45
97%
Hodgdon VARGET
<<locked>>
92%
56768
89%
**50
99%
Hodgdon TrailBoss
<<locked>>
97%
33866
53%
**83
100%
IMR 3031
<<locked>>
89%
56681
89%
**56
100%
IMR 4064
<<locked>>
93%
56637
89%
**37
99%
IMR 4166 Enduron
<<locked>>
93%
56376
88%
**07
97%
IMR 4350
<<locked>>
97%
53156
83%
**87
96%
IMR 4451 Enduron
<<locked>>
94%
56652
89%
**37
97%
IMR 4831
<<locked>>
97%
45397
71%
**82
97%
IMR 4895
<<locked>>
89%
57188
90%
**06
100%
IMR 8208 XBR
<<locked>>
85%
56289
88%
**30
100%
Lovex D073.6
<<locked>>
86%
56942
89%
**43
100%
Lovex S060
<<locked>>
87%
56913
89%
**01
100%
Lovex S062
<<locked>>
90%
57232
90%
**50
100%
Lovex S065
<<locked>>
97%
57072
89%
**40
98%
Lovex S070
<<locked>>
97%
55172
86%
**27
97%
Norma 201
<<locked>>
87%
57130
90%
**40
100%
Norma 202
<<locked>>
87%
56826
89%
**33
100%
Norma 203B 👍
<<locked>>
90%
56942
89%
**86
100%
[Norma 204]*
<<locked>>
97%
53983
85%
**37
94%
Norma URP
<<locked>>
97%
53214
83%
**56
99%
Ramshot Big Game
<<locked>>
89%
57058
89%
**99
100%
Ramshot Hunter
<<locked>>
97%
52156
82%
**43
97%
Ramshot TAC
<<locked>>
85%
56768
89%
**37
98%
Ramshot Wild Boar
<<locked>>
85%
56246
88%
**56
100%
ReloadSwiss RS 14
<<locked>>
95%
33881
53%
**19
100%
ReloadSwiss RS 50
<<locked>>
91%
57087
89%
**46
98%
ReloadSwiss RS 52
<<locked>>
90%
56753
89%
**06
100%
ReloadSwiss RS 60 👍
<<locked>>
96%
57087
89%
**01
100%
ReloadSwiss RS 62
<<locked>>
97%
53287
84%
**73
98%
ReloadSwiss RS 70
<<locked>>
97%
53606
84%
**19
98%
Rottweil R 901
<<locked>>
85%
56434
88%
**04
100%
Rottweil R 902
<<locked>>
89%
57348
90%
**27
100%
Rottweil R 903
<<locked>>
93%
57014
89%
**66
100%
Rottweil R 907
<<locked>>
95%
57116
90%
**30
96%
SNPE Vectan SP 11 👍
<<locked>>
93%
57421
90%
**15
100%
SNPE Vectan SP 7
<<locked>>
86%
56927
89%
**40
99%
SNPE Vectan SP 9
<<locked>>
87%
56478
88%
**60
100%
SNPE Vectan Tubal 3000
<<locked>>
86%
56797
89%
**51
100%
SNPE Vectan Tubal 5000
<<locked>>
92%
57319
90%
**41
100%
SNPE Vectan Tubal 7000
<<locked>>
96%
56855
89%
**78
97%
Shooters World Long Rifle
<<locked>>
97%
57072
89%
**40
98%
Shooters World Match Rifle
<<locked>>
86%
56942
89%
**43
100%
Shooters World Precision
<<locked>>
90%
57232
90%
**50
100%
Somchem S335
<<locked>>
87%
56797
89%
**51
100%
Somchem S341
<<locked>>
86%
56478
88%
**27
100%
Somchem S355
<<locked>>
93%
56666
89%
**60
100%
Somchem S365
<<locked>>
97%
47892
75%
**94
100%
[Somchem S385]*
<<locked>>
97%
44382
70%
**27
93%
Vihtavuori N130
<<locked>>
83%
57116
89%
**25
100%
Vihtavuori N133
<<locked>>
89%
57319
90%
**41
100%
Vihtavuori N135
<<locked>>
95%
57058
89%
**94
100%
Vihtavuori N140
<<locked>>
89%
56942
89%
**04
100%
Vihtavuori N150
<<locked>>
97%
53664
84%
**61
100%
Vihtavuori N160
<<locked>>
96%
56463
88%
**63
99%
Vihtavuori N530
<<locked>>
83%
56753
89%
**53
100%
Vihtavuori N540
<<locked>>
89%
56579
89%
**23
100%
Vihtavuori N550
<<locked>>
96%
57246
90%
**28
99%
Vihtavuori N555
<<locked>>
97%
40306
63%
**30
96%
Winchester 6.5 StaBALL
<<locked>>
97%
55854
88%
**17
100%
Winchester 760
<<locked>>
94%
56768
89%
**15
97%
Winchester StaBALL HD
<<locked>>
97%
33359
52%
**02
95%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
47500
74%
**92
99%
ADI AR 2208
<<locked>>
81%
40466
63%
**09
96%
Accurate 2200
<<locked>>
81%
49893
78%
**05
98%
Accurate 2495
<<locked>>
81%
49371
77%
**02
100%
Accurate 2520
<<locked>>
81%
50459
79%
**32
100%
[Accurate 2700]*
<<locked>>
81%
38986
61%
**00
90%
[Accurate 3100]*
<<locked>>
93%
33533
53%
**71
90%
Accurate 4064
<<locked>>
81%
41626
65%
**54
100%
[Accurate 4350]*
<<locked>>
81%
30501
48%
**18
91%
Alliant AR-Comp
<<locked>>
81%
50386
79%
**09
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
40306
63%
**38
98%
Alliant Reloder-15
<<locked>>
81%
43120
68%
**14
97%
[Alliant Reloder-16]*
<<locked>>
81%
31198
49%
**31
91%
Alliant Reloder-17
<<locked>>
81%
34751
54%
**82
95%
[Alliant Reloder-23]*
<<locked>>
87%
27528
43%
**30
91%
[Alliant Reloder-26]*
<<locked>>
90%
32285
51%
**33
90%
Baschieri & Pellagri 107
<<locked>>
81%
47050
74%
**96
98%
Hodgdon BL-C2
<<locked>>
81%
50140
79%
**58
100%
Hodgdon Benchmark
<<locked>>
81%
51561
81%
**99
100%
Hodgdon CFE223
<<locked>>
81%
41771
65%
**14
96%
Hodgdon H322
<<locked>>
81%
52881
83%
**64
100%
Hodgdon H380
<<locked>>
81%
41133
64%
**54
95%
[Hodgdon H414]*
<<locked>>
81%
36085
57%
**66
90%
[Hodgdon H4350]*
<<locked>>
88%
38464
60%
**66
90%
[Hodgdon Hybrid 100V]*
<<locked>>
81%
28543
45%
**20
92%
[Hodgdon LVR]*
<<locked>>
81%
33750
53%
**90
92%
[Hodgdon Superperformance]*
<<locked>>
86%
38725
61%
**38
90%
Hodgdon VARGET
<<locked>>
81%
40161
63%
**02
96%
Hodgdon TrailBoss
<<locked>>
81%
27035
42%
**13
100%
IMR 3031
<<locked>>
81%
43961
69%
**36
100%
IMR 4064
<<locked>>
81%
39755
62%
**95
96%
[IMR 4166 Enduron]*
<<locked>>
81%
39291
62%
**43
92%
[IMR 4350]*
<<locked>>
86%
37623
59%
**43
90%
[IMR 4451 Enduron]*
<<locked>>
81%
37565
59%
**23
91%
[IMR 4831]*
<<locked>>
83%
29254
46%
**49
90%
IMR 4895
<<locked>>
81%
44121
69%
**43
98%
IMR 8208 XBR
<<locked>>
81%
49632
78%
**12
100%
Lovex D073.6
<<locked>>
81%
47050
74%
**76
100%
Lovex S060
<<locked>>
81%
47601
75%
**33
99%
Lovex S062
<<locked>>
81%
42641
67%
**71
99%
[Lovex S065]*
<<locked>>
81%
34809
55%
**58
92%
[Lovex S070]*
<<locked>>
83%
35534
56%
**94
90%
Norma 201
<<locked>>
81%
46601
73%
**40
99%
Norma 202
<<locked>>
81%
47094
74%
**53
100%
Norma 203B
<<locked>>
81%
42366
66%
**97
98%
[Norma 204]*
<<locked>>
90%
42975
67%
**94
90%
[Norma URP]*
<<locked>>
81%
31038
49%
**22
91%
Ramshot Big Game
<<locked>>
81%
42496
67%
**10
97%
[Ramshot Hunter]*
<<locked>>
84%
34200
54%
**10
90%
Ramshot TAC
<<locked>>
81%
50053
78%
**15
97%
Ramshot Wild Boar
<<locked>>
81%
49647
78%
**38
99%
ReloadSwiss RS 14
<<locked>>
81%
27079
42%
**52
100%
[ReloadSwiss RS 50]*
<<locked>>
81%
41423
65%
**22
93%
ReloadSwiss RS 52
<<locked>>
81%
41742
65%
**14
99%
ReloadSwiss RS 60
<<locked>>
81%
33910
53%
**63
96%
[ReloadSwiss RS 62]*
<<locked>>
81%
30589
48%
**31
90%
[ReloadSwiss RS 70]*
<<locked>>
83%
33156
52%
**00
90%
Rottweil R 901
<<locked>>
81%
50546
79%
**96
100%
Rottweil R 902
<<locked>>
81%
44251
69%
**81
99%
Rottweil R 903
<<locked>>
81%
37565
59%
**76
97%
[Rottweil R 907]*
<<locked>>
83%
38058
60%
**30
90%
SNPE Vectan SP 11
<<locked>>
81%
38725
61%
**31
96%
SNPE Vectan SP 7
<<locked>>
81%
48327
76%
**79
97%
SNPE Vectan SP 9
<<locked>>
81%
46311
73%
**63
98%
SNPE Vectan Tubal 3000
<<locked>>
81%
48124
75%
**04
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
40001
63%
**36
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
82%
35491
56%
**31
90%
[Shooters World Long Rifle]*
<<locked>>
81%
34809
55%
**58
92%
Shooters World Match Rifle
<<locked>>
81%
47050
74%
**76
100%
Shooters World Precision
<<locked>>
81%
42641
67%
**71
99%
Somchem S335
<<locked>>
81%
47427
74%
**97
100%
Somchem S341
<<locked>>
81%
47993
75%
**76
99%
Somchem S355
<<locked>>
81%
38290
60%
**86
97%
[Somchem S365]*
<<locked>>
81%
27978
44%
**66
94%
[Somchem S385]*
<<locked>>
92%
38072
60%
**79
90%
Vihtavuori N130
<<locked>>
81%
53113
83%
**59
100%
Vihtavuori N133
<<locked>>
81%
44918
70%
**35
100%
Vihtavuori N135
<<locked>>
81%
37318
58%
**27
100%
Vihtavuori N140
<<locked>>
81%
44048
69%
**64
100%
Vihtavuori N150
<<locked>>
81%
32576
51%
**05
96%
[Vihtavuori N160]*
<<locked>>
81%
33837
53%
**71
93%
Vihtavuori N530
<<locked>>
81%
52721
83%
**81
100%
Vihtavuori N540
<<locked>>
81%
43918
69%
**97
100%
[Vihtavuori N550]*
<<locked>>
81%
34592
54%
**23
93%
[Vihtavuori N555]*
<<locked>>
86%
28282
44%
**76
90%
Winchester 6.5 StaBALL
<<locked>>
81%
32547
51%
**15
95%
[Winchester 760]*
<<locked>>
81%
36085
57%
**66
90%
[Winchester StaBALL HD]*
<<locked>>
92%
28311
44%
**99
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.

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