Dudedog
Contributing Member
New powder for me so
looking at Ramshot's burn speed chart they show
Silhouette as being a bit slower than AA#2 but faster than True Blue or AA #5
another chart puts it lots slower than that, slower than True Blue or AA#5, slower than CFE-P
26 Accurate Arms No. 2
27 Ramshot Zip
28 Hodgdon HP-38
29 Winchester 231
30 Alliant 20/28
31 Alliant Unique
32 Hodgdon UNIVERSAL
33 IMR, Co IMR UNEQUAL
34 Alliant Power Pistol
35 VihtaVuori N330
36 Alliant Herco
37 Winchester WSF
38 VihtaVuori N340
39 Hodgdon Hi-Skor 800-X
40 Ramshot True Blue
41 Accurate Arms No. 5
42 Hodgdon HS-6
43 Winchester AutoComp
44 Hodgdon CFE Pistol
45 Ramshot Silhouette
46 VihtaVuori 3N37
Charge data would seem to indicate it is closer to what the chart from someone else shows than what Western Powders shows.
After my test I would place it slower than CFE-P, No big deal but just interesting where Western who sells it placed it on their chart.
Anyway some chrono numbers from my first tests
Springfield 9mm 1911 5" barrel
Mixed range brass (very mixed!, probably no 2 cases the same)
Charges as thrown after setting measure
S+B SP
Temp ~95F
String: 9
Date: 6/17/2018
Time: 2:21:19 PM
Grains: 124
Hi Vel: 994
Low Vel: 961
Ave Vel: 980
Ext Spread: 33
Std Dev: 14
4.9 Silhouette RMR 124 MPR JHP 1.085
Velocity PF Ft/Lbs
986 122.264 267.656
994 123.256 272.017
961 119.164 254.255
991 122.884 270.378
971 120.404 259.574
String: 2
Date: 6/17/2018
Time: 2:24:35 PM
Grains: 124
Hi Vel: 1088
Low Vel: 1040
Ave Vel: 1062
Ext Spread: 48
Std Dev: 20
5.3 Silhuouette RMR 124 MPR JHP 1.085
Velocity PF Ft/Lbs
1040 128.96 297.776
1070 132.68 315.203
1088 134.912 325.898
1071 132.804 315.793
1042 129.208 298.923
Just for fun I did a test of some Universal (which I would say is a little slower than AA#2)
String: 4
Date: 6/17/2018
Time: 2:15:29 PM
Grains: 124
Hi Vel: 1079
Low Vel: 1040
Ave Vel: 1059
Ext Spread: 39
Std Dev: 13
4.3 Universal RMR 124 MPR JHP 1.085
Velocity PF Ft/Lbs
1058 131.192 308.173
1079 133.796 320.528
1059 131.316 308.756
1060 131.44 309.339
1040 128.96 297.776
looking at Ramshot's burn speed chart they show
Silhouette as being a bit slower than AA#2 but faster than True Blue or AA #5
another chart puts it lots slower than that, slower than True Blue or AA#5, slower than CFE-P
26 Accurate Arms No. 2
27 Ramshot Zip
28 Hodgdon HP-38
29 Winchester 231
30 Alliant 20/28
31 Alliant Unique
32 Hodgdon UNIVERSAL
33 IMR, Co IMR UNEQUAL
34 Alliant Power Pistol
35 VihtaVuori N330
36 Alliant Herco
37 Winchester WSF
38 VihtaVuori N340
39 Hodgdon Hi-Skor 800-X
40 Ramshot True Blue
41 Accurate Arms No. 5
42 Hodgdon HS-6
43 Winchester AutoComp
44 Hodgdon CFE Pistol
45 Ramshot Silhouette
46 VihtaVuori 3N37
Charge data would seem to indicate it is closer to what the chart from someone else shows than what Western Powders shows.
After my test I would place it slower than CFE-P, No big deal but just interesting where Western who sells it placed it on their chart.
Anyway some chrono numbers from my first tests
Springfield 9mm 1911 5" barrel
Mixed range brass (very mixed!, probably no 2 cases the same)
Charges as thrown after setting measure
S+B SP
Temp ~95F
String: 9
Date: 6/17/2018
Time: 2:21:19 PM
Grains: 124
Hi Vel: 994
Low Vel: 961
Ave Vel: 980
Ext Spread: 33
Std Dev: 14
4.9 Silhouette RMR 124 MPR JHP 1.085
Velocity PF Ft/Lbs
986 122.264 267.656
994 123.256 272.017
961 119.164 254.255
991 122.884 270.378
971 120.404 259.574
String: 2
Date: 6/17/2018
Time: 2:24:35 PM
Grains: 124
Hi Vel: 1088
Low Vel: 1040
Ave Vel: 1062
Ext Spread: 48
Std Dev: 20
5.3 Silhuouette RMR 124 MPR JHP 1.085
Velocity PF Ft/Lbs
1040 128.96 297.776
1070 132.68 315.203
1088 134.912 325.898
1071 132.804 315.793
1042 129.208 298.923
Just for fun I did a test of some Universal (which I would say is a little slower than AA#2)
String: 4
Date: 6/17/2018
Time: 2:15:29 PM
Grains: 124
Hi Vel: 1079
Low Vel: 1040
Ave Vel: 1059
Ext Spread: 39
Std Dev: 13
4.3 Universal RMR 124 MPR JHP 1.085
Velocity PF Ft/Lbs
1058 131.192 308.173
1079 133.796 320.528
1059 131.316 308.756
1060 131.44 309.339
1040 128.96 297.776
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