Suedenflames68
Member
- Joined
- Jun 17, 2020
- Messages
- 102
All shot from 5" kimber 1911 same trip at indoor range. Labradar chronograph.
Factory pmc: 14rounds
Ave 1148fps
ES 42
SD 10.8
6 shot group .94" @25'
I shot some of these before throating the barrel and numbers were slightly better (33es)with more shots in the series. Could be variation in batches? Or bullets were up against the lands....maybe that could have helped the numbers?
I'm a little out of practice and not confident with my precision so only shot at 25 feet unsupported as that's the rule at the range. So groups may be irrelevant but I recorded them and put targets in my notebook. Need to talk to them about that....maybe look into a fixture to test accuracy and have it really mean something .
Tested 4 powders. All loaded to 1.125"+/-.001" with zero 115gr fmj, all pmc brass, cci primers, light Fcd crimp, charges weighed with hornady autocharge dispenser. All loads found in books or powder manufacturers websites but , don't go off my load info, find it yourself to be sure. Posting to share and see if others results are similar and see if others have come up with loads that outperform.
All tests are only 5 shot series, all velocities in FPS and all groups shot at 25'. Was already gonna take a long time and should narrow down what's worth exploring further.
Power pistol:
5.0
Ave 1067 fps
ES 47
SD18.1
Group 1.5"
5.3
Ave 1124
ES 34
SD 13.7
group .52" disregaurding called flyer. .98" with it. Looks promising. Think I'll be exploring around here.
5.6
Ave 1169
ES 67
SD 25.4
GROUP 1.5"
5.9
AVE 1227
ES 42
SD15
GROUP 1"
6.2
AVE 1297
ES 30
SD 11.6
GROUP 1.8
6.5
AVE 1327
ES 37
SD 16.4
GROUP 2.5"
Probably shouldn't have shot those last ones...but no pressure signs...definitely Hot.
LONGSHOT:
5.0
Ave 1057
Es 23
Sd 8.4
Group .7"
Pretty darn good but slow and higher charges hurt consistency. Think I'll make up more to see if it was a fluke.
5.2
Ave 1079
Es 58
Sd 20.8
Group 1.5"
5.4
Ave 1137
Es 77
SD 27.8
GROUP 1.3"
5.6
Ave 1176
ES 50
SD 20.1
GROUP 2"
5.8
AVE 1214
ES 45
SD 17.3
GROUP 2.6"
WIN231:
4.0
Ave 1008
Es 53
Sd 19.7
Group 2.2"
No slide hold open last round
4.2
Ave 1047
Es 82
Sd 30.4
Group 1.2"
No slide hold open last round
4.4
Ave 1090
Es 39
Sd 15.2
Group 1.5
4.6
Moved chrono accidentally setting up next series and recorded wife shooting 9mm in next lane. Need to load up some more of these. numbers seemed to be trending better and
grouped at .68"
4.8
Ave 1187
Es 67
Sd 24.5
Group .85"
AUTOCOMP:
4.8
ave 1049
Es 30
Sd 12.2
Group 1.1"
5.0
Ave 1083
Es 51
Sd 12.2
Group
.9"
5.2
Ave 1128
Es 68
Sd 30.2
Group 1.75"
5.4
Ave 1166
Es 48
Sd 18.3
Group 3"
5.6
Ave 1200
Es 75
Sd 30.3
Group 2.5"
Having the chrono is really neat to be able to see this stuff. Interesting how slow the bullets were moving and being at the bottom of load range with longshot and autocomp where they seemed to perform the best.
231 looked like it liked the top end charges to me, but didn't have any great numbers unless on the one that goofed on me. I had big spreads when I tested my .38 and .45 loads that I came up with using this powder before I got the chrono.
Power pistol was really surprising, both the velocities and where it seemed to perform the best at 5.3gr. Other than hornady starting at 4.8gr, all the others I saw started at 5.9gr...... which chronos almost 100fps faster than the factory rounds i tested. I noted that 5.6 gave a "factoryish recoil" in my notes, and that makes sense looking at velocities. Most calibers I've used power pistol in has seemed to give more perceived recoil than expected, now that I can measure velocity , seems there may be good reason for that.
James
Factory pmc: 14rounds
Ave 1148fps
ES 42
SD 10.8
6 shot group .94" @25'
I shot some of these before throating the barrel and numbers were slightly better (33es)with more shots in the series. Could be variation in batches? Or bullets were up against the lands....maybe that could have helped the numbers?
I'm a little out of practice and not confident with my precision so only shot at 25 feet unsupported as that's the rule at the range. So groups may be irrelevant but I recorded them and put targets in my notebook. Need to talk to them about that....maybe look into a fixture to test accuracy and have it really mean something .
Tested 4 powders. All loaded to 1.125"+/-.001" with zero 115gr fmj, all pmc brass, cci primers, light Fcd crimp, charges weighed with hornady autocharge dispenser. All loads found in books or powder manufacturers websites but , don't go off my load info, find it yourself to be sure. Posting to share and see if others results are similar and see if others have come up with loads that outperform.
All tests are only 5 shot series, all velocities in FPS and all groups shot at 25'. Was already gonna take a long time and should narrow down what's worth exploring further.
Power pistol:
5.0
Ave 1067 fps
ES 47
SD18.1
Group 1.5"
5.3
Ave 1124
ES 34
SD 13.7
group .52" disregaurding called flyer. .98" with it. Looks promising. Think I'll be exploring around here.
5.6
Ave 1169
ES 67
SD 25.4
GROUP 1.5"
5.9
AVE 1227
ES 42
SD15
GROUP 1"
6.2
AVE 1297
ES 30
SD 11.6
GROUP 1.8
6.5
AVE 1327
ES 37
SD 16.4
GROUP 2.5"
Probably shouldn't have shot those last ones...but no pressure signs...definitely Hot.
LONGSHOT:
5.0
Ave 1057
Es 23
Sd 8.4
Group .7"
Pretty darn good but slow and higher charges hurt consistency. Think I'll make up more to see if it was a fluke.
5.2
Ave 1079
Es 58
Sd 20.8
Group 1.5"
5.4
Ave 1137
Es 77
SD 27.8
GROUP 1.3"
5.6
Ave 1176
ES 50
SD 20.1
GROUP 2"
5.8
AVE 1214
ES 45
SD 17.3
GROUP 2.6"
WIN231:
4.0
Ave 1008
Es 53
Sd 19.7
Group 2.2"
No slide hold open last round
4.2
Ave 1047
Es 82
Sd 30.4
Group 1.2"
No slide hold open last round
4.4
Ave 1090
Es 39
Sd 15.2
Group 1.5
4.6
Moved chrono accidentally setting up next series and recorded wife shooting 9mm in next lane. Need to load up some more of these. numbers seemed to be trending better and
grouped at .68"
4.8
Ave 1187
Es 67
Sd 24.5
Group .85"
AUTOCOMP:
4.8
ave 1049
Es 30
Sd 12.2
Group 1.1"
5.0
Ave 1083
Es 51
Sd 12.2
Group
.9"
5.2
Ave 1128
Es 68
Sd 30.2
Group 1.75"
5.4
Ave 1166
Es 48
Sd 18.3
Group 3"
5.6
Ave 1200
Es 75
Sd 30.3
Group 2.5"
Having the chrono is really neat to be able to see this stuff. Interesting how slow the bullets were moving and being at the bottom of load range with longshot and autocomp where they seemed to perform the best.
231 looked like it liked the top end charges to me, but didn't have any great numbers unless on the one that goofed on me. I had big spreads when I tested my .38 and .45 loads that I came up with using this powder before I got the chrono.
Power pistol was really surprising, both the velocities and where it seemed to perform the best at 5.3gr. Other than hornady starting at 4.8gr, all the others I saw started at 5.9gr...... which chronos almost 100fps faster than the factory rounds i tested. I noted that 5.6 gave a "factoryish recoil" in my notes, and that makes sense looking at velocities. Most calibers I've used power pistol in has seemed to give more perceived recoil than expected, now that I can measure velocity , seems there may be good reason for that.
James