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EricP
09-20-2020, 09:02 PM
Dillon 650:
9mm:
S&S Casting 135 gr. Round Nose, Coated
Alliant Powder Pistol, 4.8-5.2 gr.:
Dillon sizing, Redding micrometer seating, Lee Factory Crimp:
CCI 500:
1.150":
See chart:
USPSA and general practice ammo:
Power Pistol has a pretty impressive flash.:
Coated lead bullets need more case expansion then the jacketed Precision Delta bullets that I have used for years. Lack of data on 135 gr. bullets:
Knocks down steel with authority.:


As mentioned above, there isn't a lot of published data on 135 gr. bullets in 9mm. I averaged 124 and 147 data, compared it to a spreadsheet I found on Brian Enos, and used a fairly forgiving powder. No pressure signs were encountered. I would say that this is a pretty warm load at 5.2 gr. and hotter than I was expecting.

60720
Power Pistol - 5.0 gr.


Max
1092


Min
1058


Average
1075.4


StDev
10.47960983


Ex Spd
34



Power Pistol - 5.2 gr


Max
1107


Min
1084


Average
1099.2


StDev
6.713171133


Ex Spd
23



* Chrono data - 10 round strings

I loaded 200 rounds for a USPSA match on Saturday at a reduced load of 4.8 gr. I don't have chronograph data on that. The trend line on the chart above says it should be about 1050 fps. This is still ~125 fps faster than necessary for minor power factor, but I won't have time to chronograph a new load before Area 7 this coming week. I will not have any concerns about the chrono stage.

Further load development is necessary.

EricP
09-20-2020, 09:30 PM
Dillon 650
9mm
Precision Delta 124 gr. FMJ
Alliant Power Pistol:
Dillon sizing, Redding or Lee seating, Lee Factory Crimp :
CCI 500:
1.145"(COAL):
See Table:
General practice load:
Power Pistol has an impressive flash:
N/A:
I've shot 10's of thousands of these. Will make minor power factor out of a 4" barrel:




Max
1068


Min
1028


Average
1046.2


StDev
10.25773136


ExSpd
40



* 20 round string, 5" barrel data

This is a much tamer load than the one above. Reducing COAL to 1.135 will tighten standard deviation and extreme spread. 1.135" will chamber in a my very short throated Shadow 2.