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Reloading - A few of questions...

locochinoloco
in Ammunition & Reloading

Featured Replies

Firearm Bullet Bullet (gr) Powder Powder (gr) OAL (in) Shots High Low Average Ext. Spread Std Dev. Power Factor
SP-01 Tactical Xtreme RN 124 WST 4.0 1.14 5 1024 976 990 51 20 123
SP-01 Tactical Xtreme RN 124 WST 4.2 1.14 5 1044 969 1017 75 28 126
SP-01 Tactical Xtreme RN 124 WST 4.4 1.14 5 1040 985 1015 55 21 126
SP-01 Tactical Xtreme RN 124 WST 4.6 1.14 5 1053 1005 1027 48 21 127
SP-01 Tactical Xtreme RN 124 WST 4.8 1.14 5 1060 1032 1044 28 11 129
SP-01 Tactical Xtreme RN 124 WST 4.0 1.12 5 980 959 970 21 7 120
SP-01 Tactical Xtreme RN 124 WST 4.2 1.12 5 1000 981 991 19 8 123
SP-01 Tactical Xtreme RN 124 WST 4.4 1.12 5 1043 995 1020 48 21 126
SP-01 Tactical Xtreme RN 124 WST 4.6 1.12 5 1070 1024 1055 46 18 131
SP-01 Tactical Xtreme RN 124 WST 4.8 1.12 5 1074 1052 1063 22 10 132
PPQ M2 Xtreme RN 124 WST 4.0 1.14 5 995 958 977 37 16 121
PPQ M2 Xtreme RN 124 WST 4.2 1.14 5 998 953 983 45 17 122
PPQ M2 Xtreme RN 124 WST 4.4 1.14 5 1024 955 994 69 27 123
PPQ M2 Xtreme RN 124 WST 4.6 1.14 5 1036 990 1011 46 19 125
PPQ M2 Xtreme RN 124 WST 4.8 1.14 5 1048 966 1007 82 29 125
PPQ M2 Xtreme RN 124 WST 4.0 1.12 5 976 940 965 36 15 120
PPQ M2 Xtreme RN 124 WST 4.2 1.12 5 984 953 969 31 14 120
PPQ M2 Xtreme RN 124 WST 4.4 1.12 5 1000 979 1000 41 18 124
PPQ M2 Xtreme RN 124 WST 4.6 1.12 5 1031 984 1006 47 21 125
PPQ M2 Xtreme RN 124 WST 4.8 1.12 5 1046 1003 1028 43 16 127
 

Above are the results from the previous weekend and it seems like both gun like 4.2g with 1.12 OAL as a target load but one barely makes the PF and the other doesn't make it at all.  I know WST isn't the "Choice" for 9mm by many people, but there are data out there and some go at high as 5.5g on the powder, but the newb in me stay away from that extreme for now.  WST is the only powder I have so I work with it.  I want to meet the minimum PF, so I won't get too used to mouse fart rounds. 

 

So, the questions:

  • I cross referenced a few factory round and the velocity for 124gr FMJ are about 1150 fps, and my high end are 1074 fps and 1046 fps.  In theory, it is safe to increase the powder charge a little bit more?
  • I've noticed some manufactures ammunition yield better results than others across many handguns, e.g. Buffalo Bore or some reload company that produce for USPSA/IPDA shooters.  Is it same to assume that is what I'm witnessing?  4.2g with 1.12 OAL will do well with many handguns?
  • Another observation, longer barrel seem to yield more consistent numbers?  I only test 2 guns with the same loads and consistently longer barrel have better values with 4.6" have the lowest ES of 18 with SD of 5, versus 4" having a ES of 22 and SD of 5.
  • Any tips on how adjustments I can make to the load?

Thanks in advance for any feedback!

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