I recorded this data on a Pro Chrono, works great, no errs messages. all velocities displayed are averages of minimum 5 shots.
Accuracy was very similiar on all charges for me. Chrono was 8 feet from muzzle.
92 F
all combos use these specs:
CCI Large pistol primers
berrys 230 gr
1/2 turn for light crimp on all rounds Lee post die
-------------------
Bullseye 1.26"
Winchester brass. Hi-lo deviation
5.1g 741.8 fps. 74 fps
5.3g. 753.2 fps. 32 fps
5.6g. 793 fps. 38 fps
starting load was very light recoil.
v-340. 1.26"
Speer/federal brass. deviation
6.0g. 695 fps. 150 fps 1 FTF,
6.2g. 702.75fps. 47 fps
6.4g. 722.6 fps. 34 fps.
Longshot. 1.20"
r-p auto brass. deviation
6.0g. 731 fps. 79 fps
6.3g. 760.2 fps. 39 fps.
6.6g. 795 fps. 28 fps.
One thing I noticed and the numbers will show, is that with these 3 powders and these component combos , as the case was filled with more powder the deviation of hi-lo readings decreased. The higher charges seem to be more consistent for my setup and variables at play.
also, the Longshot produced a distinctly different "boom". almost metallic sounding . Thought it was worth mentioning. Anyone else notice that?
As most people already know, but for those who might not:
YOU SHOULD ALWAYS START CHARGES AT MINIMUM AND WORK UP CAUTIOUSLY, POWDER CAN VARY LOT TO LOT. OTHER VARIABLES PROBABLY EXIST ALSO. ONLY USE PUBLISHED DATA, NOT MINE. Thanks
Accuracy was very similiar on all charges for me. Chrono was 8 feet from muzzle.
92 F
all combos use these specs:
CCI Large pistol primers
berrys 230 gr
1/2 turn for light crimp on all rounds Lee post die
-------------------
Bullseye 1.26"
Winchester brass. Hi-lo deviation
5.1g 741.8 fps. 74 fps
5.3g. 753.2 fps. 32 fps
5.6g. 793 fps. 38 fps
starting load was very light recoil.
v-340. 1.26"
Speer/federal brass. deviation
6.0g. 695 fps. 150 fps 1 FTF,
6.2g. 702.75fps. 47 fps
6.4g. 722.6 fps. 34 fps.
Longshot. 1.20"
r-p auto brass. deviation
6.0g. 731 fps. 79 fps
6.3g. 760.2 fps. 39 fps.
6.6g. 795 fps. 28 fps.
One thing I noticed and the numbers will show, is that with these 3 powders and these component combos , as the case was filled with more powder the deviation of hi-lo readings decreased. The higher charges seem to be more consistent for my setup and variables at play.
also, the Longshot produced a distinctly different "boom". almost metallic sounding . Thought it was worth mentioning. Anyone else notice that?
As most people already know, but for those who might not:
YOU SHOULD ALWAYS START CHARGES AT MINIMUM AND WORK UP CAUTIOUSLY, POWDER CAN VARY LOT TO LOT. OTHER VARIABLES PROBABLY EXIST ALSO. ONLY USE PUBLISHED DATA, NOT MINE. Thanks
