As you may know, I have been working up hand-loads for my moose hunt and finding the Nosler 168g ABLR reaching over 3000 fps with IMR 4831. But the question is, with what accuracy or groups?
Well, I shot this group below and it looks like a tight 3/4″ except for the flyer. I shot the third shot in the upper right target and extrapolated its position on the string below. Why I shot that upper right target? Because I wanted a smaller target as a focal aim point.
But it needed to be repeated in the second target below for me to validate it. The trigger is a heavy 4 lbs. but I was able to get used to where it breaks. The thin mountain barrel does heat fast and after 3 shots to warm it, it begins to string.
I repeated the same shots a week later with all the same components at 100 yards. The first 3 shots group 3/4 ” from a cold barrel and the 4th shot drops an inch. I know that a lighter trigger may also help. But overall, I was very pleased with the cold shots for hunting purposes.
Tests continue Using my Labradar
I loaded some 168g ABLR’s with hot H1000 Powder to compete with the IMR 4831. See below low left and right 100 yd 3 shot cold barrel groups with extreme spread of 78 fps an 2 inch groups. The IMR 4831 wins!
I did shoot 168 ABLR today for a third bench rest group for the IMR 4831 and Statistics. Below this group was 1 1/4 inches. Shown below with associated Labradar Stats with Extreme Spread of 14.34 fps and a Std Deviation of 8.17. Very nice indeed!
Labradar Report for IMR 4831
Device ID | LBR-0028541 | ||||||||||||||
Series No | 4 | ||||||||||||||
Total number of shots | 3 | ||||||||||||||
Units velocity | fps | ||||||||||||||
Units distances | yd | ||||||||||||||
Units kinetic energy | ft-lbf | ||||||||||||||
Units weight | grain (gr) | ||||||||||||||
Stats – Average | 2937.25 | fps | |||||||||||||
Stats – Highest | 2946.69 | fps | |||||||||||||
Stats – Lowest | 2932.35 | fps | |||||||||||||
Stats – Ext. Spread | 14.34 | fps | |||||||||||||
Stats – Std. Dev | 8.17 | fps | |||||||||||||
Shot ID | V0 | V25 | V25 | V50 | V75 | V101 | Ke0 | Ke25 | Ke25 | Ke50 | Ke75 | Ke101 | Proj. Weight | Date | Time |
1 | 2933 | 2893 | 2893 | 2852 | 2814 | 0 | 3207 | 3120 | 3120 | 3034 | 2953 | 168 | 2/2/2023 | 13:01:22 | |
2 | 2932 | 2882 | 2882 | 2841 | 2801 | 0 | 3207 | 3098 | 3098 | 3011 | 2925 | 168 | 2/2/2023 | 13:02:44 | |
3 | 2947 | 2907 | 2907 | 2868 | 2829 | 2788 | 3238 | 3151 | 3151 | 3067 | 2984 | 168 | 2/2/2023 | 13:04:08 |
Interestingly, I did note that a drop in outside temperature affects ignition and velocity. Last week I shot at 37degrees F and MV avg was 3003. Today at 26 degrees F, MV avg was 2937 a drop of 70 fps. At 600 yards that equates to a drop of 4 inches on a moose. I’ll keep that in mind!
More Soon…
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