COElkChaser
Member
- Joined
- Oct 8, 2019
- Messages
- 58
Hey all,
I got through most of a load development and went to go confirm my drop at 300 yards this weekend. I loaded 17 rounds, 7 with bullets from the lot I did my earlier testing with, and 10 with bullets from a new lot.
Results were terrible! This load shot .6" 5x shot groups repeatably. The first 5 from my latest batch went 3" at 100 yards. The second and third groups of 3 and 4 went around 2".
Finally, because I didn't know what else to do, I shot the last 5 at 300 yards, and they were all within 2.9".
A couple thoughts: the vertical spread is fairly tight on the 100 yard shots. So the large groups could be due to some level of shooter error, but I don't believe that explains the full issue. Also, I didn't keep track of which round had bullets from which lot, but my guess is that I shot 5 of 7 bullets during the 300 yard group.
Wondering what you all do when switching to a new lot? Start over on load development? Do you see this level of sensitivity? What do you measure on bullets to look for consistency?
I got through most of a load development and went to go confirm my drop at 300 yards this weekend. I loaded 17 rounds, 7 with bullets from the lot I did my earlier testing with, and 10 with bullets from a new lot.
Results were terrible! This load shot .6" 5x shot groups repeatably. The first 5 from my latest batch went 3" at 100 yards. The second and third groups of 3 and 4 went around 2".
Finally, because I didn't know what else to do, I shot the last 5 at 300 yards, and they were all within 2.9".
A couple thoughts: the vertical spread is fairly tight on the 100 yard shots. So the large groups could be due to some level of shooter error, but I don't believe that explains the full issue. Also, I didn't keep track of which round had bullets from which lot, but my guess is that I shot 5 of 7 bullets during the 300 yard group.
Wondering what you all do when switching to a new lot? Start over on load development? Do you see this level of sensitivity? What do you measure on bullets to look for consistency?