I just switched jobs, and I'm finally able to get back into reloading. I'm still trying to develop a good long-range load for my 18" AR. I'd be happy with consistent 1.000" groups or less.
WOA 18" SS barrel, 1-7 twist
HTA Kestrel 556 direct thread suppressor
FF Troy rail
SWFA 3-15x42 optic
My loads are as follows:
77 gr Nossler HPBT with cannelure
Once fired IVI 10 brass
Benchrest primers
Varget powder
I worked up some loads this summer, and got inconclusive results. These were loaded .3gr apart, starting at 22.0 and working up to 23.8. The best were in the 22.6-23.2 range, so I worked up another batch in that area.
Here are some from the original groups. Each load has 6 rounds. After I load the mag, I fire the first into a different target so each of the rounds is chambered the same way.
Good-
Not so good-
The new batch I did were from 22.6 up to 23.2, .2 gr apart. I made two 6-round batches for each load.
Good, but not consistent-
consistent, but not as tight as I would like-
So, I'm trying to figure out whats going on. I don't think its my shooting thats causing the flyers. I'm not great offhand, but I'm pretty steady off the bench.
I like the looks of the 22.8gr target, but that flyer bugs me.
Note that I have to load up and drive to a range. I can't just load another batch and shoot off my back porch. Should I work up another ladder and keep testing, or just roll with the 22.8 gr load?