I just got my first match barreled AR upper, and I was looking forward to shooting some tight groups with it. It was built by Superior Barrels and included several test targets showing that it was capable of sub-MOA 5 and 10 round groups. For my first range trip I prepared several different handloads using Hornady 75gr BTHP, Prvi Match 75gr BTHP, and Nosler Custom Competition 69gr BTHP. I also had some Ultramax 55gr SP, and some old reloads with 55gr Hornady FMJs.
The results were disappointing. I best group I shot was with the Ultramax ammo: 10 shots in roughly an inch at 75yd. I'd consider that pretty good considering that this isn't any sort of match ammo. The problem is, all of my reloads did significantly worse! None of them could group much better than 2 MOA! I think the Noslers did a bit better than the Prvis, and the Hornadys were the worst of all. But in any case, I was not happy.
Here are the details:
The rifle:
-16" Douglas barrel
-Geissele Match trigger
-Nightforce NXS Compact 1-4x scope
-Shot from a rest with rear bag
The ammo:
-Loaded with Dillon .223 dies
-Ramshot TAC powder
-Every charge weighed, ensuring less than 0.1gr max spread.
-Lake City brass (mixed years, not sorted)
-Brass trimmed with Possum Hollow trimmer and chamfered
-Wolf SRM primers
-No crimp
-Didn't do anything to the flash holes or primer pockets
-Headspace was a bit on the long side, but acceptable according to Dillon case gauge.
So based on this, can you guys recommend any ways for me to improve my reloading process?
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