Another reason for the 7x300 was I had a couple left over 8 pounders of H-1000,
that should be been perfect for the cartridge.
Priming the new Hornady brass, I was surprised how easy some of the primers seated. After the initial firing, fifteen or so never made it to round two, and that number again after round two. I have 60 some left now, still going on their 4th & 5th firings.
Shooting at 200 yards with the H-1000/183 Sierra SMK combo, 77 grains yielded a best group of .880" at 3147 fps.
Best group also, at 1.1", was with the same 77 grains and the 180 Hybrids at 3175 fps.
I went to 80 grains with both, and got the first tattoo, so felt I was OK at 77.
I loaded up a bunch of both at 77 to test seating. All loads were .020" in the lands, and I went off in .015" increments.
The Sierra didn't like getting off the lands at all.
The Berger Hybrids lived up to their reputation as not being fickle in seating preference, laying in a nice 1" group .080" off the lands, leaving plenty of room in the mag box for hunting.
So the results met what I was going for, the Sierras for play, the Bergers for fur.
Except.......
