Yeah, the Frontier projectiles. I've run them with 26 grains of 2206H through my NEA 14.5" 1/7 with no separation. I guess the polygonal rifling in the NEA doesn't damage the jacket during engraving as much as conventional rifling.Are these the Frontier projectiles? If so I have trialled over 26grs of 2206h behind them while working up a load and have had no problems at all.
Cannot think what would be causing that.
I use a Stag with a 20" barrel, 1 in 9,so perhaps that is the difference?
Is this through a 1/7?haven't chrono'd mine yet but they shoot fine at much lower loads than I usually load to
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