Tollys, I'm curious to find out what your results were.
I use the same bullet in my non-precision plinking ammo and like you, I could not resist the urge to crimp last year, so I set up a second seating die just to crimp on the press station after seating. My 100-yard groups went from 1.5" to 2.25" from a 20" 1:7 Colt AR with A2 sights.
Too bad, because the rounds did look really nice when crimped :-)
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