Part of my mind is confidently telling me the greater drag (generated by the larger frontal area) and increased tendency to deform generally produces a more open pattern with larger shot, but I could have it totally flipped. Should have written all this down when I was younger, right?
All things being equal John, larger shot (especially higher antimony) will deform less upon setback as there is less surface area exposed on pellet to pellet contact. Keep in mind that higher antimony 8.5 and 9's do not benefit from the higher antimony content as do larger pellets. In my humble opinion, 7.5's are the perfect all around shot size.
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Wag more- Bark less.
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