None yet. I've just barely started working with that bullet. I got 2" groups with it in my Hornet rifle, compared to its usual 0.6". I plan to try a bit faster powder than LilGun, and 4227 is on my list. First up is H110, which works extremely well with Calhoon 37-grainers, which is another long-for-weight bullet.
My usual Calhoon load is WW brass, FL sized, Rem 6 1/2 primer, 11.0 H110 (easy to remember, huh?) and a medium Lee Factory Crimp. It gets 3100 fps.
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