"But, I wanted 220 gr or better in a true hunting bullet which the SMK is not. "
uh...oh...hornets nest underfoot...
The higher sectional density SMK's per caliber have done pretty well for hunting. I had a couple of 240's out of a 10 twist 300 RUM do great on elk at 450yds this year. They are not meant to put into a bull elk shoulder joint at 40 yards. Every bullet design has compromises. NAB's and virtually every other bullet have at least some stories of 'failures'. ...gotta use them as intended per design.
Richard Graves' Wildcat Bullets has produced some ULD RBBT's up to 290g. He's in the process of producing some Aluminum tipped bullets that provide hi BC, but reportedly reliable expansion at the same time. Wildcat Bullets Home
(Did I get that right, guys?)
Edit ad: 290gr. .308 wc uld rbbt pictures from hiking & backpacking photos on webshots
Richard is reportedly having some trouble getting all his operation up and running due to the trying to get the Al tip fit different jacket thicknesses perfectly, etc., but I think the consensus is that he'll get it all figured out here and should be producing, at some point, a high BC reliably expanding bullet. 10 twist in .308 may be too slow for his long bullets, however. Good luck.
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