Back on subject, I've been using 69grain TMK and 25.9 gr of Varget, making about 3125 FPS, Win Brass, CCI BR-4 or CCI-400 and holding 1/3 moa out to 200 yds (so far). Next test will be 300 yds, then off to the 1000 yd range.

The TMK's shoot much flatter than the SMK, in my experience, but I've shot the SMK's out to 750 yds and found them to be very accurate.