Two range sessions. So far I'm enjoying the rifle.

1st Range Session

Lapua Brass
CCI200 Primer
Sierra 69 grain Matchking
IMR4350
Powder charge / Group Size (4 shots)
34.6 / .77
34.9 / .76
35.2 / .65
35.7 / .38
36.2 / .93

2nd Range Session

Lapua Brass (once fired & neck sized with Lee Collet Die)
CCI200 Primer
Sierra 69 grain Matchking
IMR4350
Powder charge / 4 shot group size / avg speed
35.4 / .33 / 2969
35.7 / .75 / 3032
36 / .55 / no readings

Lapua Brass (once fired & neck sized with Lee Collet Die)
CCI200 Primer
Barnes 62 grain TTSX
IMR4064
Powder charge / 4 shot group size / avg speed
33.5 / .98 / 3359
34 / .55 / 3395
34.5 / .21 / 3420
35 / .74 / no readings

Tried the Barnes TTSX with Varget. Results were poor in my rifle. Group sizes were 1 - 1.7".