Getting my son a Tikka T3x CTR rifle with a 1:11 twist, 20" barrel, etc. I reload a ton but not for this caliber. Picked him up some Laupa brass and ELD bullets in 150 grain, ELD-X 173, and Sierra Tipped Match King bullets in 168. I'd appreciate powders and load suggestions for accuracy, etc. I'm partial to Varget but not sure how that would do in a .308 Win. Thanks in advance.