I would also recommend a T3 varmint.
i use a T3 Varmint HB in .243 for all my longer range target shooting, works great for me.
I wouldn't recommend the 300WM in the lite in that barrel is real skinny and heats up very fast. My brother has the T3 lam/ss in 300WM (Same as lite/SS but with a laminate stock AFAIK), 3-4 rounds and the barrel is cooking.
Tac version is a heavy barrel, (same as varmint but park'd) and includes the muzzle brake. Big price difference comes from tactical adjustable stock and pic rail.
Functionally no different as far as I know, same action and barrel, just a different finish and stock plus the brake.
If you want a Tikka long-range rig, I would sell the 300WM lite and buy a varmint in your choice of caliber.
Tacticals are $1700-$1800, whereas the varmint can be had for $1050. Depends if you want the stock and brake.
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