My plan is to hit the range this weekend and I will let you know how my t3 7mm and burris c4 scope works. I think I can do 400 yds there so I should be able to test it's leggs a little.
And one other thing , all Tikkas come with clips. Clips that are easily lost. Hinged floor plate might come open but you should have some extra ammo anyway. Clips also are known to rattle sometimes also but I don't know if tikkas development this problem ever but..., blind mag will save weight and trouble for a mountain rifle.
I'd take gramp's rifle, put a Hart, Lilja, Rock or Pacnor barrel on it, have it bedded, buy a Leupold CDS scope and roll. Since you may not handload, I'd go 30-06, 270, or 280 and in that order. The barrel and smith work should set you back about $600 total. I'm old and sentimental though.