Before changing anything, you should invest in a fire lapping kit. IME, you can bring back barrels that look pretty bad to acceptable hunting accuracy. In a 99 308 that's 2" @100 which will kill any big game just fine (remember a 2" group is only 1" off your POA)
I had an Israel 98 in 308 that had a black hole bore.
Fired lapped the pizz out of it, so much that .311 bullets were needed. Slapped a cheap scout scope on it and the nasty old thing held 1.5" for 3 shots @100.
Bore looked far better than any of the current rebore sellers (now that LaBounty does not)
358s in a 99 hurt, 338 is a better balanced cartridge (see current Guns and Ammo)
Good shooting !
