what the differrence between my old Tactical and the new models

i have owned a Savage Tactical in 308 for many years. I did not shoot it much in the past, preferring semis as ammo was cheap back then.

Now we all know where 308 in at, and I have decided to delve into the long range rifle game.

My gun is pre accu trigger and has tactical on the bolt. I was at the gun shop and i saw a new Savage tatical style rifle with a 18" and it was cool.

So what is the difference between my model and the new ones? I was thinking if the difference is enough, i might sell the Tactical to fund the new one.

Thanks for any replies

Most likely length of barrel ( longer better) yours internal or external magazine many other