What is a better barrel for a sniper and whats a better length?

[sniper737]

What lenght sould i get for a barrel i like to snipe and i play in the woods and im between the 32degrees sniper barrel,and a terminator would should i get and lenght?

[BOBO2]

First of the sniper olny comes in 16, and in all barrels any thing over 12 to 14 is pointless.