Re: noveske 20"
I don't have experience but from talking to others about it on another forum I have heard they are very accurate but VERY heavy.
I think once you get above a 16" barrel the barrels are thicker, almost like a bull barrel but not quite. Unless you just plan on wanting to shoot 900 or 1,000 alot I say go with the 16". It will do everything the 20" can do just less velocity, but still reach out to 600-800 yards.