I have a Model 11 trophy hunter in 223 as a starting point for a potential build. Can't seem to get past deciding which. My current tendency is towards the 20 vartarg. Will a heavy/ varmint baarrel be better than a light/sporter weight barrel. With such a small round, a sporter weight may adequate. Any real life feed back here. The stock on the model 11 can probably NOT be opened up to accept a heavy barrel. So it is a sigificant cost issue. Appreciate real life feed back on this. My intended use will be casual target shooting.