Like the title says I am ordering a new barrel and have it narrowed down to .223 It will be a prefit savage and will be 8 twist varmit contour. This rifle will shoot 75gr-80gr weights at distances up to 1000y off a bench or bipod and wont be mag fed. Now the things I haven't decided on are length, 26", 28", 30"? And what chamber is best suited to the longer bullets. I was thinking of going with the wylde chamber as it will have a longer throat and I could get better use of case volume. Any thoughts?