I bought a newRemington LH 700 VSF in 22-250. I am going to rebarrel it to a 1in8 twist for the 75 grain V-Max. I want to be able to see impact's, but I prefer not to put a brake on the rifle. Weight is not an issue. I will only shoot the rifle from a fixed position. I would also like to achieve 3300 fps. Is there a particular length and contour barrel that will allow me to achieve this?? Thanks, Tom.