Lookin for a better scope for my 50 bmg barrett m99 itt currently has the factory kit scope on it which is a bushnell 3200 elite 10x I would like to reach out farther and the 1in tube doesnt have nearly the travle I need to punch out to 2000 yds scopes i have in mind are the leo mark 4 or the night force nxs. I am fairly new to extreme long range shooting and am stuck between these scope opptions and weather to get them in mills or moa. Help me out with any opinions and experience you have with these.