What do i consider in an tactical rifle/situational set up?

first is utility how useful and easy to ,use then size ie.,length. decent caliber whether i am in an wooded area where there are a lot of dense brush and foliage, or an urban built up area i would choose the calibers suited for the enviorment i am in and will be fighting and defending in. Say i am forced to go into an wooded area or forrest i personal would choose no lower then an 6.8 spc ,for this reason i choose these higher calibers because anything lower usually gets knocked off the line of point of impact or just ricochet in an another direction and use ,use a whole lot of extra ammo to get at what ever you will engage! i prefer an heavy caliber for wooded area ,where as the bullet is heavy enough to shoot though most brush and still strike your target on the other side and still carry enough energy to deliver to your adversary an killing hit ! Remember more then 3 shots in an Forrest will echo a great distance and give more an direction for tracking by you opponent's if you can tell you will not be able to fire less than 2 rounds to defeat your threat disengage leave it alone and egress break contact get as far way as possible. to be continued........