As stated above i Would recommend Mid-caps, low-caps are usually a little more expensive, But you usually fire a burst, and that spread usually makes it simulate a 5.56 hitting your target center mass, So i as well agree with the 3:1 ratio, And mid-caps keep some form of realism, I always hate when there is a newer guy on the field that has all high-caps, and hoses everything that moves, That actually happened to me today at blood money, someone got the drop on me and was about 2 feet behind me, instead of doing the optional "surrender" :roll: he hosed me with about 30 rounds to the head, so i was out of the game for a little, but at least he was shooting about 325 FPS,
Basically, Low-caps and Mid-caps are the way to go, but don't get a mix, it will only confuse you